CN117186347A - Modified bamboo fiber sponge and preparation method thereof - Google Patents
Modified bamboo fiber sponge and preparation method thereof Download PDFInfo
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- CN117186347A CN117186347A CN202311018985.6A CN202311018985A CN117186347A CN 117186347 A CN117186347 A CN 117186347A CN 202311018985 A CN202311018985 A CN 202311018985A CN 117186347 A CN117186347 A CN 117186347A
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- 239000000835 fiber Substances 0.000 title claims abstract description 187
- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 159
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 159
- 241001330002 Bambuseae Species 0.000 title claims abstract description 159
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 159
- 239000011425 bamboo Substances 0.000 title claims abstract description 159
- 238000002360 preparation method Methods 0.000 title description 14
- 229920005862 polyol Polymers 0.000 claims abstract description 37
- 150000003077 polyols Chemical class 0.000 claims abstract description 37
- 239000003054 catalyst Substances 0.000 claims abstract description 30
- 229920002545 silicone oil Polymers 0.000 claims abstract description 20
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 18
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 66
- 238000003756 stirring Methods 0.000 claims description 46
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 45
- 238000005406 washing Methods 0.000 claims description 34
- XMGQYMWWDOXHJM-JTQLQIEISA-N (+)-α-limonene Chemical compound CC(=C)[C@@H]1CCC(C)=CC1 XMGQYMWWDOXHJM-JTQLQIEISA-N 0.000 claims description 32
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 30
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 24
- 230000004913 activation Effects 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 18
- 239000008367 deionised water Substances 0.000 claims description 17
- 229910021641 deionized water Inorganic materials 0.000 claims description 17
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 16
- 229920000570 polyether Polymers 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 14
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 13
- 229920000642 polymer Polymers 0.000 claims description 12
- CGCRIQNPIBHVCQ-UHFFFAOYSA-N 2-methylidenebutanedioyl dichloride Chemical compound ClC(=O)CC(=C)C(Cl)=O CGCRIQNPIBHVCQ-UHFFFAOYSA-N 0.000 claims description 11
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical group CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 10
- 239000003999 initiator Substances 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000004132 cross linking Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 230000009435 amidation Effects 0.000 claims description 7
- 238000007112 amidation reaction Methods 0.000 claims description 7
- 230000007935 neutral effect Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical group N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 5
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 5
- 239000005457 ice water Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 8
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000000243 solution Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 11
- 239000011259 mixed solution Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005530 etching Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 150000005846 sugar alcohols Polymers 0.000 description 4
- 241000222122 Candida albicans Species 0.000 description 3
- 241000191967 Staphylococcus aureus Species 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
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- 229940095731 candida albicans Drugs 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
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- 238000001514 detection method Methods 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 150000001263 acyl chlorides Chemical group 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000004321 preservation Methods 0.000 description 1
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- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention relates to a modified bamboo fiber sponge, which comprises the following components in parts by weight: 35-55 parts of modified polyisocyanate, 95-110 parts of polyol, 10-20 parts of modified bamboo fiber, 1.5-2.5 parts of foaming agent, 0.6-1.2 parts of silicone oil and 0.3-0.5 part of catalyst. The modified bamboo fiber sponge prepared by the invention adopts the modified polyisocyanate and the polyol as reaction raw materials and adopts the modified bamboo fiber as the modified raw material, so that the antibacterial performance of the sponge is enhanced, and the basic properties of the traditional bamboo fiber sponge, such as hand feeling, strength, elasticity and aging resistance, are improved.
Description
Technical Field
The invention relates to the field of sponges, in particular to a modified bamboo fiber sponge and a preparation method thereof.
Background
The sponge is a porous material, is mostly made of wood cellulose fiber or foamed plastic polymer, has the characteristics of good hygroscopicity, heat preservation, heat insulation, sound absorption, shock absorption, flame retardance, static resistance and the like, and is widely applied to the production and protection of products in various fields such as automobiles, furniture, daily necessities, underwear and the like.
The sponge product brings much convenience to users due to the excellent practicability, but at the same time, the sponge is easy to cause various bacteria to grow inside due to absorbing moisture in the environment, especially in places with warm and humid climates, and the interior of the damp and hot sponge provides a warm bed for breeding bacteria such as mold, thereby not only bringing inconvenience to use, but also causing hidden danger to health of people. At present, the conventional solution is to reduce the density of the sponge product, enhance the air permeability inside the sponge product and slow down the bacterial breeding speed, but the sponge is generally poor in hand feeling and insufficient in stability, the sponge product is easy to deform, the service life is short, and the bacterial breeding cannot be fundamentally avoided.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a modified bamboo fiber sponge and a preparation method thereof.
The aim of the invention is realized by adopting the following technical scheme:
the modified bamboo fiber sponge comprises the following components in parts by weight:
35-55 parts of modified polyisocyanate, 95-110 parts of polyol, 10-20 parts of modified bamboo fiber, 1.5-2.5 parts of foaming agent, 0.6-1.2 parts of silicone oil and 0.3-0.5 part of catalyst.
Preferably, the modified polyisocyanate is one or more of modified MDI-8019 (Wanhua chemical group Co., ltd.), modified MDI-2412 (Shanghai bright-day Utility Co., ltd.), and modified MDI-5412 (Shandong Daonowei Co., ltd.).
Preferably, the polyol is a product obtained by mixing polyether polyol and polymer polyol according to a mass ratio of 6-8:2-4; the polyether POLYOL comprises one or more of the models POP-TP 360, POP-TP 390 and POP-TP 440, and the polymer POLYOL comprises one or more of the models POP-36/28, POP-36/30 and POP-36/45.
Preferably, the modified bamboo fiber is obtained by performing surface activation treatment on the basis of the bamboo fiber to obtain a bamboo fiber activation treatment object, performing surface amino treatment to obtain a bamboo fiber amino treatment object, performing surface coating amidation treatment to obtain coating amidated bamboo fiber, and performing surface crosslinking treatment to obtain the modified bamboo fiber.
Preferably, the foaming agent is deionized water.
Preferably, the silicone oil is polyether modified silicone oil, and the model comprises one or more of H-204, MSD-9103, MSD-9102 and OFX-0190.
Preferably, the catalyst is an organotin-based catalyst, including stannous octoate (T-9) or dibutyltin dilaurate (T-12).
Preferably, the surface activation treatment process includes:
mixing bamboo fiber and sodium hydroxide solution, dispersing at room temperature, heating to 45-55deg.C, stirring for 1-2 hr, centrifuging to remove liquid, washing the rest solid until the water washing liquid is neutral, and drying in vacuum box to obtain bamboo fiber activated product;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.01-0.1mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:8-12.
Preferably, the surface amino treatment process comprises:
dispersing the bamboo fiber activation treatment in deionized water, adding gamma-aminopropyl triethoxysilane, heating to 60-70 ℃, preserving heat, stirring for 5-6h, centrifuging to collect fiber, washing the fiber with water for three times, and drying in a vacuum box to obtain bamboo fiber amino treatment;
wherein the mass ratio of the bamboo fiber activation treatment substance, the gamma-aminopropyl triethoxysilane and the deionized water is 1:0.1-0.3:10-15.
Preferably, the surface coating amidation treatment process comprises the following steps:
mixing clothes Kang Xianlv with dichloromethane, introducing nitrogen as a protective gas, stirring uniformly in an ice water bath, then gradually adding a bamboo fiber amino treatment substance, dispersing uniformly, adding a small amount of catalyst, gradually heating to room temperature, stirring and reacting for 8-12h, centrifuging to collect fibers after the reaction is finished, washing three times with dichloromethane, and drying to obtain the clothes-kang amidated bamboo fibers;
wherein the mass ratio of the bamboo fiber amino treatment substance to the itaconyl chloride to the dichloromethane is 1:0.32-48:10-15; the catalyst is 4-dimethylaminopyridine, and the addition amount of the catalyst is 4-8% of the mass of the itaconyl chloride.
Preferably, the surface cross-linking treatment includes:
adding N, N-dimethylformamide into the Yikang amidated bamboo fiber, dispersing uniformly at room temperature, then dropwise adding d-limonene, continuously stirring during the period, stirring until the mixture is uniform, introducing nitrogen as a shielding gas, adding an initiator, heating to 50-60 ℃, keeping the temperature, stirring for 4-8 hours, centrifuging after the reaction is finished, collecting the fiber, washing the fiber with alcohol for three times, and drying to obtain the modified bamboo fiber;
wherein the mass ratio of the itaconyl amidated bamboo fiber to the d-limonene to the N, N-dimethylformamide is 1:0.27-0.54:10-15; the initiator is azodiisobutyronitrile, and the addition amount is 3-7% of the mass of d-limonene.
The water washing mentioned in the present invention is distilled water washing, and the alcohol washing is absolute ethanol washing.
Preferably, the preparation process of the modified bamboo fiber sponge comprises the following steps:
(1) Adding the modified bamboo fibers into the polyalcohol, fully stirring and dispersing, sequentially adding the silicone oil and the foaming agent, and stirring and dispersing at room temperature to form uniform mixed solution;
(2) Adding the weighed modified polyisocyanate into the mixed solution in the step (1), dispersing uniformly at room temperature, adding a catalyst, transferring into a mold at 50-60 ℃, molding in the mold for 5-10min, and demolding to obtain the modified bamboo fiber sponge.
The beneficial effects of the invention are as follows:
1. the modified bamboo fiber sponge prepared by the invention adopts the modified polyisocyanate and the polyol as reaction raw materials and adopts the modified bamboo fiber as the modified raw material, so that the antibacterial performance of the sponge is enhanced, and the basic properties of the traditional bamboo fiber sponge, such as hand feeling, strength, elasticity and aging resistance, are improved.
2. In the raw materials of the invention, the activity of the modified polyisocyanate is strong, the polyol adopts a mode of mixing polyether polyol and polymer polyol, the mixture of the two polyols can ensure that the open cell property of the foam is better, the hardness and the bearing property are also enhanced to a certain extent, and the modified bamboo fiber is used as a modifier, so that the antibacterial property, the mechanical strength and the ageing resistance of the sponge are improved.
3. The invention adds modified bamboo fiber into the sponge, and the preparation process of the modified bamboo fiber comprises the following steps: firstly, carrying out heat treatment on bamboo fibers in sodium hydroxide alkali liquor for a period of time, so as to soften and etch the surfaces of the bamboo fibers and obtain bamboo fiber activation treated matters; then, treating the fiber in an aqueous solution by using aminosilane gamma-aminopropyl triethoxy silane to obtain a bamboo fiber amino-treated product with the surface rich in amino; then, using the itaconyl chloride containing double bonds and acyl chloride groups to mix with the amino treatment substance of the bamboo fiber, and obtaining the itaconyl amidated bamboo fiber containing double bonds and amide groups through the combination of amino groups and acyl chloride groups; and finally, carrying out double bond crosslinking reaction on the d-limonene containing double bonds and the itaconyl amidated bamboo fibers to finally obtain the modified bamboo fibers.
Detailed Description
The technical scheme of the invention is described below through specific examples. It is to be understood that the mention of one or more method steps of the present invention does not exclude the presence of other method steps before and after the combination step or that other method steps may be interposed between these explicitly mentioned steps; it should also be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. Moreover, unless otherwise indicated, the numbering of the method steps is merely a convenient tool for identifying the method steps and is not intended to limit the order of arrangement of the method steps or to limit the scope of the invention in which the invention may be practiced, as such changes or modifications in their relative relationships may be regarded as within the scope of the invention without substantial modification to the technical matter.
In order to better understand the above technical solution, exemplary embodiments of the present invention are described in more detail below. While exemplary embodiments of the invention are shown, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention is further described with reference to the following examples.
Example 1
The modified bamboo fiber sponge comprises the following components in parts by weight:
45 parts of modified polyisocyanate, 105 parts of polyol, 15 parts of modified bamboo fiber, 2 parts of foaming agent, 0.9 part of silicone oil and 0.4 part of catalyst.
The modified polyisocyanate was modified MDI-8019 (Wanhua chemical group Co., ltd.). The polyol is a product obtained by mixing polyether polyol and polymer polyol according to a mass ratio of 7:3; the polyether POLYOL is POP-36/28, and the polymer POLYOL is POP-TP 360. The foaming agent is deionized water. The silicone oil is polyether modified silicone oil, and the model is H-204. The catalyst is organotin catalyst stannous octoate (T-9).
The preparation method of the modified bamboo fiber comprises the following steps:
s1, bamboo fiber surface etching:
mixing bamboo fiber and sodium hydroxide solution, dispersing at room temperature, heating to 50deg.C, stirring for 1 hr, centrifuging to remove liquid, washing the rest solid until the washing liquid is neutral, and drying in a vacuum box to obtain bamboo fiber activation treatment product;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.05mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:10;
s2, surface amino treatment:
dispersing the bamboo fiber activation treatment in deionized water, adding gamma-aminopropyl triethoxysilane, heating to 60 ℃, preserving heat and stirring for 5 hours, centrifuging to collect fibers, washing the fibers for three times, and drying in a vacuum box to obtain a bamboo fiber amino treatment substance;
wherein the mass ratio of the bamboo fiber activation treatment substance, the gamma-aminopropyl triethoxysilane and the deionized water is 1:0.1:10;
s3, surface coating amidation treatment:
mixing clothes Kang Xianlv with dichloromethane, introducing nitrogen as a protective gas, stirring uniformly in an ice water bath, then gradually adding a bamboo fiber amino treatment substance, dispersing uniformly, adding a small amount of catalyst, gradually heating to room temperature, stirring for reaction for 8 hours, centrifuging to collect fibers after the reaction is finished, washing three times with dichloromethane, and drying to obtain the clothes-kang amidated bamboo fibers;
wherein the mass ratio of the bamboo fiber amino treatment substance to the itaconyl chloride to the dichloromethane is 1:0.32:10; the catalyst is 4-dimethylaminopyridine, and the addition amount is 4% of the mass of the itaconyl chloride;
s4, surface cross-linking treatment:
adding N, N-dimethylformamide into the Yikang amidated bamboo fiber, dispersing uniformly at room temperature, then dropwise adding d-limonene, continuously stirring during the period, stirring uniformly, introducing nitrogen as a shielding gas, adding an initiator, heating to 50 ℃, preserving heat and stirring for 4 hours, centrifuging after the reaction is finished, collecting the fiber, washing the fiber with alcohol for three times, and drying to obtain the modified bamboo fiber;
wherein the mass ratio of the itaconyl amidated bamboo fiber to the d-limonene to the N, N-dimethylformamide is 1:0.27:10; the initiator is azodiisobutyronitrile, and the addition amount is 3% of the mass of d-limonene.
The preparation process of the modified bamboo fiber sponge comprises the following steps:
(1) Adding the modified bamboo fibers into the polyalcohol, fully stirring and dispersing, sequentially adding the silicone oil and the foaming agent, and stirring and dispersing at room temperature to form uniform mixed solution;
(2) And (3) adding the weighed modified polyisocyanate into the mixed solution in the step (1), dispersing uniformly at room temperature, adding a catalyst, transferring into a mold at 50 ℃, molding in the mold for 5min, and demolding to obtain the modified bamboo fiber sponge.
Example 2
The modified bamboo fiber sponge comprises the following components in parts by weight:
35 parts of modified polyisocyanate, 95 parts of polyol, 10 parts of modified bamboo fiber, 1.5 parts of foaming agent, 0.6 part of silicone oil and 0.3 part of catalyst.
The modified polyisocyanate is modified MDI-2412 (Shanghai bright-Xingxing industry Co., ltd.). The polyol is a product obtained by mixing polyether polyol and polymer polyol according to a mass ratio of 6:4; the polyether POLYOL is POP-TP 390 and the polymer POLYOL is POP-36/30. The foaming agent is deionized water. The silicone oil is polyether modified silicone oil, and the model is MSD-9103. The catalyst is organotin catalyst dibutyl tin dilaurate (T-12).
The preparation method of the modified bamboo fiber comprises the following steps:
s1, bamboo fiber surface etching:
mixing bamboo fiber and sodium hydroxide solution, dispersing at room temperature, heating to 45deg.C, stirring for 1 hr, centrifuging to remove liquid, washing the rest solid until the washing liquid is neutral, and drying in a vacuum box to obtain bamboo fiber activation treatment product;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.01mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:8;
s2, surface amino treatment:
dispersing the bamboo fiber activation treatment in deionized water, adding gamma-aminopropyl triethoxysilane, heating to 60 ℃, preserving heat and stirring for 5 hours, centrifuging to collect fibers, washing the fibers for three times, and drying in a vacuum box to obtain a bamboo fiber amino treatment substance;
wherein the mass ratio of the bamboo fiber activation treatment substance, the gamma-aminopropyl triethoxysilane and the deionized water is 1:0.1:10;
s3, surface coating amidation treatment:
mixing clothes Kang Xianlv with dichloromethane, introducing nitrogen as a protective gas, stirring uniformly in an ice water bath, then gradually adding a bamboo fiber amino treatment substance, dispersing uniformly, adding a small amount of catalyst, gradually heating to room temperature, stirring for reaction for 8 hours, centrifuging to collect fibers after the reaction is finished, washing three times with dichloromethane, and drying to obtain the clothes-kang amidated bamboo fibers;
wherein the mass ratio of the bamboo fiber amino treatment substance to the itaconyl chloride to the dichloromethane is 1:0.32:10; the catalyst is 4-dimethylaminopyridine, and the addition amount is 4% of the mass of the itaconyl chloride;
s4, surface cross-linking treatment:
adding N, N-dimethylformamide into the Yikang amidated bamboo fiber, dispersing uniformly at room temperature, then dropwise adding d-limonene, continuously stirring during the period, stirring until the mixture is uniform, introducing nitrogen as a shielding gas, adding an initiator, heating to 50 ℃, keeping the temperature, stirring for 4-8 hours, centrifuging after the reaction is finished, collecting the fiber, washing the fiber with alcohol for three times, and drying to obtain the modified bamboo fiber;
wherein the mass ratio of the itaconyl amidated bamboo fiber to the d-limonene to the N, N-dimethylformamide is 1:0.27:10; the initiator is azodiisobutyronitrile, and the addition amount is 3% of the mass of d-limonene.
The preparation process of the modified bamboo fiber sponge comprises the following steps:
(1) Adding the modified bamboo fibers into the polyalcohol, fully stirring and dispersing, sequentially adding the silicone oil and the foaming agent, and stirring and dispersing at room temperature to form uniform mixed solution;
(2) And (3) adding the weighed modified polyisocyanate into the mixed solution in the step (1), dispersing uniformly at room temperature, adding a catalyst, transferring into a mold at 50 ℃, molding in the mold for 5min, and demolding to obtain the modified bamboo fiber sponge.
Example 3
The modified bamboo fiber sponge comprises the following components in parts by weight:
55 parts of modified polyisocyanate, 110 parts of polyol, 20 parts of modified bamboo fiber, 2.5 parts of foaming agent, 1.2 parts of silicone oil and 0.5 part of catalyst.
The modified polyisocyanate is modified MDI-5412 (Navigator Co., ltd.). The polyol is a product obtained by mixing polyether polyol and polymer polyol according to a mass ratio of 8:2; the polyether POLYOL is POP-36/45, and the polymer POLYOL is POP-TP 440. The foaming agent is deionized water. The silicone oil is polyether modified silicone oil, and the model OFX-0190. The catalyst is organotin catalyst stannous octoate (T-9).
The preparation method of the modified bamboo fiber comprises the following steps:
s1, bamboo fiber surface etching:
mixing bamboo fiber and sodium hydroxide solution, dispersing at room temperature, heating to 55deg.C, stirring for 2 hr, centrifuging to remove liquid, washing the rest solid until the washing liquid is neutral, and drying in a vacuum box to obtain bamboo fiber activation treatment product;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.1mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:12;
s2, surface amino treatment:
dispersing the bamboo fiber activation treatment in deionized water, adding gamma-aminopropyl triethoxysilane, heating to 70 ℃, preserving heat, stirring for 6 hours, centrifuging to collect fibers, washing the fibers for three times, and drying in a vacuum box to obtain a bamboo fiber amino treatment substance;
wherein the mass ratio of the bamboo fiber activation treatment substance, the gamma-aminopropyl triethoxysilane and the deionized water is 1:0.3:15;
s3, surface coating amidation treatment:
mixing clothes Kang Xianlv with dichloromethane, introducing nitrogen as a protective gas, stirring uniformly in an ice water bath, then gradually adding a bamboo fiber amino treatment substance, dispersing uniformly, adding a small amount of catalyst, gradually heating to room temperature, stirring for reaction for 12 hours, centrifuging to collect fibers after the reaction is finished, washing three times with dichloromethane, and drying to obtain the clothes-kang amidated bamboo fibers;
wherein the mass ratio of the bamboo fiber amino treatment substance to the itaconyl chloride to the dichloromethane is 1:48:15; the catalyst is 4-dimethylaminopyridine, and the addition amount is 8% of the mass of the itaconyl chloride;
s4, surface cross-linking treatment:
adding N, N-dimethylformamide into the Yikang amidated bamboo fiber, dispersing uniformly at room temperature, then dropwise adding d-limonene, continuously stirring during the period, stirring uniformly, introducing nitrogen as a shielding gas, adding an initiator, heating to 60 ℃, preserving heat, stirring for 8 hours, centrifuging after the reaction is finished, collecting the fiber, washing the fiber with alcohol for three times, and drying to obtain the modified bamboo fiber;
wherein the mass ratio of the itaconyl amidated bamboo fiber to the d-limonene to the N, N-dimethylformamide is 1:0.54:15; the initiator is azodiisobutyronitrile, and the addition amount is 7% of the mass of d-limonene.
The preparation process of the modified bamboo fiber sponge comprises the following steps:
(1) Adding the modified bamboo fibers into the polyalcohol, fully stirring and dispersing, sequentially adding the silicone oil and the foaming agent, and stirring and dispersing at room temperature to form uniform mixed solution;
(2) And (3) adding the weighed modified polyisocyanate into the mixed solution in the step (1), dispersing uniformly at room temperature, adding a catalyst, transferring into a mold at 60 ℃, molding in the mold for 10min, and demolding to obtain the modified bamboo fiber sponge.
Comparative example 1
A bamboo fiber sponge is different from example 1 in that modified bamboo fibers are replaced by bamboo fibers, the fineness of the bamboo fibers is 1.4-1.6D, and the length of the bamboo fibers is 35-38mm.
Comparative example 2
The difference from example 1 is that the modified bamboo fiber sponge is different from the modified bamboo fiber preparation method, which comprises the following steps:
mixing bamboo fiber and sodium hydroxide solution, dispersing uniformly at room temperature, heating to 50deg.C, maintaining the temperature and stirring for 1 hr, centrifuging to remove liquid, washing the rest solid until the washing liquid is neutral, and drying in a vacuum box to obtain modified bamboo fiber;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.05mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:10.
Comparative example 3
The difference from example 1 is that the modified bamboo fiber sponge is different from the modified bamboo fiber preparation method, which comprises the following steps:
s1, bamboo fiber surface etching:
mixing bamboo fiber and sodium hydroxide solution, dispersing at room temperature, heating to 50deg.C, stirring for 1 hr, centrifuging to remove liquid, washing the rest solid until the washing liquid is neutral, and drying in a vacuum box to obtain bamboo fiber activation treatment product;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.05mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:10;
s2, surface amino treatment:
dispersing the bamboo fiber activation treatment in deionized water, adding gamma-aminopropyl triethoxysilane, heating to 60 ℃, preserving heat and stirring for 5 hours, centrifuging to collect fibers, washing the fibers for three times, and drying in a vacuum box to obtain modified bamboo fibers;
wherein the mass ratio of the bamboo fiber activation treatment substance, the gamma-aminopropyl triethoxysilane and the deionized water is 1:0.1:10.
Experimental example
The properties of the bamboo fiber sponges prepared in example 1 and comparative examples 1 to 3 were compared and the results are shown in Table 1 below.
The detection comprises the following steps:
the hand feeling is artificial touch feeling, and an evaluation group consisting of ten people performs actual touch evaluation.
Tensile strength and elongation at break were measured by the method of reference standard ISO 1798-2008.
Compression set was measured according to the method of standard ISO 1856-2007.
The conditions of the wet heat aging are as follows: the temperature is 80 ℃, the humidity is 95%, and the aging is 120 hours.
Antibacterial property, detection comprises colibacillus, staphylococcus aureus antibacterial and candida albicans, and detection standard is referred to GB/T20944.3-2008.
Table 1 comparison of the properties of the sponges obtained in different ways
Example 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | |
Hand feel | Softening and softening | Slightly harder | Softening and softening | Softening and softening |
Tensile Strength (KPa) | 352 | 313 | 294 | 307 |
Elongation at break (%) | 129 | 110 | 112 | 118 |
Compression set (%) | 6.4 | 11.4 | 9.5 | 9.2 |
Tensile Strength retention after humid Heat aging (%) | 81 | 63 | 72 | 73 |
Elongation at break retention after humid heat aging (%) | 84 | 67 | 76 | 75 |
Bacteriostasis to E.coli (%) | 99.8 | 92.3 | 93.5 | 93.8 |
Antibacterial activity against Staphylococcus aureus (%) | 99.9 | 94.1 | 92.7 | 93.1 |
Antibacterial activity against Candida albicans (%) | 99.5 | 93.0 | 94.6 | 95.2 |
As can be seen from Table 1, the sponge prepared in example 1 of the present invention has the advantages of good hand feeling, high strength, strong compression resistance, strong aging resistance, and good inhibition performance on colibacillus, staphylococcus aureus and candida albicans, and has better performance than the traditional bamboo fiber sponge.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The modified bamboo fiber sponge is characterized by comprising the following components in parts by weight:
35-55 parts of modified polyisocyanate, 95-110 parts of polyol, 10-20 parts of modified bamboo fiber, 1.5-2.5 parts of foaming agent, 0.6-1.2 parts of silicone oil and 0.3-0.5 part of catalyst;
the modified bamboo fiber is prepared by carrying out surface activation treatment on the basis of the bamboo fiber to obtain a bamboo fiber activation treatment object, carrying out surface amino treatment to obtain a bamboo fiber amino treatment object, carrying out surface coating amidation treatment to obtain coating amidated bamboo fiber, and finally carrying out surface crosslinking treatment.
2. The modified bamboo fiber sponge of claim 1, wherein the modified polyisocyanate is one or more of modified MDI-8019, modified MDI-2412, and modified MDI-5412.
3. The modified bamboo fiber sponge according to claim 1, wherein the polyol is a product obtained by mixing polyether polyol and polymer polyol according to a mass ratio of 6-8:2-4; the polyether POLYOL comprises one or more of the models POP-TP 360, POP-TP 390 and POP-TP 440, and the polymer POLYOL comprises one or more of the models POP-36/28, POP-36/30 and POP-36/45.
4. The modified bamboo fiber sponge of claim 1 wherein the foaming agent is deionized water.
5. The modified bamboo fiber sponge according to claim 1, wherein the silicone oil is polyether modified silicone oil, and the model comprises one or more of H-204, MSD-9103, MSD-9102 and OFX-0190.
6. A modified bamboo fiber sponge according to claim 1 wherein the catalyst is an organotin-based catalyst comprising stannous octoate or dibutyltin dilaurate.
7. The modified bamboo fiber sponge of claim 1 wherein the surface activation treatment comprises:
mixing bamboo fiber and sodium hydroxide solution, dispersing at room temperature, heating to 45-55deg.C, stirring for 1-2 hr, centrifuging to remove liquid, washing the rest solid until the water washing liquid is neutral, and drying in vacuum box to obtain bamboo fiber activated product;
wherein the fineness of the bamboo fiber is 1.4-1.6D, and the length is 35-38mm; the concentration of the sodium hydroxide solution is 0.01-0.1mol/L; the mass ratio of the bamboo fiber to the sodium hydroxide solution is 1:8-12.
8. A modified bamboo fiber sponge according to claim 1, wherein the surface amino treatment comprises:
dispersing the bamboo fiber activation treatment in deionized water, adding gamma-aminopropyl triethoxysilane, heating to 60-70 ℃, preserving heat, stirring for 5-6h, centrifuging to collect fiber, washing the fiber with water for three times, and drying in a vacuum box to obtain bamboo fiber amino treatment;
wherein the mass ratio of the bamboo fiber activation treatment substance, the gamma-aminopropyl triethoxysilane and the deionized water is 1:0.1-0.3:10-15.
9. The modified bamboo fiber sponge of claim 1 wherein the surface finish amidation treatment comprises:
mixing clothes Kang Xianlv with dichloromethane, introducing nitrogen as a protective gas, stirring uniformly in an ice water bath, then gradually adding a bamboo fiber amino treatment substance, dispersing uniformly, adding a small amount of catalyst, gradually heating to room temperature, stirring and reacting for 8-12h, centrifuging to collect fibers after the reaction is finished, washing three times with dichloromethane, and drying to obtain the clothes-kang amidated bamboo fibers;
wherein the mass ratio of the bamboo fiber amino treatment substance to the itaconyl chloride to the dichloromethane is 1:0.32-48:10-15; the catalyst is 4-dimethylaminopyridine, and the addition amount of the catalyst is 4-8% of the mass of the itaconyl chloride.
10. A modified bamboo fiber sponge according to claim 1, wherein the surface cross-linking treatment comprises:
adding N, N-dimethylformamide into the Yikang amidated bamboo fiber, dispersing uniformly at room temperature, then dropwise adding d-limonene, continuously stirring during the period, stirring until the mixture is uniform, introducing nitrogen as a shielding gas, adding an initiator, heating to 50-60 ℃, keeping the temperature, stirring for 4-8 hours, centrifuging after the reaction is finished, collecting the fiber, washing the fiber with alcohol for three times, and drying to obtain the modified bamboo fiber;
wherein the mass ratio of the itaconyl amidated bamboo fiber to the d-limonene to the N, N-dimethylformamide is 1:0.27-0.54:10-15; the initiator is azodiisobutyronitrile, and the addition amount is 3-7% of the mass of d-limonene.
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005272833A (en) * | 2004-02-26 | 2005-10-06 | Sanyo Chem Ind Ltd | Aqueous polyurethane resin dispersion |
CN105504723A (en) * | 2016-01-26 | 2016-04-20 | 芜湖跃飞新型吸音材料股份有限公司 | Halogen-free and flame-retardant interior decoration material for automobiles |
CN106084847A (en) * | 2016-07-12 | 2016-11-09 | 志邦厨柜股份有限公司 | A kind of modified bamboo fibre-reinforced polyamide base cabinet slab and preparation method thereof |
CN107174973A (en) * | 2017-06-30 | 2017-09-19 | 宁波千仁环保科技有限公司 | A kind of preparation method of the plain composite membrane of graphene fiber |
CN108219222A (en) * | 2017-12-30 | 2018-06-29 | 刘滨 | A kind of modified bamboo fibre/Heveatex composite sponge and preparation method thereof |
US20190010300A1 (en) * | 2017-07-04 | 2019-01-10 | Xilinmen Furniture Co., Ltd. | Air-permeable sponge composition and method for preparing air-permeable sponge by using the same |
US20190309173A1 (en) * | 2018-04-04 | 2019-10-10 | Ziqiang Lu | Durable natural fabric products |
CN111592752A (en) * | 2020-06-10 | 2020-08-28 | 东莞市腾崴塑胶制品有限公司 | Bamboo fiber sponge and preparation method thereof |
-
2023
- 2023-08-14 CN CN202311018985.6A patent/CN117186347B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005272833A (en) * | 2004-02-26 | 2005-10-06 | Sanyo Chem Ind Ltd | Aqueous polyurethane resin dispersion |
CN105504723A (en) * | 2016-01-26 | 2016-04-20 | 芜湖跃飞新型吸音材料股份有限公司 | Halogen-free and flame-retardant interior decoration material for automobiles |
CN106084847A (en) * | 2016-07-12 | 2016-11-09 | 志邦厨柜股份有限公司 | A kind of modified bamboo fibre-reinforced polyamide base cabinet slab and preparation method thereof |
CN107174973A (en) * | 2017-06-30 | 2017-09-19 | 宁波千仁环保科技有限公司 | A kind of preparation method of the plain composite membrane of graphene fiber |
US20190010300A1 (en) * | 2017-07-04 | 2019-01-10 | Xilinmen Furniture Co., Ltd. | Air-permeable sponge composition and method for preparing air-permeable sponge by using the same |
CN108219222A (en) * | 2017-12-30 | 2018-06-29 | 刘滨 | A kind of modified bamboo fibre/Heveatex composite sponge and preparation method thereof |
US20190309173A1 (en) * | 2018-04-04 | 2019-10-10 | Ziqiang Lu | Durable natural fabric products |
CN111592752A (en) * | 2020-06-10 | 2020-08-28 | 东莞市腾崴塑胶制品有限公司 | Bamboo fiber sponge and preparation method thereof |
Non-Patent Citations (4)
Title |
---|
JINGHUA MA等: "Constituent diversity of ethanol extracts from pitaya", ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, vol. 15, no. 1, 13 April 2020 (2020-04-13), pages 1 - 10 * |
S. RUDZINSKI等: "Glass fibre reinforced polyamide composites: Thermal behaviour of sizings", COMPOSITES: PART A, vol. 42, 31 December 2011 (2011-12-31), pages 157 * |
杜纪富等: "竹纤 维电子束辐射 接 枝 及 其 磷 的 静 态 和动态吸附", 辐射研究与辐射工艺学报, vol. 39, no. 3, 30 June 2021 (2021-06-30), pages 1 - 10 * |
王志勇;: "新型酰胺基改性聚硅氧烷的制备及应用", 安阳师范学院学报, no. 05, 30 October 2006 (2006-10-30), pages 72 - 74 * |
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