CN116041850A - Foamed polypropylene floor and preparation method thereof - Google Patents
Foamed polypropylene floor and preparation method thereof Download PDFInfo
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- CN116041850A CN116041850A CN202211711610.3A CN202211711610A CN116041850A CN 116041850 A CN116041850 A CN 116041850A CN 202211711610 A CN202211711610 A CN 202211711610A CN 116041850 A CN116041850 A CN 116041850A
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- 239000004743 Polypropylene Substances 0.000 title claims abstract description 68
- -1 polypropylene Polymers 0.000 title claims abstract description 35
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 238000005187 foaming Methods 0.000 claims abstract description 46
- 239000004088 foaming agent Substances 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 229920006124 polyolefin elastomer Polymers 0.000 claims abstract description 22
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 18
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 18
- 239000012763 reinforcing filler Substances 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 17
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 13
- 239000004611 light stabiliser Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- 238000007493 shaping process Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000005496 tempering Methods 0.000 claims abstract description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 30
- 239000010410 layer Substances 0.000 claims description 25
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 20
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 15
- 239000004156 Azodicarbonamide Substances 0.000 claims description 10
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 10
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 229920002554 vinyl polymer Polymers 0.000 claims description 10
- 239000002344 surface layer Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 239000011787 zinc oxide Substances 0.000 claims description 5
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 4
- 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 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical group OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000009408 flooring Methods 0.000 claims 5
- 239000000463 material Substances 0.000 abstract description 10
- 238000009826 distribution Methods 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- ODSKLSHYNORHDI-UHFFFAOYSA-N C(CC)(=O)OC1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.OCC(CO)(CO)CO Chemical compound C(CC)(=O)OC1=CC(=C(C(=C1)C(C)(C)C)O)C(C)(C)C.OCC(CO)(CO)CO ODSKLSHYNORHDI-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
Images
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/18—Binary blends of expanding agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Emergency Medicine (AREA)
- Inorganic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a foaming polypropylene floor and a preparation method thereof, which relate to the technical field of plastic foaming and compounding, and the preparation method comprises the following steps: blending and granulating 20-80 parts of branched high melt and 10-30 parts of POE (polyolefin elastomer) by a high-speed mixer and a double-screw extruder to obtain blending modified particles; taking the prepared blending modified particles as a resin matrix, respectively mixing with 20-80 parts of reinforcing filler, 0.1-0.5 part of light stabilizer, 0.5-5 parts of antioxidant and 2-8 parts of MAH-g-PP, and preparing the required mixed particles again by a double screw extruder; mixing the mixed particles with 0.5-2 parts of foaming agent and 0.5-2 parts of foaming auxiliary agent; then heating and extruding through a single screw extrusion foaming experimental device; extruding and shaping the formed sheet by a calender; and carrying out surface UV tempering treatment on the shaped sheet to obtain a substrate layer. The method ensures that the foamed polypropylene has fine and uniform pore forming and narrow diameter distribution, enhances the interfacial compatibility of the filler and the polypropylene resin, and effectively improves the mechanical property of the micro-foamed polypropylene material.
Description
Technical Field
The invention relates to the technical field of plastic foaming composite, in particular to a foaming polypropylene floor and a preparation method thereof.
Background
The micro-foaming material has the characteristics of excellent shock resistance and energy absorption performance, rebound resilience, high temperature resistance, chemical resistance, oil resistance, heat insulation and the like, and the application in the field of floor construction is rapidly growing. The PP has the characteristics that the PP can prepare materials with various excellent performances, but at the same time, the pure PP has lower melt strength and weaker strain hardening behavior due to the linear structure and crystalline phase of internal molecules, so that the foaming performance is lower, the produced materials are poorer in performance, the uniformity of cells is poorer, the diameter of the cells is larger, the toughness is poorer, and the low-temperature resistance is obviously insufficient, thereby restricting the application of the foaming materials in a plurality of fields.
The PP resin is used as a crystalline polymer, and can be quickly converted from a solid state to a viscous state when the temperature is raised to a melting point, the melt viscosity is rapidly reduced, and the temperature range suitable for foaming is narrow. In addition, the larger specific heat capacity of the PP resin leads to a great deal of crystallization heat to be released when the PP resin is solidified, and the cooling and shaping time is longer, which increases the molding difficulty of the PP micro-foaming product, and provides the foaming polypropylene floor and the preparation method thereof aiming at the problems of low melt strength and poor foaming performance of the polypropylene.
Disclosure of Invention
The present application is directed to a foamed polypropylene floor and a method for preparing the same, which solve the problems set forth in the background art.
In order to achieve the above purpose, the present application provides the following technical solutions: the foamed polypropylene floor comprises a substrate layer and a decorative surface layer arranged on the substrate layer, wherein the substrate layer comprises the following raw material components in parts by weight:
20-80 parts of branched high-melt PP;
10-30 parts of POE;
20-80 parts of reinforcing filler;
0.1-0.5 part of light stabilizer;
0.5-5 parts of antioxidant;
2-8 parts of MAH-g-PP;
0.5-2 parts of foaming agent;
0.5-2 parts of foaming auxiliary agent.
Preferably, the reinforcing filler comprises calcium carbonate and talc, and the calcium carbonate is light calcium carbonate.
Preferably, the antioxidant is pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
Preferably, the foaming agent comprises azodicarbonamide and a composite foaming agent, and the composite foaming agent comprises polyvinyl sodium bicarbonate foaming master batch EF405.
Preferably, the polyvinyl sodium bicarbonate foaming master batch EF405: azodicarbonamide=100: 1 to 5.
Preferably, the foaming aid comprises zinc oxide.
The preparation method of the foamed polypropylene floor comprises the following steps:
s1, blending and granulating 20-80 parts of branched high melt and 10-30 parts of POE (polyolefin elastomer) by a high-speed mixer and a double-screw extruder to obtain blending modified particles;
s2, taking the prepared blending modified particles as a resin matrix, respectively mixing with 20-80 parts of reinforcing filler, 0.1-0.5 part of light stabilizer, 0.5-5 parts of antioxidant and 2-8 parts of MAH-g-PP, and preparing the required mixed particles again by a double screw extruder;
s3, mixing the mixed particles with 0.5-2 parts of foaming agent and 0.5-2 parts of foaming auxiliary agent;
s4, heating and extruding through a single screw extrusion foaming experimental device;
s5, extruding and shaping the formed sheet through a calender;
s6, carrying out surface UV tempering treatment on the shaped sheet, firstly putting hot water with the temperature of 80 ℃, and then putting cold water with the temperature of 25 ℃ to obtain a substrate layer;
s7, carrying out slitting, slotting and packaging operations after hot-pressing the substrate layer and the decorative surface layer.
In summary, the invention has the technical effects and advantages that:
1. in the invention, means such as blending and grafting are adopted to widen the foaming temperature range of the resin, improve the molecular weight of the PP, widen the molecular weight distribution, introduce long-chain branched structures and the like, so as to achieve the purposes of improving the viscoelasticity of PP melt and improving the melt strength of the PP, and realize the microporation of the cell structure inside the product.
2. According to the invention, the amorphous polymers are respectively added into the PP raw materials by means of melt blending, so that the viscosity of the material can be effectively improved, the influence of processing temperature fluctuation on the viscosity of the material is reduced, and the microporation of the polypropylene foaming material is improved; and silver grains are formed in the sample, so that a large amount of impact energy is absorbed and the impact strength of the sample is remarkably improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for producing a foamed polypropylene floor in the present example;
FIG. 2 is a table of the experimental formulation of the foamed polypropylene floor in this example;
fig. 3 is a table showing the molding process parameters of the foamed polypropylene floor in this example.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: the foamed polypropylene floor comprises a substrate layer and a decorative surface layer arranged on the substrate layer, wherein the substrate layer comprises the following raw material components in parts by weight with reference to fig. 2:
40 parts of branched high-melt PP; 15 parts of POE; 40 parts of reinforcing filler, wherein the reinforcing filler comprises calcium carbonate and talcum powder, and the calcium carbonate is light calcium carbonate; 0.2 parts of light stabilizer; 1 part of antioxidant, wherein the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; 4 parts of MAH-g-PP; 1 part of foaming agent, wherein the foaming agent comprises azodicarbonamide and a compound foaming agent, the compound foaming agent comprises polyvinyl sodium bicarbonate foaming master batch EF405, and the polyvinyl sodium bicarbonate foaming master batch EF405: azodicarbonamide=100: 1 to 5; 1 part of foaming auxiliary agent, wherein the foaming auxiliary agent comprises zinc oxide.
As shown in fig. 1, the method for preparing the foamed polypropylene floor comprises the following steps:
s1, carrying out blending granulation on 40 parts of branched high melt and 15 parts of POE through a high-speed mixer and a double-screw extruder to obtain blending modified particles;
s2, taking the prepared blending modified particles as a resin matrix, respectively mixing with 40 parts of reinforcing filler, 0.2 part of light stabilizer, 1 part of antioxidant and 4 parts of MAH-g-PP, and preparing the required mixed particles again through a double screw extruder;
s3, mixing the mixed particles with 1 part of foaming agent and 1 part of foaming auxiliary agent;
s4, heating and extruding through a single screw extrusion foaming experimental device;
s5, extruding and shaping the formed sheet through a calender;
s6, carrying out surface UV tempering treatment on the shaped sheet, firstly putting hot water with the temperature of 80 ℃, and then putting cold water with the temperature of 25 ℃ to obtain a substrate layer;
s7, carrying out slitting, slotting and packaging operations after hot-pressing the substrate layer and the decorative surface layer.
Example 2: the difference from example 1 is that the substrate layer comprises the following raw material composition:
50 parts of branched high-melt PP; 20 parts of POE; 40 parts of reinforcing filler; 0.3 parts of light stabilizer; 1.5 parts of antioxidant; 4 parts of MAH-g-PP; 1.5 parts of foaming agent; 1 part of foaming auxiliary agent.
The preparation method of the foamed polypropylene floor was the same as in example 1.
Example 3: the difference from example 2 is that the substrate layer comprises the following raw material composition:
55 parts of branched high-melt PP; 30 parts of POE; 50 parts of reinforcing filler; 0.5 parts of light stabilizer; 2 parts of an antioxidant; 6 parts of MAH-g-PP; 1 part of foaming agent; 1.5 parts of foaming auxiliary.
The preparation method of the foamed polypropylene floor was the same as in example 1.
Example 4: the difference from example 3 is that the substrate layer comprises the following raw material composition:
65 parts of branched high melt PP; 30 parts of POE; 60 parts of reinforcing filler; 0.4 parts of light stabilizer; 3 parts of an antioxidant; 8 parts of MAH-g-PP; 1.5 parts of foaming agent; 2 parts of foaming auxiliary.
The preparation method of the foamed polypropylene floor was the same as in example 1.
Example 5: the difference from example 4 is that the substrate layer comprises the following raw material composition:
80 parts of branched high-melt PP; 30 parts of POE; 60 parts of reinforcing filler; 0.5 parts of light stabilizer; 4 parts of an antioxidant; 8 parts of MAH-g-PP; 2 parts of foaming agent; 2 parts of foaming auxiliary.
The preparation method of the foamed polypropylene floor was the same as in example 1.
Comparative example 1: the foamed polypropylene floor comprises a substrate layer and a decorative surface layer arranged on the substrate layer, wherein the substrate layer comprises the following raw material components in parts by weight with reference to fig. 2:
40 parts of branched high-melt PP; 45 parts of reinforcing filler, wherein the reinforcing filler comprises calcium carbonate and talcum powder, and the calcium carbonate is light calcium carbonate; 0.2 parts of light stabilizer; 0.5 part of antioxidant, wherein the antioxidant is tetra [ beta- ]
Pentaerythritol (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate; 4 parts of MAH-g-PP; 1.5 parts of foaming agent, wherein the foaming agent comprises azodicarbonamide and a compound foaming agent, the compound foaming agent comprises polyvinyl sodium bicarbonate foaming master batch EF405, and the polyvinyl sodium bicarbonate foaming master batch EF405: azodicarbonamide=100: 1 to 5; 1 part of foaming auxiliary agent, wherein the foaming auxiliary agent comprises zinc oxide.
Comparative example 2: the foamed polypropylene floor comprises a substrate layer and a decorative surface layer arranged on the substrate layer, wherein the substrate layer comprises the following raw material components in parts by weight with reference to fig. 2:
40 parts of branched high-melt PP; 26 parts of POE; 45 parts of reinforcing filler, wherein the reinforcing filler comprises calcium carbonate and talcum powder, and the calcium carbonate is light calcium carbonate; 0.2 parts of light stabilizer; 0.5 part of antioxidant, wherein the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]; 4 parts of MAH-g-PP; 1.5 parts of foaming agent, wherein the foaming agent comprises azodicarbonamide and a compound foaming agent, the compound foaming agent comprises polyvinyl sodium bicarbonate foaming master batch EF405, and the polyvinyl sodium bicarbonate foaming master batch EF405: azodicarbonamide=100: 1 to 5; 1 part of foaming auxiliary agent, wherein the foaming auxiliary agent comprises zinc oxide.
Wherein, referring to fig. 3, the single screw extruder and the twin screw extruder are each provided with zones 1, 2, 3, 4 and 5, and the temperatures of zones 1, 2, 3, 4 and 5 on the single screw extruder are 135 ℃, 155 ℃, 175 ℃ and 175 ℃, and the temperatures of zones 1, 2, 3, 4 and 5 on the twin screw extruder are 125 ℃, 145 ℃, 165 ℃, 180 ℃ and 165 ℃, respectively.
The method is characterized by comprising the following steps of: the mass ratio of POE to PP is 0/10, the cross section of the sample is mostly large-size cells, the number of the cells is sparse, and the cross section of the sample is increased from 0/10 to 4/6 along with the mass ratio of POE to PPThe average cell size was reduced from 187.3um to 78.4um, and the cell density on the cross section of the sample was from 0.84X 104cm 3 Increased to from 2.3X104 cm 3 Apparent density of from 0.62g/cm 3 Increase to 0.98g/cm 3 . This demonstrates that the addition of POE can effectively improve the melt strength of the material and effectively restrict the growth of bubbles during foaming, so that the cell structure on the sample cross section changes from "large and sparse" to "small and dense".
In addition, the POE content in the material is increased, and the impact strength of the sample is also increased: when the mass ratio of POE to PP is increased from 0/10 to 4/6, the impact strength of the sample is also increased from 2.2kJ/m 2 Increased to 4.1kJ/m 2 The improvement is 84 percent. This is mainly because the better compatibility between POE and PP allows POE particles to be uniformly dispersed in PP matrix by melt blending and act as stress concentration points during impact testing, creating a large amount of silver streaks and shear bands within the sample, thus absorbing a large amount of impact energy. Moreover, the stress fields between different silver patterns have mutual interference phenomenon, which also reduces the stress near the silver patterns and prevents the silver patterns from further expanding.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (7)
1. The foamed polypropylene floor comprises a substrate layer and a decorative surface layer arranged on the substrate layer, and is characterized in that: the substrate layer comprises the following raw material components in parts by weight:
20-80 parts of branched high-melt PP;
10-30 parts of POE;
20-80 parts of reinforcing filler;
0.1-0.5 part of light stabilizer;
0.5-5 parts of antioxidant;
2-8 parts of MAH-g-PP;
0.5-2 parts of foaming agent;
0.5-2 parts of foaming auxiliary agent.
2. The foamed polypropylene flooring according to claim 1, wherein: the reinforcing filler comprises calcium carbonate and talcum powder, and the calcium carbonate is light calcium carbonate.
3. The foamed polypropylene flooring according to claim 1, wherein: the antioxidant is pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ].
4. The foamed polypropylene flooring according to claim 1, wherein: the foaming agent comprises azodicarbonamide and a composite foaming agent, wherein the composite foaming agent comprises polyvinyl sodium bicarbonate foaming master batch EF405.
5. The foamed polypropylene flooring according to claim 4, wherein: the polyvinyl sodium bicarbonate foaming master batch EF405: azodicarbonamide=100: 1 to 5.
6. The foamed polypropylene floor panel and the preparation method thereof according to claim 1, wherein: the foaming aid comprises zinc oxide.
7. A method for preparing a foamed polypropylene flooring according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, blending and granulating 20-80 parts of branched high melt and 10-30 parts of POE (polyolefin elastomer) by a high-speed mixer and a double-screw extruder to obtain blending modified particles;
s2, taking the prepared blending modified particles as a resin matrix, respectively mixing with 20-80 parts of reinforcing filler, 0.1-0.5 part of light stabilizer, 0.5-5 parts of antioxidant and 2-8 parts of MAH-g-PP, and preparing the required mixed particles again by a double screw extruder;
s3, mixing the mixed particles with 0.5-2 parts of foaming agent and 0.5-2 parts of foaming auxiliary agent;
s4, heating and extruding through a single screw extrusion foaming experimental device;
s5, extruding and shaping the formed sheet through a calender;
s6, carrying out surface UV tempering treatment on the shaped sheet, firstly putting hot water with the temperature of 80 ℃, and then putting cold water with the temperature of 25 ℃ to obtain a substrate layer;
s7, carrying out slitting, slotting and packaging operations after hot-pressing the substrate layer and the decorative surface layer.
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| CN102311582A (en) * | 2011-07-06 | 2012-01-11 | 惠州市昌亿科技股份有限公司 | Polypropylene composite material for outdoor sport floor and preparation method thereof |
| CN103012970A (en) * | 2012-12-03 | 2013-04-03 | 合肥杰事杰新材料股份有限公司 | Weatherproof ageing-resistant polypropylene material and preparation method thereof |
| CN108026730A (en) * | 2015-07-24 | 2018-05-11 | 明和科技（唐山）股份有限公司 | Light-weight environment-friendly type polypropylene composite materials floor and preparation method thereof |
| CN110103550A (en) * | 2019-05-23 | 2019-08-09 | 福建思嘉环保材料科技有限公司 | A kind of PP fretting map floor and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311582A (en) * | 2011-07-06 | 2012-01-11 | 惠州市昌亿科技股份有限公司 | Polypropylene composite material for outdoor sport floor and preparation method thereof |
| CN103012970A (en) * | 2012-12-03 | 2013-04-03 | 合肥杰事杰新材料股份有限公司 | Weatherproof ageing-resistant polypropylene material and preparation method thereof |
| CN108026730A (en) * | 2015-07-24 | 2018-05-11 | 明和科技（唐山）股份有限公司 | Light-weight environment-friendly type polypropylene composite materials floor and preparation method thereof |
| CN110103550A (en) * | 2019-05-23 | 2019-08-09 | 福建思嘉环保材料科技有限公司 | A kind of PP fretting map floor and preparation method thereof |
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