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Water-proof moisture-permeation coating agent composition and application thereof

A waterproof, moisture-permeable, and coating agent technology, which is applied in the field of coated fabrics and synthetic leather materials, and can solve the problems that are difficult to meet the requirements of special functions such as waterproof, cold-proof, and moisture-permeable properties of clothing, affect wearing comfort, and reduce moisture-permeable performance. problem, to achieve the effect of feasible process, improved water pressure resistance and improved moisture permeability

Inactive Publication Date: 2008-01-16
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, the moisture permeability of such fabrics is still low
Synthetic leather usually adopts the wet production process of impregnating polyurethane with ultra-fine fiber non-woven fabric, and the moisture permeability after surface making is greatly reduced. Compared with natural leather, the hygroscopicity is low, which affects wearing comfort.
[0003] The application number is 200310120808.5 titled "Waterproof, cold-proof, moisture-permeable polyurethane coated cloth and its production process" announced a kind of coated cloth clothing fabric, its purpose is to solve the polyurethane coating currently on the market is difficult to meet the needs of the army and tourists Requirements for special functions of clothing such as waterproof, cold protection, and moisture permeability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A waterproof and moisture-permeable coating agent composition is a coating agent composition obtained by adding 5 parts by weight of flax stalk core fine powder to 95 parts by weight of a polyurethane coating agent. Flax stalk fine powder is 800 mesh microporous lignocellulose fine powder with rich microporous structure obtained after flax stalk ultrafine grinding, secondary crushing and wind screening. Use the above-mentioned waterproof and moisture-permeable coating agent composition to carry out dry coating on the woven fabric, that is: firstly, the woven fabric is calendered, and then the above-mentioned polyurethane coating agent composition is applied to the surface of the fabric. Drying, volatilization, etc. to make waterproof and moisture-permeable polyurethane coated fabrics.

[0028] The physical indicators of the waterproof and moisture-permeable coated fabric are: strength: T / W 750N / 500N, tear strength: T / W35N / 30N, quality: ≥100g / m 2 .

[0029] The water p...

Embodiment 2

[0031] The present invention is a waterproof and moisture-permeable fabric prepared by dry coating. The difference from Example 1 is that the waterproof and moisture-permeable coating agent composition of the present invention is that 20 parts by weight of pine fine powder are added to 80 parts by weight of polyacrylic acid Ester coating agent, the base fabric of dry coating is non-woven fabric, the physical index of the waterproof and moisture-permeable coating fabric is: strength: T / W 730N / 500N, tear strength: T / W 35N / 30N, mass: ≥90g / m 2 . The water pressure resistance of the waterproof and moisture-permeable polyurethane coated fabric is ≥ 40kPa, after washing 20 times ≥ 30kPa, and the moisture permeability is ≥ 3000g / m 2 . The waterproof and moisture-permeable coated fabric produced by the invention has high moisture-permeability, is suitable for making waterproof materials, can obviously reduce stuffiness and increase wearing comfort without reducing physical propertie...

Embodiment 3

[0033] A waterproof and moisture-permeable coating agent composition, which is obtained by adding 90 parts of hemp stalk core fine powder to 10 parts of polyurethane coating agent. Hemp stalk core fine powder is 600-mesh microporous lignocellulose fine powder with rich microporous structure after hemp stalk core is ground by Raymond mill, after three-stage crushing, and then wind-screened. Use the above-mentioned waterproof and moisture-permeable coating agent composition to carry out wet coating to the knitted fabric, that is: first use DMF (dimethylformamide) to dissolve the polyurethane into a solution, apply (or pad) on the knitted fabric, Immerse in water again, dry, evaporate the solvent, wash the knitted fabric coated with the coating agent, dry, and carry out after-finishing.

[0034] The waterproof and moisture-permeable polyacrylate has a water pressure resistance ≥ 60kPa, after washing 20 times ≥ 30kPa, and a moisture permeability ≥ 3500g / m 2 . The waterproof and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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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 [0001] The invention relates to a waterproof and moisture-permeable coating agent composition and its application. Microporous lignocellulose fine powder is mainly added to the coating agent, and coated fabric and synthetic leather with waterproof and moisture-permeable performance are made after coating Material. Background technique [0002] In the coating technology, the dry / wet process technology represented by polyurethane has played a huge role in promoting the development of waterproof and moisture-permeable products. It is divided into three types: wet method, dry method and non-porous coating. Wet coating is to dissolve polyurethane in a strong polar solvent dimethyl formamide, and after coating on the fabric, the coagulation liquid undergoes phase inversion to form interpenetrating microporous films. The moisture permeability of the fabric made by this method is good, but the water pressure resistance is low, and the price is high due to the large...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D133/08C09D175/04C09D107/00C09D183/00C09D127/06C09D127/18D06N3/00
Inventor 郝新敏梁高勇张建春
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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