CN116922908A - Waterproof and corrosion-resistant composite fabric and preparation method thereof - Google Patents
Waterproof and corrosion-resistant composite fabric and preparation method thereof Download PDFInfo
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- CN116922908A CN116922908A CN202310766264.7A CN202310766264A CN116922908A CN 116922908 A CN116922908 A CN 116922908A CN 202310766264 A CN202310766264 A CN 202310766264A CN 116922908 A CN116922908 A CN 116922908A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 64
- 230000007797 corrosion Effects 0.000 title claims abstract description 34
- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 238000009726 composite fabrication method Methods 0.000 title description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 89
- 239000002131 composite material Substances 0.000 claims abstract description 87
- 239000004744 fabric Substances 0.000 claims abstract description 84
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 65
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 65
- 239000011527 polyurethane coating Substances 0.000 claims abstract description 35
- 239000012982 microporous membrane Substances 0.000 claims abstract description 26
- 239000004743 Polypropylene Substances 0.000 claims abstract description 24
- 229920001155 polypropylene Polymers 0.000 claims abstract description 24
- 239000012528 membrane Substances 0.000 claims abstract description 23
- 239000004814 polyurethane Substances 0.000 claims description 89
- 229920002635 polyurethane Polymers 0.000 claims description 89
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 83
- 238000003756 stirring Methods 0.000 claims description 50
- MEXKFCWMWJZDMF-UHFFFAOYSA-N n,n-dibutylacetamide Chemical compound CCCCN(C(C)=O)CCCC MEXKFCWMWJZDMF-UHFFFAOYSA-N 0.000 claims description 49
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 39
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 claims description 35
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 30
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 30
- 238000002156 mixing Methods 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000002904 solvent Substances 0.000 claims description 23
- 239000003242 anti bacterial agent Substances 0.000 claims description 19
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 18
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 17
- 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 17
- 239000003963 antioxidant agent Substances 0.000 claims description 17
- 230000003078 antioxidant effect Effects 0.000 claims description 17
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 17
- 150000002009 diols Chemical class 0.000 claims description 17
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000004417 polycarbonate Substances 0.000 claims description 17
- 229920000515 polycarbonate Polymers 0.000 claims description 17
- 239000004611 light stabiliser Substances 0.000 claims description 16
- 235000012239 silicon dioxide Nutrition 0.000 claims description 16
- UVENODJFBHXOMX-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,12-pentacosafluorododecyl-tris(1,1,2,2,2-pentafluoroethoxy)silane Chemical compound FC(F)(F)C(F)(F)O[Si](OC(F)(F)C(F)(F)F)(OC(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F UVENODJFBHXOMX-UHFFFAOYSA-N 0.000 claims description 15
- QFMZQPDHXULLKC-UHFFFAOYSA-N 1,2-bis(diphenylphosphino)ethane Chemical compound C=1C=CC=CC=1P(C=1C=CC=CC=1)CCP(C=1C=CC=CC=1)C1=CC=CC=C1 QFMZQPDHXULLKC-UHFFFAOYSA-N 0.000 claims description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 15
- 239000003054 catalyst Substances 0.000 claims description 15
- 239000001257 hydrogen Substances 0.000 claims description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims description 15
- 239000005543 nano-size silicon particle Substances 0.000 claims description 15
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005098 hot rolling Methods 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- 235000019441 ethanol Nutrition 0.000 claims description 11
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 8
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 8
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 230000035699 permeability Effects 0.000 description 8
- 230000000844 anti-bacterial effect Effects 0.000 description 6
- 239000007822 coupling agent Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 5
- 125000001261 isocyanato group Chemical group *N=C=O 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The application discloses a waterproof and corrosion-resistant composite fabric and a preparation method thereof, wherein the composite fabric is prepared from a polytetrafluoroethylene composite film on the outer layer and a polypropylene fabric on the inner layer; the polytetrafluoroethylene composite membrane is prepared from polytetrafluoroethylene microporous membrane and polyurethane coating. The product prepared by using the polypropylene fabric as a main body has stable mechanical strength, chemical resistance and thermal stability, the polytetrafluoroethylene microporous membrane is a porous membrane obtained by polytetrafluoroethylene extrusion and a series of processing, and has certain flexibility and elasticity, high porosity and uniform pore size distribution, and also has the characteristic of ventilation.
Description
Technical Field
The application relates to the technical field of composite fabrics, in particular to a waterproof and corrosion-resistant composite fabric and a preparation method thereof.
Background
The polypropylene fabric is also called polypropylene fiber, has light weight and high strength, and has wide application in cable, safety net and other aspects, and has electrical insulation property and thermal insulation property, and wide application in textile materials.
The polytetrafluoroethylene microporous membrane is a porous membrane obtained by extruding, calendaring, stretching and heat setting polytetrafluoroethylene, has a spider-web-shaped microporous structure, is a flexible and elastic microporous membrane material, has high porosity, uniform pore size distribution and air permeability and water resistance, and has wide application in textile industry.
Along with the continuous improvement of the living standard of people, people have new requirements on the corrosion resistance and mechanical properties of the waterproof fabric, the air permeability needs to be ensured while the waterproof performance of the fabric is ensured, and the corrosion resistance and mechanical properties also need to be improved to a certain extent. Therefore, the waterproof and corrosion-resistant composite fabric and the preparation method thereof are particularly important.
Disclosure of Invention
The application aims to provide a waterproof and corrosion-resistant composite fabric and a preparation method thereof, so as to solve the problems in the background technology.
In order to solve the technical problems, the application provides the following technical scheme: a waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises, by weight, 40-50 parts of modified polyurethane, 1-2 parts of an antioxidant, 2-3 parts of a light stabilizer and 2-3 parts of an antibacterial agent.
Further, the modified polyurethane is prepared from polyurethane, modified silicon dioxide and a solvent.
Further, the polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dibutylacetamide and dibutyltin dilaurate.
Further, the modified silicon dioxide is prepared from nano silicon dioxide and perfluorododecyl triethoxysilane.
Further, the solvent is formed by mixing N, N-dibutyl acetamide and tetrahydrofuran.
Further, the N, N-dibutylacetamide is prepared from 1, 2-bis (diphenylphosphino) ethane, di-N-butylamine, a catalyst, carbon dioxide and hydrogen.
A preparation method of waterproof and corrosion-resistant composite fabric comprises the following steps,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst, stirring uniformly, introducing hydrogen and carbon dioxide, heating and pressurizing to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of modified silica: adding a solvent into nano silicon dioxide, heating, stirring, introducing ammonia gas, controlling pH, adding perfluorododecyl triethoxysilane, stirring, adding hydrogen chloride, and regulating pH to obtain modified silicon dioxide;
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and the polypropylene fabric through an adhesive, and carrying out hot rolling to obtain the composite fabric.
Further, the specific steps are as follows,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst and absolute ethyl alcohol, stirring uniformly, introducing hydrogen and carbon dioxide, and heating and pressurizing for reaction for 10-12 hours to obtain N, N-dibutylacetamide;
the application uses 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine to react with hydrogen and carbon dioxide in the presence of a catalyst, so as to obtain N, N-dibutyl acetamide, wherein the N, N-dibutyl acetamide can be used as polyurethane for regulating viscosity obtained in the subsequent preparation, and the polyurethane is mixed with tetrahydrofuran to be used as a solvent for preparing modified polyurethane.
(2) Preparation of polyurethane: heating polycarbonate diol at 80-83 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
according to the application, polycarbonate diol, isophorone diisocyanate and dibutyltin dilaurate are used for preparing polyurethane, and N, N-dibutylacetamide is added after the preparation is finished for adjusting the viscosity, so that polyurethane with proper viscosity is obtained.
The polyurethane prepared by the application is finally used as a coating, and is coated on a polytetrafluoroethylene microporous membrane, N-dibutylamine which is one of raw materials is added in the preparation of N, N-dibutylacetamide to react with isocyanato, so that the content of isocyanato of the polyurethane can be reduced to about 16-18, a dimer can be formed, the molecular structure of the polyurethane is a planar structure, the adhesive force after coating is increased, urea compounds can be obtained by reaction, and the generation of the urea compounds can increase the antibacterial performance of the product.
(3) Preparation of modified silica: adding solvent into nano silicon dioxide, heating at 64-66 ℃, stirring, introducing ammonia gas, controlling pH to 7.6-7.8, adding perfluorododecyl triethoxysilane, stirring for 12-13h, adding hydrogen chloride, and regulating pH to 6.7-7.0 to obtain modified silicon dioxide;
according to the application, nano silicon dioxide and perfluorododecyl triethoxysilane are used for reaction, and the silicon dioxide is modified to obtain the modified silicon dioxide with fluorine, so that the mechanical strength and corrosion resistance of a product can be improved, the added solvent is formed by mixing ethanol and deionized water according to the mass ratio of 8-9:1, and the solvent is supplied according to the actual situation in the preparation process, so that the obtained modified silicon dioxide is easy to disperse in the subsequent preparation, and on the other hand, the pH is controlled by using ammonia gas in the preparation system, so that the content of components in the added solvent needs to be controlled in order to ensure the pH stability of the system.
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
the application uses ultrasonic dispersion to disperse the obtained modified silicon dioxide, and the amount and components of the solvent added in the step (3) are required to be limited to a certain extent before the dispersion, so that the modified silicon dioxide can not be dispersed.
With the addition of the modified silicon dioxide, the tensile strength of the material can be improved, the modified silicon dioxide is uniformly dispersed in the system by using an ultrasonic dispersion method, the mechanical property of the product can be further enhanced, the added modified silicon dioxide cannot be too much, and more modified silicon dioxide can damage the integrity of fibers in the fabric, so that the mechanical property of the fabric is reduced.
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a coupling agent, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and the polypropylene fabric through an adhesive, and carrying out hot rolling to obtain the composite fabric.
In the step (3), the solvent is prepared by mixing ethanol and deionized water according to a mass ratio of 8-9:1.
Further, in the step (5), the hot rolling is performed at a temperature of 80 to 100℃and a pressure of 200 to 300 kPa.
Compared with the prior art, the application has the following beneficial effects: the polypropylene fabric has light weight, high strength and certain heat resistance and ageing resistance, the product prepared by using the polypropylene fabric as a main body has stable mechanical strength and chemical and heat resistance, the polytetrafluoroethylene microporous membrane is a porous membrane obtained by extruding polytetrafluoroethylene through a series of processing, and the polytetrafluoroethylene microporous membrane has certain flexibility and elasticity, high porosity and uniform pore size distribution and also has the characteristic of ventilation.
According to the application, the modified polyurethane coating is added on the basis of the polytetrafluoroethylene porous membrane, and the polytetrafluoroethylene microporous membrane is a microporous waterproof moisture-permeable membrane, so that the membrane is used as an outer layer fabric, the waterproof performance of the fabric can be effectively ensured, and meanwhile, the corrosion resistance of the obtained composite fabric is excellent due to the limitation of modified silicon dioxide in the polyurethane coating. The modified polyurethane prepared by the application has certain air permeability, can increase the mechanical strength of the product, and can prolong the service life and antibacterial property of the cloth of the product by adding the antioxidant and the antibacterial agent.
Description of the embodiments
The following description of the embodiments of the present application will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Examples
A waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises the following raw materials in parts by weight, 40 parts of modified polyurethane, 1 part of antioxidant, 2 parts of light stabilizer and 2 parts of antibacterial agent.
The modified polyurethane is prepared from polyurethane, modified silicon dioxide and a solvent.
The polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dibutyl acetamide and dibutyl tin dilaurate.
The modified silicon dioxide is prepared from nano silicon dioxide and perfluorododecyl triethoxysilane.
The solvent is formed by mixing N, N-dibutyl acetamide and tetrahydrofuran.
The N, N-dibutyl acetamide is prepared from 1, 2-bis (diphenylphosphino) ethane, di-N-butylamine, a catalyst, carbon dioxide and hydrogen.
A preparation method of waterproof and corrosion-resistant composite fabric comprises the following specific steps,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst and absolute ethyl alcohol, stirring uniformly, introducing hydrogen and carbon dioxide, and heating and pressurizing for reaction for 10 hours to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol at 80 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of modified silica: adding ethanol and deionized water into nano silicon dioxide, mixing the ethanol and the deionized water according to the mass ratio of 8-9:1, heating, stirring at the temperature of 64 ℃, introducing ammonia gas, controlling the pH value to be 7.6, adding perfluorododecyl triethoxysilane, stirring for 12 hours, adding hydrogen chloride, and regulating the pH value to be 6.7 to obtain modified silicon dioxide;
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a coupling agent, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and a polypropylene fabric through an adhesive, and hot-rolling at the temperature of 80 ℃ and the pressure of 200kPa to obtain the composite fabric.
Examples
A waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises the following raw materials in parts by weight, namely 45 parts of modified polyurethane, 2 parts of antioxidant, 2 parts of light stabilizer and 3 parts of antibacterial agent.
The modified polyurethane is prepared from polyurethane, modified silicon dioxide and a solvent.
The polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dibutyl acetamide and dibutyl tin dilaurate.
The modified silicon dioxide is prepared from nano silicon dioxide and perfluorododecyl triethoxysilane.
The solvent is formed by mixing N, N-dibutyl acetamide and tetrahydrofuran.
The N, N-dibutyl acetamide is prepared from 1, 2-bis (diphenylphosphino) ethane, di-N-butylamine, a catalyst, carbon dioxide and hydrogen.
A preparation method of waterproof and corrosion-resistant composite fabric comprises the following specific steps,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst and absolute ethyl alcohol, stirring uniformly, introducing hydrogen and carbon dioxide, heating and pressurizing for reacting for 11 hours to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol at 82 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of modified silica: adding ethanol and deionized water into nano silicon dioxide, mixing the ethanol and the deionized water according to the mass ratio of 8-9:1, heating, stirring at 65 ℃, introducing ammonia gas, controlling the pH value to be 7.7, adding perfluorododecyl triethoxysilane, stirring for 12-13h, adding hydrogen chloride, and regulating the pH value to be 6.9 to obtain modified silicon dioxide;
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a coupling agent, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and a polypropylene fabric through an adhesive, and hot-rolling at the temperature of 90 ℃ and the pressure of 250kPa to obtain the composite fabric.
Examples
A waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises the following raw materials in parts by weight, namely 50 parts of modified polyurethane, 2 parts of antioxidant, 3 parts of light stabilizer and 3 parts of antibacterial agent.
The modified polyurethane is prepared from polyurethane, modified silicon dioxide and a solvent.
The polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dibutyl acetamide and dibutyl tin dilaurate.
The modified silicon dioxide is prepared from nano silicon dioxide and perfluorododecyl triethoxysilane.
The solvent is formed by mixing N, N-dibutyl acetamide and tetrahydrofuran.
The N, N-dibutyl acetamide is prepared from 1, 2-bis (diphenylphosphino) ethane, di-N-butylamine, a catalyst, carbon dioxide and hydrogen.
A preparation method of waterproof and corrosion-resistant composite fabric comprises the following specific steps,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst and absolute ethyl alcohol, stirring uniformly, introducing hydrogen and carbon dioxide, heating and pressurizing for reaction for 12 hours to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol at 83 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of modified silica: adding ethanol and deionized water into nano silicon dioxide, mixing the ethanol and the deionized water according to the mass ratio of 9:1, heating, stirring at 66 ℃, introducing ammonia gas, controlling the pH value to be 7.8, adding perfluorododecyl triethoxysilane, stirring for 13h, adding hydrogen chloride, and regulating the pH value to be 7.0 to obtain modified silicon dioxide;
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a coupling agent, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and a polypropylene fabric through an adhesive, and hot-rolling at the temperature of 100 ℃ and the pressure of 300kPa to obtain the composite fabric.
A waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises the following raw materials in parts by weight, namely 50 parts of modified polyurethane, 2 parts of antioxidant, 3 parts of light stabilizer and 3 parts of antibacterial agent.
The modified polyurethane is prepared from polyurethane, modified silicon dioxide and a solvent.
The polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dimethylacetamide and dibutyltin dilaurate.
The modified silicon dioxide is prepared from nano silicon dioxide and perfluorododecyl triethoxysilane.
The solvent is formed by mixing N, N-dimethylacetamide and tetrahydrofuran.
A preparation method of waterproof and corrosion-resistant composite fabric comprises the following specific steps,
(1) Preparation of polyurethane: heating polycarbonate diol at 83 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(2) Preparation of modified silica: adding ethanol and deionized water into nano silicon dioxide, mixing the ethanol and the deionized water according to the mass ratio of 9:1, heating, stirring at 66 ℃, introducing ammonia gas, controlling the pH value to be 7.8, adding perfluorododecyl triethoxysilane, stirring for 13h, adding hydrogen chloride, and regulating the pH value to be 7.0 to obtain modified silicon dioxide;
(3) Preparation of modified polyurethane: mixing the obtained N, N-dimethylacetamide and tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(4) Preparation of composite fabric:
(1) butanone, an antioxidant, a coupling agent, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and a polypropylene fabric through an adhesive, and hot-rolling at the temperature of 100 ℃ and the pressure of 300kPa to obtain the composite fabric.
A waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
a preparation method of waterproof and corrosion-resistant composite fabric comprises the following specific steps,
and adhering the polytetrafluoroethylene composite film and the polypropylene fabric through an adhesive, and hot-rolling at the temperature of 100 ℃ and the pressure of 300kPa to obtain the composite fabric.
A waterproof and corrosion-resistant composite fabric is prepared from an outer polytetrafluoroethylene composite film and an inner polypropylene fabric;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises the following raw materials in parts by weight, namely 50 parts of polyurethane, 2 parts of antioxidant, 3 parts of light stabilizer and 3 parts of antibacterial agent.
The polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dibutyl acetamide and dibutyl tin dilaurate.
The N, N-dibutyl acetamide is prepared from 1, 2-bis (diphenylphosphino) ethane, di-N-butylamine, a catalyst, carbon dioxide and hydrogen.
A preparation method of waterproof and corrosion-resistant composite fabric comprises the following specific steps,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst and absolute ethyl alcohol, stirring uniformly, introducing hydrogen and carbon dioxide, heating and pressurizing for reaction for 12 hours to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol at 83 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of composite fabric:
(1) butanone, an antioxidant, a coupling agent, a light stabilizer and an antibacterial agent are added into the obtained polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and a polypropylene fabric through an adhesive, and hot-rolling at the temperature of 100 ℃ and the pressure of 300kPa to obtain the composite fabric.
Comparative examples 1,2 and 3 were set up by using example 3 as a control, wherein N, N-dimethylacetamide was added instead of N, N-dibutylacetamide in comparative example 1, modified polyurethane was not sprayed on polytetrafluoroethylene microporous membrane in comparative example 2, and modified silica was not added in comparative example 3, and a control experiment was performed.
The elongation at break control experiments were conducted in accordance with GB/T3923.1-1997, the air permeation tests were conducted in accordance with GB/T5453-1997, the water repellency was measured in accordance with AATCC22 Standard Water repellency test-spray method, the results are as follows,
| experimental group | Bacteriostasis rate (%) | Elongation at break (%) | Ventilation (mm/s) | Waterproof property |
| Example 1 | 96 | 36.86 | 3712 | 95 |
| Example 2 | 97 | 36.74 | 3741 | 100 |
| Example 3 | 95 | 36.89 | 3724 | 95 |
| Comparative example 1 | 83 | 36.72 | 3742 | / |
| Comparative example 2 | 81 | 23.62 | 3812 | / |
| ComparisonExample 3 | 93 | 26.79 | 3798 | / |
List one
The addition of N, N-dimethylacetamide instead of N, N-dibutylacetamide in comparative example 1 resulted in lower antibacterial rate of comparative example 1 relative to examples 1,2 and 3, because N, N-dibutyldiacetamide was used in the preparation process of examples 1,2 and 3, N-dibutyldiacetamide was prepared by di-N-butylamine, and di-N-butylamine was able to absorb part of isocyanato groups to form urea-type antibacterial agent, thereby achieving antibacterial effect.
The comparative example 2 does not spray modified polyurethane on polytetrafluoroethylene microporous membrane, resulting in lower antibacterial performance and elongation at break of comparative example 2 compared with those of example 1, example 2 and example 3, but higher air permeability compared with those of example 1, example 2 and example 3, because modified silica is contained in modified polyurethane added in example 1, example 2 and example 3, modified silica particles can improve the overall mechanical performance, urea antibacterial agent produced by reaction can improve the antibacterial performance of the product, but also can lead to lower porosity and further lower air permeability of the product cloth, so that uniform dispersion of modified silica is required to be ensured in the preparation process, and air permeability of the product cloth is further ensured.
The absence of the modified silica in comparative example 3 results in lower elongation at break of comparative example 3 relative to examples 1,2 and 3 and higher air permeability relative to examples 1,2 and 3, because the modified silica added in examples 1,2 and 3 has excellent mechanical properties, can increase the mechanical properties of the cloth of the product, but also correspondingly reduces air permeability.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present application, and the present application is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present application has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The waterproof corrosion-resistant composite fabric is characterized in that: the composite fabric is prepared from a polytetrafluoroethylene composite film at the outer layer and a polypropylene fabric at the inner layer;
the polytetrafluoroethylene composite membrane is prepared from a polytetrafluoroethylene microporous membrane and a polyurethane coating;
the polyurethane coating comprises, by weight, 40-50 parts of modified polyurethane, 1-2 parts of an antioxidant, 2-3 parts of a light stabilizer and 2-3 parts of an antibacterial agent.
2. The waterproof and corrosion-resistant composite fabric according to claim 1, wherein: the modified polyurethane is prepared from polyurethane, modified silicon dioxide and a solvent.
3. The waterproof and corrosion-resistant composite fabric according to claim 2, wherein: the polyurethane is prepared from polycarbonate diol, isophorone diisocyanate, N-dibutyl acetamide and dibutyl tin dilaurate.
4. The waterproof and corrosion-resistant composite fabric according to claim 2, wherein: the modified silicon dioxide is prepared from nano silicon dioxide and perfluorododecyl triethoxysilane.
5. The waterproof and corrosion-resistant composite fabric according to claim 2, wherein: the solvent is formed by mixing N, N-dibutyl acetamide and tetrahydrofuran.
6. The waterproof and corrosion-resistant composite fabric according to claim 5, wherein: the N, N-dibutyl acetamide is prepared from 1, 2-bis (diphenylphosphino) ethane, di-N-butylamine, a catalyst, carbon dioxide and hydrogen.
7. A preparation method of waterproof and corrosion-resistant composite fabric is characterized by comprising the following steps: the steps are as follows,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst, stirring uniformly, introducing hydrogen and carbon dioxide, heating and pressurizing to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of modified silica: adding a solvent into nano silicon dioxide, heating, stirring, introducing ammonia gas, controlling pH, adding perfluorododecyl triethoxysilane, stirring, adding hydrogen chloride, and regulating pH to obtain modified silicon dioxide;
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and the polypropylene fabric through an adhesive, and carrying out hot rolling to obtain the composite fabric.
8. The method for preparing the waterproof and corrosion-resistant composite fabric according to claim 7, which is characterized in that: the specific steps are as follows,
(1) Preparation of N, N-dibutylacetamide: mixing 1, 2-bis (diphenylphosphino) ethane and di-N-butylamine, putting into an autoclave, adding a catalyst and absolute ethyl alcohol, stirring uniformly, introducing hydrogen and carbon dioxide, and heating and pressurizing for reaction for 10-12 hours to obtain N, N-dibutylacetamide;
(2) Preparation of polyurethane: heating polycarbonate diol at 80-83 ℃, adding isophorone diisocyanate and dibutyltin dilaurate, stirring, and adding the obtained N, N-dibutylacetamide to obtain polyurethane;
(3) Preparation of modified silica: adding solvent into nano silicon dioxide, heating at 64-66 ℃, stirring, introducing ammonia gas, controlling pH to 7.6-7.8, adding perfluorododecyl triethoxysilane, stirring for 12-13h, adding hydrogen chloride, and regulating pH to 6.7-7.0 to obtain modified silicon dioxide;
(4) Preparation of modified polyurethane: mixing the obtained N, N-dibutyl acetamide with tetrahydrofuran, adding the obtained modified silicon dioxide, stirring, adding polyurethane, and performing ultrasonic dispersion to obtain modified polyurethane;
(5) Preparation of composite fabric:
(1) butanone, an antioxidant, a light stabilizer and an antibacterial agent are added into the obtained modified polyurethane, and the polyurethane coating is obtained after uniform stirring;
(2) uniformly coating the obtained polyurethane coating on a polytetrafluoroethylene microporous membrane, and drying to obtain a polytetrafluoroethylene composite membrane;
(3) and adhering the obtained polytetrafluoroethylene composite film and the polypropylene fabric through an adhesive, and carrying out hot rolling to obtain the composite fabric.
9. The method for preparing the waterproof and corrosion-resistant composite fabric according to claim 8, which is characterized in that: in the step (3), the solvent is prepared by mixing ethanol and deionized water according to the mass ratio of 8-9:1.
10. The method for preparing the waterproof and corrosion-resistant composite fabric according to claim 8, which is characterized in that: in the step (5), hot rolling is performed at a temperature of 80 to 100℃and a pressure of 200 to 300 kPa.
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