CN101104752A - Water-proof moisture-permeation coating agent composition and application thereof - Google Patents
Water-proof moisture-permeation coating agent composition and application thereof Download PDFInfo
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- CN101104752A CN101104752A CNA2007101454016A CN200710145401A CN101104752A CN 101104752 A CN101104752 A CN 101104752A CN A2007101454016 A CNA2007101454016 A CN A2007101454016A CN 200710145401 A CN200710145401 A CN 200710145401A CN 101104752 A CN101104752 A CN 101104752A
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Abstract
The invention relates to a waterproof and moisture-permeable coating agent composition, wherein, a certain amount of microporous lignocellulose fine powder is added into the coating agent with waterproof function, so that the coating agent has moisture permeable performance. The waterproof and moisture-permeable coating agent composition which is used as the coating agent for non-woven fabric, knitted fabric or woven fabric can be made into coated fabric and synthetic leather with waterproof and moisture permeable performances. Compared with the prior at, the invention has the advantages that: 1. the raw material is easy to be added, the process is available with high adaptability, no need to add new equipment; 2. on the premise that the waterproof performance is not decreased, the amount of moisture permeated is increased obviously and the anti-adhesion is improved; 3. the coated fabric and superfine fiber and artificial cover synthetic leather made by the invention has the advantages of fine moisture permeability, high resistance to water pressure and that the physical performance does not decrease.
Description
Technical field
The present invention relates to a kind of water-proof moisture-permeation coating agent composition and application thereof, mainly the fine powder of micropore ligno-cellulose is made an addition in the coating-forming agent, make coated fabric and synthetic leather material with waterproofing and moisture-penetration performances through applying.
Background technology
In the coating technology, be that the doing of representative/wet Technology plays huge pushing effect to exploitation Waterproof Breathable product with urethane.Be divided into three kinds of wet method, dry method and atresia coatings.Wet-process coating is that urethane is dissolved in the intensive polar solvent dimethyl formamide, be coated on the fabric after, form the microporous membrane of mutual perforation at solidification liquid generation inversion of phases.It is better that this method is made the water vapour permeability of fabric, but water pressure resistance is lower, and big and on the high side because of Amount of spread simultaneously, ageing-resistant performance is relatively poor.Dry coating has gel coating method, intumescent coating method and filling coating etc. multiple, and the key of this method is micropore control and useful life longevity, and water vapour permeability is relatively poor, can not satisfy basic Waterproof Breathable needs.The atresia dry coating is to contain hydrophilic radical or on its main chain hydrophilic component is arranged in the molecular structure with the polyurethanes coating-forming agent, after the coating oven dry, forms nonporous film.The thickness of this method controlling diaphragm is quite important, require to need more than 10 μ m to well from practicality.This kind fabric vapor transfer rate is still lower but at present.And synthetic leather usually adopts the wet process technique with superfine fibre nonwoven cloth impregnation urethane, make face after water vapour permeability descend significantly, compare with natural leather, water absorbability is on the low side, influences snugness of fit.
Application number is 200310120808.5 to be entitled as " waterproof, winter protection, saturating wet polyurethane coating cloth and production technique thereof " to have announced that a kind of coated fabric garment material, its purpose are exactly to solve in the market polyurethane coating to be difficult to satisfy the requirement to specific functions such as clothes waterproof, winter protection, water vapour permeabilitys of army and tourism gang.This coated fabric of invention, its raw material comprises fabricbase, WATER REPELLENT liquid, urethane mixed solution, and the urethane mixed solution in this invention divides two layers of coating, the first layer comprises urethane resin, dimethyl formamide, tensio-active agent, filler, it is basic to build bridge, and second layer urethane mixed solution comprises urethane resin, dimethyl formamide tensio-active agent and promotor.Tensio-active agent in this invention is fluorine surface-modifying agent or nonionic agent, and filler is a silicon-dioxide.Adopt this ventilation property of inventing prepared garment material to compare favourably with the breathing of human body skin, not only Wai Mian rainwater can not penetrate into, and also has good wind resistance thermal property, the most important thing is making gas soaked with sweat and can discharging of human body.
Application number is 97116329.4 to be entitled as in the invention of " manufacture method of synthetic water-absorption rubber cloth and products thereof " and to disclose a kind of synthetic water-absorption rubber cloth, synthetic cloth in this invention mixes natural rubber and cellulose powder and obtains by proper proportion, this synthetic rubber has higher water regain.Cellulose powder as can be seen from this invention, preferred microporous lignocellulose powder has the character of suction.
Summary of the invention
The purpose of this invention is to provide a kind of water-proof moisture-permeation coating agent composition, have the wet thoroughly function of excellent waterproof thereby make it be coated on scrim material.
Another object of the present invention provides the application of described water-proof moisture-permeation coating agent composition.
The invention provides a kind of water-proof moisture-permeation coating agent composition, wherein water-proof moisture-permeation coating agent composition is to add the fine powder of a certain amount of micropore ligno-cellulose in having the coating-forming agent of water-proof function.
Lignocellulose is meant that the main body composition is xylogen and cellulosic mixed powder, adopts wooden unit or wooden stalk core to pulverize usually and makes.Because the microvoid structure that wooden unit or wooden stalk core self have grinds the powder that the fine powder that forms is meant certain fineness simultaneously, the fine powder that fineness 80 orders are above, moreover the lignocellulose powder is natural materials and is suction and water insoluble.Therefore adopt the fine powder of micropore ligno-cellulose among the present invention to have the raising water vapour permeability, water vapor can see through coated fabric or synthetic leather by micropore.
The above-mentioned coating-forming agent with Waterproof Breathable function comprises a kind of in polyacrylate coating agent, polyurethane coating agent, natural rubber coating-forming agent, synthetic rubber coating-forming agent, SILICONE COATING AGENT, pvc coating agent, the polytetrafluorethylecoatings coatings agent.
Described coating-forming agent is a polyurethane coating agent.
The fine powder of described micropore ligno-cellulose comprises one or more the combination in the fine powder of hemp stalk core, the fine powder of jute stalk core, the fine powder of flax stalk core, the fine powder of sisal hemp stalk core, the fine powder of ramie stalk core, the fine powder of pine tree, the fine powder of China fir, the fine powder of cork and the fine powder of poplar.
The fine powder of described micropore ligno-cellulose is one or more the combination in the fine powder of hemp stalk core, the fine powder of jute stalk core, the fine powder of flax stalk core, the fine powder of sisal hemp stalk core, the fine powder of ramie stalk core.Because fibre of flax for textile material, fine powder as hemp, jute, flax, sisal hemp, ramie stalk has the microporosity of enriching and moisture absorption swelling property, has functional group simultaneously with the coating-forming agent reaction, wood fibre has the character of the crosslinked function of intensive, so be more suitable for being added in the coating-forming agent, form water-proof moisture-permeation coating agent composition.The water-repellancy of said composition and water vapour permeability are better than other coating agent composition that adds the fine powder of micropore ligno-cellulose.
The fine powder of above-mentioned micropore ligno-cellulose is that multistage pulverizing and wind filter are made by grinding.
Above-mentioned grinding is Raymond mill, ultra-fine mill or high pressure mill.
The fine powder of micropore ligno-cellulose is the 200-800 order.
The fine powder addition of described micropore ligno-cellulose is 5%～90% of a coating-forming agent solid content.
Another aspect of the present invention provides the application of described water-proof moisture-permeation coating agent composition, wherein described water-proof moisture-permeation coating agent composition is coated on the base cloth, makes coated fabric or synthetic leather with waterproofing and moisture-penetration performances.Above-mentioned base cloth is the fabric that certain brute force is arranged.
Described coating agent composition is coated on the base cloth by one or both methods in dry method, wet method, the transfer.
Described coating agent composition applies base cloth and comprises woven fabrics, knitted fabrics and non-woven fabrics.
Water-proof moisture-permeation coating agent composition provided by the present invention is a kind of water proof and moisture permeable material with the fine flour additive agent processing of micropore ligno-cellulose, wherein: adopt still have the fine powder of the hemp stalk core that enriches microvoid structure after the extra-fine grinding, combination that the fine powder of jute stalk core, the fine powder of flax stalk core, the fine powder of sisal hemp stalk core, the fine powder of ramie stalk core are made the fine powder of micropore ligno-cellulose and coating-forming agent, particularly polyurethane coating agent not only can be used for making coated fabric and can also be used to make ultra-fine fibre and make the face synthetic leather.Painted fabric with water-proof and drench qualities simutaneously vapor transfer rate 〉=the 3500g/m that obtains with this method
2D (according to dry agar diffusion method test among the GB/T12704-91), water pressure resistance is 35-120 kPa (pressing the GB4744-84 test), resistance to blocking obviously improves.Made ultra-fine fibre is made the water absorbability that the face synthetic leather makes than ordinary method and is improved more than 30%, and water pressure resistance improves more than 10%, and water vapour permeability improves more than 15%.
Compared with the prior art the present invention has following advantage:
1, the present invention adds simply, and feasible process is widely applicable, does not need to increase separately equipment.
2, the present invention has higher water vapour permeability, can significantly improve vapor transfer rate.
3, use coated fabric that the present invention makes and ultra-fine fibre to make the face synthetic leather and have and wet, the water pressure resistance height does not reduce the advantage of physicals.
Embodiment
Following examples are used to explain the present invention, do not limit the present invention.
Embodiment 1
A kind of water-proof moisture-permeation coating agent composition is to add the fine powder of 5 weight part flax stalk cores to obtain in the 95 weight part polyurethane coating agents coating agent composition.The fine powder of flax stalk core is the extra-fine grinding of flax stalk core process, two grade pulverization, and 800 orders that obtain behind the wind filter have the fine powder of the micropore ligno-cellulose that enriches microvoid structure.With above-mentioned water-proof moisture-permeation coating agent composition woven cloth is carried out dry coating, that is: at first woven cloth is carried out calendering, then, be applied to fabric face, making the waterproof moisture-penetrating urethane coated fabric through oven dry, volatilization etc. with above-mentioned polyurethane coating agent composition.
The physical index of the painted fabric with water-proof and drench qualities simutaneously of making is: brute force: T/W 750N/500N, tearing brute force: T/W35N/30N, quality: 〉=100g/m
2
Water pressure resistance 〉=the 60kPa of described waterproof moisture-penetrating urethane coated fabric, wash 20 times after 〉=30kPa, vapor transfer rate 〉=3500g/m
2The waterproof moisture-penetrating urethane coated fabric that the present invention makes has higher water vapour permeability, is suitable for making water-proof material, can significantly reduce feeling of oppression and heat on the basis that does not reduce physicals, increases snugness of fit.
Embodiment 2
The present invention is the waterproof moisture permeating fabric that adopts dry coating to make, water-proof moisture-permeation coating agent composition of the present invention as different from Example 1 is the polyacrylate coating agent that the fine powder of 20 weight part pine trees is added to 80 weight parts, what the base cloth of dry coating adopted is non-woven fabrics, the physical index of the painted fabric with water-proof and drench qualities simutaneously that makes is: brute force: T/W 730N/500N, tearing brute force: T/W 35N/30N, quality: 〉=90g/m
2Water pressure resistance 〉=the 40kPa of described waterproof moisture-penetrating urethane coated fabric, wash 20 times after 〉=30kPa, vapor transfer rate 〉=3000g/m
2The painted fabric with water-proof and drench qualities simutaneously that the present invention makes has higher water vapour permeability, is suitable for making water-proof material, can significantly reduce feeling of oppression and heat on the basis that does not reduce physicals, increases snugness of fit.
Embodiment 3
A kind of water-proof moisture-permeation coating agent composition is to add the fine powder of hemp stalk core to obtain in 10 parts of polyurethane coating agents coating agent composition for 90 parts.The fine powder of hemp stalk core is that hemp stalk core adopts Raymond mill to grind, and after three grades of pulverizing, 600 orders through wind filter have the fine powder of the micropore ligno-cellulose that enriches microvoid structure again.With above-mentioned water-proof moisture-permeation coating agent composition looped fabric is carried out wet-process coating, that is: at first use DMF (dimethyl formamide) that urethane is dissolved into solution, be coated in (or padding) on looped fabric, immerse in the water again, oven dry, solvent evaporation, washing scribbles the looped fabric of coating-forming agent, drying is carried out the back arrangement.
Water pressure resistance 〉=the 60kPa of described Waterproof Breathable polyacrylic ester, wash 20 times after 〉=30kPa, vapor transfer rate 〉=3500g/m
2The waterproof moisture-penetrating urethane coated fabric that the present invention makes has higher water vapour permeability and good texture, is suitable for making synthetic leather, as: imitative sheepskin or chamois leather, on the basis that does not reduce physicals, can significantly reduce feeling of oppression and heat, increase snugness of fit.
Embodiment 4
A kind of water-proof moisture-permeation coating agent composition, be to add the fine powder of 50 weight part ramie stalk cores to obtain in the 50 weight part natural rubber coating-forming agents coating agent composition, the fine powder of ramie stalk core is that ramie stalk core is through high pressure, three grades of pulverizing, 200 orders through wind filter have the fine powder of the micropore ligno-cellulose that enriches microvoid structure again.Carry out transfer coated with above-mentioned water-proof moisture-permeation coating agent composition to non-woven fabrics, that is: at first coating-forming agent is being coated on the flaky carrier, present embodiment adopts and makes it form successive, uniform film on the separate-type paper, thereby and then on film, coat binding agent and make coating-forming agent and non-woven fabrics superimposed, through oven dry and curing, segregation paper is peeled off, and the coating-forming agent film is just transferred on the non-woven fabrics, obtains painted fabric with water-proof and drench qualities simutaneously through aftertreatment again.
The natural rubber fabric that the present invention makes has higher water vapour permeability, is suitable for making raincoat, can significantly reduce feeling of oppression and heat on the basis that does not reduce physicals, increases snugness of fit.
Claims (10)
1. a water-proof moisture-permeation coating agent composition is characterized in that described water-proof moisture-permeation coating agent composition is to add the fine powder of micropore ligno-cellulose in having the coating-forming agent of water-proof function.
2. water-proof moisture-permeation coating agent composition according to claim 1, it is characterized in that described coating-forming agent comprises a kind of in polyacrylate coating agent, polyurethane coating agent, natural rubber coating-forming agent, synthetic rubber coating-forming agent, SILICONE COATING AGENT, pvc coating agent, the polytetrafluorethylecoatings coatings agent, preferred coating-forming agent is a polyurethane coating agent.
3. water-proof moisture-permeation coating agent composition according to claim 1, it is characterized in that the fine powder of described micropore ligno-cellulose comprises the fine powder of hemp stalk core, the fine powder of jute stalk core, the fine powder of flax stalk core, the fine powder of sisal hemp stalk core, the fine powder of ramie stalk core, the fine powder of pine tree, the fine powder of China fir, the combination of one or more in fine powder of cork and the fine powder of poplar, the preferred fine powder of micropore ligno-cellulose is the fine powder of hemp stalk core, the fine powder of jute stalk core, the fine powder of flax stalk core, the fine powder of sisal hemp stalk core, the combination of one or more in the fine powder of ramie stalk core.
4. water-proof moisture-permeation coating agent composition according to claim 1 is characterized in that the fine powder of described micropore ligno-cellulose is that multistage pulverizing and wind filter are made by grinding.
5. water-proof moisture-permeation coating agent composition according to claim 1 is characterized in that described grinding is Raymond mill, ultra-fine mill or high pressure mill.
6. water-proof moisture-permeation coating agent composition according to claim 1 is characterized in that the fine powder of described micropore ligno-cellulose is the 200-800 order.
7. water-proof moisture-permeation coating agent composition according to claim 1 is characterized in that the fine powder addition of described micropore ligno-cellulose is 5%～90% of a coating agent composition total mass.
8. water-proof moisture-permeation coating agent composition according to claim 1 is characterized in that described water-proof moisture-permeation coating agent composition is coated on the base cloth, makes coated fabric or synthetic leather with waterproofing and moisture-penetration performances.
9. water-proof moisture-permeation coating agent composition according to claim 7 is characterized in that described water-proof moisture-permeation coating agent composition is coated on the base cloth by one or both methods in dry method, wet method, the transfer.
10. water-proof moisture-permeation coating agent composition according to claim 8 is characterized in that described base cloth comprises woven cloth, looped fabric or non-woven fabrics.
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| CN2007101454016A CN101104752B (en) | 2007-09-10 | 2007-09-10 | Water-proof moisture-permeation coating agent composition and application thereof |
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| CN2007101454016A CN101104752B (en) | 2007-09-10 | 2007-09-10 | Water-proof moisture-permeation coating agent composition and application thereof |
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| CN101104752A true CN101104752A (en) | 2008-01-16 |
| CN101104752B CN101104752B (en) | 2012-06-06 |
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