CN113831492B - Preparation method of polyurethane elastomer for steel rail energy consumption piece, polyurethane elastomer and energy consumption piece - Google Patents
Preparation method of polyurethane elastomer for steel rail energy consumption piece, polyurethane elastomer and energy consumption piece Download PDFInfo
- Publication number
- CN113831492B CN113831492B CN202111101045.4A CN202111101045A CN113831492B CN 113831492 B CN113831492 B CN 113831492B CN 202111101045 A CN202111101045 A CN 202111101045A CN 113831492 B CN113831492 B CN 113831492B
- Authority
- CN
- China
- Prior art keywords
- component
- polyurethane elastomer
- weight
- parts
- polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229920003225 polyurethane elastomer Polymers 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 title abstract description 21
- 239000010959 steel Substances 0.000 title abstract description 21
- 238000005265 energy consumption Methods 0.000 title abstract description 19
- 229920005862 polyol Polymers 0.000 claims abstract description 31
- 150000003077 polyols Chemical class 0.000 claims abstract description 29
- 239000000945 filler Substances 0.000 claims abstract description 24
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 21
- 229920000570 polyether Polymers 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims abstract description 12
- 239000004970 Chain extender Substances 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 6
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000003054 catalyst Substances 0.000 claims description 9
- 239000003963 antioxidant agent Substances 0.000 claims description 6
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- IBOFVQJTBBUKMU-UHFFFAOYSA-N 4,4'-methylene-bis-(2-chloroaniline) Chemical group C1=C(Cl)C(N)=CC=C1CC1=CC=C(N)C(Cl)=C1 IBOFVQJTBBUKMU-UHFFFAOYSA-N 0.000 claims description 5
- 241001112258 Moca Species 0.000 claims description 5
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000454 talc Substances 0.000 claims description 3
- 229910052623 talc Inorganic materials 0.000 claims description 3
- 235000012222 talc Nutrition 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000013016 damping Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 15
- 229920002635 polyurethane Polymers 0.000 description 13
- 239000004814 polyurethane Substances 0.000 description 13
- 230000009467 reduction Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 3
- -1 polyol compound Chemical class 0.000 description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229920005906 polyester polyol Polymers 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012258 stirred mixture Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 238000002076 thermal analysis method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3472—Five-membered rings
- C08K5/3475—Five-membered rings condensed with carbocyclic rings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention provides a preparation method of a polyurethane elastomer for a steel rail energy consumption piece, the polyurethane elastomer and the energy consumption piece, wherein the method comprises the following steps: preparing a component A, which comprises reacting 20-30 parts by weight of MDI-50 with 80-90 parts by weight of polyether polyol to form polyurethane prepolymer; preparing a component B, namely uniformly mixing 130-160 parts by weight of polyether polyol, 90-120 parts by weight of first filler, 0.5-1.2 parts by weight of chain extender and a proper amount of additive together, and then dehydrating in vacuum at 100-120 ℃ until the water content is less than 0.05%, so as to obtain the component B; and adding the component B into the component A heated to 40-50 ℃, uniformly stirring, and vulcanizing for several days at 20-60 ℃ to obtain the polyurethane elastomer.
Description
Technical Field
The invention relates to the technical field of vibration control, in particular to a preparation method of a polyurethane elastomer for a steel rail energy consumption piece, the polyurethane elastomer prepared by the method and the energy consumption piece prepared by the polyurethane elastomer.
Background
Along with the vigorous development of rail transit in China, people work and travel more conveniently and rapidly, but vibration and noise of the rail transit not only affect normal life of residents along the line, but also possibly cause fatigue damage of related rail equipment, and the service life of the rail transit is directly shortened. At present, vibration and noise reduction measures for rail transit in China are various, and the steel rail damper can be conveniently and rapidly installed on a newly built or running line, has good vibration and noise reduction effects and is widely and widely applied.
At present, the steel rail damper products are various, and the types of the steel rail damper products can be classified into constraint damping type, labyrinth damping type and dynamic vibration absorber type. The constraint damping type and labyrinth damping type steel rail dampers mainly consume the vibration energy of the steel rail through the internal friction and mutual dislocation of damping materials. The active frequency is higher, and the noise reduction effect is achieved to a certain extent. The dynamic vibration absorbing steel rail damper has certain vibration absorbing effect in certain frequency through adding spring-mass system to the track system. There is a lack of a product on the market which has a vibration damping effect and also has excellent noise reduction performance.
Accordingly, new techniques and methods are needed to at least partially address the problems existing in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a preparation method of a polyurethane elastomer for a steel rail energy consumption piece, the polyurethane elastomer prepared by the method and the energy consumption piece prepared by the polyurethane elastomer, wherein the energy consumption piece can increase the damping characteristic of an original track system, greatly improve the damping rate (dB/m) of steel rail vibration, accelerate the damping of vibration waves transmitted in the steel rail, and reduce the average level of the steel rail vibration. Elastomer
According to an aspect of the present invention, there is provided a method for preparing a polyurethane elastomer for a rail energy consumption member, comprising:
preparing a component A, which comprises reacting 20-30 parts by weight of MDI-50 with 80-90 parts by weight of polyether polyol to form polyurethane prepolymer;
preparing a component B, namely uniformly mixing 130-160 parts by weight of polyether polyol, 90-120 parts by weight of first filler, 0.5-1.2 parts by weight of chain extender and a proper amount of additive together, and then dehydrating in vacuum at 100-120 ℃ until the water content is less than 0.05%, so as to obtain the component B; and
and adding the component B into the component A heated to 40-50 ℃, uniformly stirring, and vulcanizing for several days at 20-60 ℃ to obtain the polyurethane elastomer.
According to an embodiment of the invention, wherein the step of forming a polyurethane prepolymer comprises: vacuum dehydrating polyether polyol at 100-120 ℃ until the moisture content is less than 0.05%, cooling to 30-50 ℃, stirring, adding MDI-50, heating the mixture to 75-85 ℃, reacting for several hours, sampling and detecting NCO%, and defoaming and cooling when the NCO% is 10-20%, thus obtaining the polyurethane prepolymer.
According to an embodiment of the invention, wherein in the step of preparing component B, the first filler is selected from graphite, barium sulfate, talc, mica powder, carbon fiber and glass fiber, and the additive is selected from antioxidants, ultraviolet absorbers and catalysts.
According to an embodiment of the invention, wherein the chain extender is MOCA and the catalyst is dibutyltin dilaurate.
According to an embodiment of the invention, wherein the filler further comprises carbon black as a second filler, the first filler is talc.
According to an embodiment of the present invention, wherein in the step of preparing the a-component, the polyether polyol is a polyoxyethylene ether polyol having a functionality of 2 to 3 and a molecular weight of 1000 to 2000; in the step of preparing the component B, the polyether polyol is a polyether polyol with a functionality of 2-3 and a molecular weight of 1000-5000.
According to an embodiment of the invention, the isocyanate index ratio of component A to component B is in the range of 1.05 to 1.10, i.e.OH of the NCO/B component of component A.
According to an embodiment of the invention, wherein the step of vulcanizing at 20-60 ℃ for several days comprises: the stirred mixture of component A and component B is injected into a mold, vulcanized for 3-4 hours at 20-60 ℃, demolded, and then vulcanized for about one week at room temperature.
According to another aspect of the present invention there is provided a polyurethane elastomer prepared by the process according to the present invention.
According to a further aspect of the invention there is provided a rail consumer made from the polyurethane elastomer according to the invention.
The polyurethane elastomer for the steel rail energy consumption piece and the preparation method thereof have the advantages that:
1. the novel polyurethane material considers the service environment of the steel rail energy consumption device, is designed in the aspects of ultraviolet resistance and oxidation resistance, and can prolong the service life of the steel rail energy consumption device.
2. The novel polyurethane material formula ensures that the curing and forming time of the polyurethane material is accelerated by designing the prepolymer, and improves the production efficiency of the steel rail energy consumption device.
3. An important index for evaluating the vibration and noise reduction performance of polyurethane is that the polyurethane material has a high damping factor (loss factor) in the glass transition region. According to the performance requirements of the steel rail energy consumption device, the novel polyurethane material loss factor is improved through formula design, sample manufacturing, material testing, formula optimizing and the like, and the high loss factor can enable the polyurethane material to have good energy storage and energy consumption performance, so that the vibration reduction and noise reduction performance of the steel rail energy consumption device is improved.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The objects and features of the present invention will become more apparent in view of the following description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a photograph of a polyurethane elastomer prepared according to an embodiment of the present invention; and
FIG. 2 is a photograph of a polyurethane elastomer test specimen according to an embodiment of the present invention.
Detailed Description
The following detailed description of the invention is, therefore, not to be taken in a limiting sense, and is set forth in the appended drawings.
The main raw materials for producing polyurethane are isocyanate, polyol compound and various chemical auxiliary agents such as filler. The isocyanate is a compound having an-NCO group, mainly Toluene Diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene Diisocyanate (HDI), isophorone diisocyanate (IPDI), dicyclohexylmethane diisocyanate (HMDI), 1, 5-Naphthalene Diisocyanate (NDI) and the like. Of these, MDI and TDI are the most common and most commonly used two. Due to the different molecular structures, the main uses of MDI and TDI are also different. TDI is mainly applied to the fields of soft foam, elastomer (especially pouring elastomer), paint and the like. MDI has a much lower vapor pressure than TDI, is less volatile and has low toxicity. Pure MDI is a solid at normal temperature and is not easy to handle, while MDI-50 is a mixture of 2,4'-MDI and 4,4' -MDI, which has a low freezing point and is a colorless to yellowish transparent liquid at normal temperature. In the present invention, MDI-50 is selected as the component a from the viewpoints of environmental protection, cost, operation process, etc.
Polyol is short for polyfunctional alcohols, is one of important raw materials for synthesizing polyurethane resin, and the types, molecular weights, functionalities and molecular structures of polyol compounds are different, so that the physical and chemical properties of the prepared polyurethane resin are greatly different. Polyols used in the polyurethane industry are mainly of two general types: polyether polyols and polyester polyols. The polyether polyol is prepared by ring-opening polymerization of low molecular weight polyol, polyamine or active hydrogen compound serving as an initiator and alkylene oxide under the action of a catalyst. Compared with polyether polyol, the polyester polyol has poorer hydrolysis resistance and mould resistance, and the polyether polyol is selected as a main raw material of the component B in consideration of the application environment of the vibration damping block. More specifically, polyether polyols having a functionality of 2 to 3 and a molecular weight of 1000 to 5000 are preferred; preferably a polyoxyethylene ether polyol having a functionality of 2-3 and a molecular weight of 1000-2000.
The filler is added into polyurethane to limit the free movement of molecular chains, increase the strain and energy loss of the material, increase the relative hysteresis between stress and strain, reduce the cross-linking points between molecular chains due to the interaction between filler particles and the molecular chains, and show microporous distribution in a continuous phase from a microstructure similar to a porous material, thereby being beneficial to the formation of microphase separation and further improving the damping performance and the elastic modulus of the material. The common fillers of the polyurethane damping material are graphite, carbon black, barium sulfate, talcum powder, mica powder, carbon fiber, glass fiber and the like. The preferential trend of the flaky filler under the shearing action increases the internal friction between the polymer molecular chain and the flaky filler, thereby improving the damping performance. On the premise of ensuring that the strength of the material meets the requirement, the more the filler content is, the better the damping vibration attenuation effect is; however, the higher the content, the higher the viscosity of the component, which is unfavorable for the uniform mixing of the filler, and also affects the performance of the material. For large damping products, it is a very critical issue how to uniformly disperse the filler into the raw material to form a stable system. In addition, the filler can greatly reduce the cost of the product. The talcum powder is low in sheet price, good in impact resistance and low in hardness, and can be selected as a main filler in consideration of polyurethane performance, process and cost control and requirements of the vibration reduction block on polyurethane hardness, density, strength and the like, and the content of the talcum powder is controlled to be about 30%. In addition, carbon black may be selected as the second filler to improve the properties of the elastomer.
Other chemical auxiliaries (additives) may be selected, for example, from chain extenders, antioxidants, ultraviolet absorbers, catalysts, and the like. For example, the chain extender may be MOCA, the catalyst may be dibutyl tin dilaurate, the ultraviolet absorber may be benzophenone type or benzotriazole type ultraviolet absorber, and the antioxidant may be phenol type antioxidant or aromatic amine type antioxidant. The skilled person can choose the appropriate chemical auxiliary based on the teachings of the present invention and the general knowledge in the art.
The invention will be further illustrated with reference to specific examples
Example 1 preparation of polyurethane elastomer
82 parts by weight of a polyoxyethylene ether polyol (functionality 2-3, average molecular weight 1000-2000) are dehydrated in vacuo at 100℃to a moisture of <0.05%. Then cooled to 35 ℃, stirred and 28 parts by weight of MDI-50 was added. The temperature is raised to 80 ℃ and the reaction is carried out for 2 hours, and the NCO% is 12.0% by sampling and detecting NCO%. Then defoaming and cooling to obtain polyurethane prepolymer (component A);
140 parts by weight of polyether polyol (functionality 2-3, average molecular weight 1500), 0.3 part by weight of catalyst dibutyltin dilaurate, 0.7 part by weight of chain extender MOCA, 100 parts by weight of talcum powder (filler), 0.4 part by weight of antioxidant 1010, 0.4 part by weight of ultraviolet absorber 328 and 0.5 part by weight of carbon black are stirred uniformly in a reaction kettle, dehydrated in vacuum at 100 ℃ until the moisture is less than 0.05%, and cooled to room temperature to obtain component B.
The polyurethane prepolymer of the component A is heated to 40 ℃, the component B is rapidly added, the mixture is rapidly stirred uniformly and injected into a die, vulcanized for 3.5 hours at 30 ℃, demolded, and vulcanized for one week at room temperature, thus obtaining the polyurethane elastomer damping material (see three samples on the left side in the attached figure 1).
Example 2 preparation of polyurethane elastomer
87 parts by weight of a polyoxyethylene ether polyol (functionality 2-3, average molecular weight 1000-2000) are dehydrated in vacuo at 110℃to a moisture of <0.05%. Then cooled to 40 ℃, stirred and 24 parts by weight of MDI-50 was added. The temperature is raised to 80 ℃ and the reaction is carried out for 2.5 hours, and the NCO% is 16.0% by sampling and detecting NCO%. Then defoaming and cooling to obtain polyurethane prepolymer (component A);
150 parts by weight of polyether polyol (functionality 2-3, average molecular weight 4000), 0.7 part by weight of catalyst dibutyltin dilaurate, 0.9 part by weight of chain extender MOCA, 110 parts by weight of talcum powder (filler), 0.7 part by weight of antioxidant 1010, 0.8 part by weight of ultraviolet absorber 328 and 0.7 part by weight of carbon black are stirred uniformly in a reaction kettle, dehydrated in vacuum at 100 ℃ until the moisture is less than 0.05%, and cooled to room temperature to obtain component B.
The polyurethane prepolymer of the component A is heated to 50 ℃, the component B is rapidly added, the mixture is rapidly stirred uniformly and injected into a die, the die is vulcanized for 3 hours at 50 ℃, the die is removed, and then the die is vulcanized for one week at room temperature, so that the polyurethane elastomer damping material is obtained (see three samples on the right side in the attached figure 1).
Example 3 Performance test of polyurethane elastomer
Test specimens (see fig. 2) were prepared using standard cutting tools according to the corresponding test standards, and the materials were tested for hardness, density, tensile properties and loss factor (DMA thermal analysis) according to the test standards. The test results are shown in Table 1.
Table 1: test results
Experimental results show that the product of the invention completely meets the requirements of related standards; the performance of the energy-saving and energy-consuming device is obviously better than that of the prior art (generally 0.2-0.4) in terms of the loss factor, so that the energy-saving and energy-consuming device has good energy-saving and energy-consuming performance, and further the vibration and noise reduction performance of the energy-consuming device of the steel rail can be improved.
Although the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above, and any person skilled in the art can make some changes or modifications by using the technical contents disclosed above without departing from the spirit of the present invention, which falls within the protection of the present invention.
Claims (8)
1. A method for preparing a polyurethane elastomer for rail energy consuming parts, comprising the steps of:
preparing a component A, which comprises reacting 20-30 parts by weight of MDI-50 with 80-90 parts by weight of polyether polyol to form polyurethane prepolymer, wherein NCO% of the polyurethane prepolymer is 10-20%;
preparing a component B, namely uniformly mixing 130-160 parts by weight of polyether polyol, 90-120 parts by weight of first filler, 0.5-1.2 parts by weight of chain extender and a proper amount of additive together, and then dehydrating in vacuum at 100-120 ℃ until the water content is less than 0.05%, so as to obtain the component B; and
adding the component B into the component A heated to 40-50 ℃, uniformly stirring, injecting into an injection mold, vulcanizing for 3-4 hours at 20-60 ℃, demolding, and vulcanizing for one week at room temperature to obtain a polyurethane elastomer;
wherein, in the step of preparing the component A, the polyether polyol is polyoxyethylene ether polyol with the functionality of 2-3 and the molecular weight of 1000-2000; in the step of preparing the component B, the polyether polyol is a polyether polyol with a functionality of 2-3 and a molecular weight of 1000-5000;
wherein the first filler is selected from graphite, barium sulfate, talcum powder, mica powder, carbon fiber and glass fiber.
2. The method of producing a polyurethane elastomer for rail energy consuming parts of claim 1, wherein the step of forming a polyurethane prepolymer comprises: vacuum dehydrating polyether polyol at 100-120 ℃ until the moisture content is less than 0.05%, cooling to 30-50 ℃, stirring, adding MDI-50, heating the mixture to 75-85 ℃, reacting for several hours, sampling and detecting NCO%, and defoaming and cooling when the NCO% is 10-20%, thus obtaining the polyurethane prepolymer.
3. The method for producing a polyurethane elastomer for rail energy consuming parts according to claim 1, wherein in the step of producing component B, the additive is selected from the group consisting of antioxidants, ultraviolet absorbers and catalysts.
4. A process for the preparation of a polyurethane elastomer for rail energy consuming parts according to claim 3, characterized in that the chain extender is MOCA and the catalyst is dibutyltin dilaurate.
5. The method of producing a polyurethane elastomer for rail energy consuming members of claim 2, further comprising carbon black as a second filler and the first filler is talc.
6. The process for the preparation of polyurethane elastomers for rail energy consuming components as claimed in claim 1, wherein the isocyanate index ratio of component a to component B is 1.05 to 1.10.
7. Polyurethane elastomer, characterized in that it is prepared by a process according to any one of claims 1 to 6.
8. A rail energy consumer made from the polyurethane elastomer of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111101045.4A CN113831492B (en) | 2021-09-18 | 2021-09-18 | Preparation method of polyurethane elastomer for steel rail energy consumption piece, polyurethane elastomer and energy consumption piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111101045.4A CN113831492B (en) | 2021-09-18 | 2021-09-18 | Preparation method of polyurethane elastomer for steel rail energy consumption piece, polyurethane elastomer and energy consumption piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113831492A CN113831492A (en) | 2021-12-24 |
| CN113831492B true CN113831492B (en) | 2024-01-26 |
Family
ID=78960014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111101045.4A Active CN113831492B (en) | 2021-09-18 | 2021-09-18 | Preparation method of polyurethane elastomer for steel rail energy consumption piece, polyurethane elastomer and energy consumption piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113831492B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353414A (en) * | 2008-08-08 | 2009-01-28 | 山东东大一诺威聚氨酯有限公司 | Rapid mold stripping urethane elastomer compoistion and use method thereof |
| CN101633719A (en) * | 2009-08-27 | 2010-01-27 | 黎明化工研究院 | Normal-temperature solidification polyurethane elastomer waterproof material and preparation method thereof |
| CN106866924A (en) * | 2017-02-18 | 2017-06-20 | 青岛科技大学 | Shock insulation polyurethane elastomer material composition and preparation method thereof |
| CN107686550A (en) * | 2017-07-20 | 2018-02-13 | 青岛科技大学 | One kind is without plasticizer, soft, high elongation rate of tensile failure polyurethane elastomer material composition and preparation method thereof |
| CN109824847A (en) * | 2017-11-23 | 2019-05-31 | 北京市建筑工程研究院有限责任公司 | A kind of polyurethane-urea vibration reduction and cushioning flexibility damping material and preparation method thereof |
| CN110903457A (en) * | 2019-12-12 | 2020-03-24 | 山东一诺威聚氨酯股份有限公司 | Polyurethane elastomer for manufacturing rapid demoulding high-temperature-resistant transparent model material and preparation method thereof |
| CN111454567A (en) * | 2020-04-16 | 2020-07-28 | 航锦科技股份有限公司 | Preparation method for producing polyurethane imitation marble decorative material by using industrial saponified waste residue |
-
2021
- 2021-09-18 CN CN202111101045.4A patent/CN113831492B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353414A (en) * | 2008-08-08 | 2009-01-28 | 山东东大一诺威聚氨酯有限公司 | Rapid mold stripping urethane elastomer compoistion and use method thereof |
| CN101633719A (en) * | 2009-08-27 | 2010-01-27 | 黎明化工研究院 | Normal-temperature solidification polyurethane elastomer waterproof material and preparation method thereof |
| CN106866924A (en) * | 2017-02-18 | 2017-06-20 | 青岛科技大学 | Shock insulation polyurethane elastomer material composition and preparation method thereof |
| CN107686550A (en) * | 2017-07-20 | 2018-02-13 | 青岛科技大学 | One kind is without plasticizer, soft, high elongation rate of tensile failure polyurethane elastomer material composition and preparation method thereof |
| CN109824847A (en) * | 2017-11-23 | 2019-05-31 | 北京市建筑工程研究院有限责任公司 | A kind of polyurethane-urea vibration reduction and cushioning flexibility damping material and preparation method thereof |
| CN110903457A (en) * | 2019-12-12 | 2020-03-24 | 山东一诺威聚氨酯股份有限公司 | Polyurethane elastomer for manufacturing rapid demoulding high-temperature-resistant transparent model material and preparation method thereof |
| CN111454567A (en) * | 2020-04-16 | 2020-07-28 | 航锦科技股份有限公司 | Preparation method for producing polyurethane imitation marble decorative material by using industrial saponified waste residue |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113831492A (en) | 2021-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111499833B (en) | Polyurethane type self-repairing resin | |
| US4902768A (en) | Elastomers prepared from N-(polyoxyalkyl)-N-(alkyl)amines | |
| CN106866924A (en) | Shock insulation polyurethane elastomer material composition and preparation method thereof | |
| CN113105600B (en) | Silicate/isocyanate composite elastomer and preparation method thereof | |
| US5043410A (en) | Cross-linkable polyurethane rubbers containing polyoxyperfluoroalkylene blocks | |
| CN102504511A (en) | Polyurethane modified unsaturated polyester resin composition and preparation method thereof | |
| CN114316196B (en) | Hydrolysis-resistant polyurethane damping material and preparation method and application thereof | |
| CN113831492B (en) | Preparation method of polyurethane elastomer for steel rail energy consumption piece, polyurethane elastomer and energy consumption piece | |
| CN113461900B (en) | Low-static-rigidity polyurethane microporous elastic base plate with low-temperature static rigidity change rate | |
| CN113307930B (en) | Cold-resistant high-static-stiffness polyurethane microporous elastic base plate | |
| CN113307940B (en) | Low-temperature-resistant middle-static-stiffness polyurethane microporous elastic base plate | |
| CN105732937B (en) | The preparation method and application of microporous polyurethane elastomer | |
| CN111533868B (en) | Polyurethane for low-speed solid tire | |
| CN113174028A (en) | Full-water foaming polyurethane foam and preparation method and application thereof | |
| CN105294970A (en) | Bio-based thermoplastic polyurethane elastomer material and preparation method thereof | |
| CN113461905A (en) | Polycarbonate type polyurethane elastomer sealing material and preparation method and application thereof | |
| US3115481A (en) | Polyurethane collapsed foam elastomer | |
| CN114369226B (en) | Lightweight polyurethane elastomer and manufacturing method and application thereof | |
| CN113651941B (en) | Polyurethane damping material and preparation method thereof | |
| CA2327700C (en) | One-shot polyurethane elastomers with very low compression sets | |
| CN114478972A (en) | High-damping polyurethane elastomer for shock pad and preparation method thereof | |
| CN109021195B (en) | High-performance polyurethane elastomer for table tennis ball preparation and preparation method thereof | |
| CN113549193A (en) | WJ-8A type high-speed rail elastic base plate with low-temperature static rigidity change rate | |
| CN115677960B (en) | Elastic backing plate under railway track and preparation method thereof | |
| CN112521572A (en) | Polyurethane foamable composition, polyurethane foam, and method for producing same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ding Deyun Inventor after: Li Chao Inventor after: Sun Fangqiu Inventor after: Yan Yuzhi Inventor after: Hao Chenxing Inventor before: Ding Deyun Inventor before: Li Chao Inventor before: Sun Fangzun Inventor before: Yan Yuzhi Inventor before: Hao Chenxing |