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A kind of layered membrane structure acid-proof moisture-permeable fabric and preparation method thereof

A membrane structure, anti-acid technology, applied in the direction of plant fibers, textiles and papermaking, filament/thread forming, etc., to achieve good moisture permeability, prevent acid penetration and corrosion of fabrics, and comfortable experience

Active Publication Date: 2019-10-18
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the protective fabrics in the prior art that the anti-acid protection performance and breathable and moisture-permeable performance cannot be combined at the same time, and provide a layered membrane structure with good acid-proof protection performance and comfortable performance. The fabric and its preparation method are specifically introduced into the surface of the fabric by simultaneously introducing pitch fiber membrane and fluorine-containing polyurethane / polyurethane composite fiber membrane, and designing it into a hierarchical structure to obtain excellent anti-acid performance. At the same time, because the fabric surface membrane has a special pore structure, It can effectively prevent the penetration of acid liquid and ensure the penetration of gaseous water molecules, so the fabric has excellent acid resistance and good moisture permeability

Method used

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  • A kind of layered membrane structure acid-proof moisture-permeable fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A method for preparing an acid-proof and moisture-permeable fabric with a hierarchical membrane structure, the steps are as follows:

[0043] (1) Preparation of fluorine-containing polyurethane:

[0044] 1) the TEOH-8 solution that concentration is 52.8wt% and the MDI solution that concentration is 52wt% are mixed at 50 ℃ and carry out the prepolymerization reaction I of 2h to obtain fluorine-containing prepolymer, wherein the solvent of TEOH-8 solution and MDI solution Both are DMF, and the molar ratio of TEOH-8 and MDI in the system at the beginning of the reaction is 1:2;

[0045] 2) Add PTMG 2000 at 60°C for 2 hours of prepolymerization II to obtain a fluorine-containing polyurethane prepolymer. The molar ratio of TEOH-8 added in step 1) to PTMG 2000 added in this step is 1:0.3;

[0046] 3) Add TEG for chain extension and end-capping reaction, wherein the temperature of chain extension and end-capping reaction is 75°C, the time is 2h, and the molar ratio of TEOH-8 ...

Embodiment 2

[0084] A method for preparing an acid-proof and moisture-permeable fabric with a hierarchical membrane structure, the steps are as follows:

[0085] (1) Preparation of fluorine-containing polyurethane:

[0086] 1) the TEOH-8 solution that concentration is 54.6wt% and the MDI solution that concentration is 50wt% mix the prepolymerization reaction I that carries out 2h at 50 ℃ to obtain fluorine-containing prepolymer, wherein the solvent of TEOH-8 solution and MDI solution Both are DMF, and the molar ratio of TEOH-8 and MDI in the system at the beginning of the reaction is 1:2;

[0087] 2) Add PTMG 2000 at 60°C for 2 hours of prepolymerization II to obtain a fluorine-containing polyurethane prepolymer. The molar ratio of TEOH-8 added in step 1) to PTMG 2000 added in this step is 1:0.3;

[0088] 3) Add BDO for chain extension and end-capping reaction, wherein the temperature of chain extension and end-capping reaction is 75°C, the time is 2h, and the molar ratio of TEOH-8 added ...

Embodiment 3

[0096] A method for preparing an acid-proof and moisture-permeable fabric with a hierarchical membrane structure, the steps are as follows:

[0097] (1) Preparation of fluorine-containing polyurethane:

[0098] 1) the TEOH-8 solution that concentration is 53.7wt% and the MDI solution that concentration is 51wt% are mixed at 50 ℃ and carry out the prepolymerization reaction I of 2h to obtain fluorine-containing prepolymer, wherein the solvent of TEOH-8 solution and MDI solution Both are DMF, and the molar ratio of TEOH-8 and MDI in the system at the beginning of the reaction is 1:2;

[0099] 2) Add PTMG 2000 at 60°C for 2 hours of prepolymerization II to obtain a fluorine-containing polyurethane prepolymer. The molar ratio of TEOH-8 added in step 1) to PTMG 2000 added in this step is 1:0.3;

[0100] 3) Add TEG for chain extension and end-capping reaction, wherein the temperature of chain extension and end-capping reaction is 75°C, the time is 2h, and the molar ratio of TEOH-8 ...

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Abstract

The invention relates to a layered membrane structure acidproof and moisture-permeable fabric and a preparation method thereof. The preparation method comprises the following step: alternately electrospinning an asphalt fiber membrane and a fluorinated polyurethane / polyurethane composite fiber membrane in sequence on the surface of base cloth, wherein an adhesive is sprayed onto the surface of a receiving substrate before electrospinning each time, the finally prepared fabric is of a multilayered structure formed by the base cloth, the asphalt fiber membrane and the fluorinated polyurethane / polyurethane composite fiber membrane, the asphalt fiber membrane is deposited on the surface of the base cloth or the surfaces of the base cloth and the fluorinated polyurethane / polyurethane compositefiber membrane, and the fluorinated polyurethane / polyurethane composite fiber membrane is deposited on the surface of the asphalt fiber membrane. According to the prepared method of the layered membrane structure acidproof and moisture-permeable fabric, the barrier performance of the fabric for acid liquor is improved, the adhesion and infiltration resistance of the fabric for droplets is improved, the protection performance and the comfortability of the acidproof fabric are both considered, and the prepared fabric has high acidproof protection performance and comfortability.

Description

technical field [0001] The invention belongs to the field of anti-acid protection, and in particular relates to an acid-proof and moisture-permeable fabric with a layered membrane structure and a preparation method thereof. Background technique [0002] At present, the consumption of triacids in my country has exceeded 300,000 tons, and relevant practitioners must wear protective clothing to ensure safe and orderly production. The protective clothing on the market is generally made after acid-proof finishing of fabrics. The acid-proof finishing of fabrics occurs in the post-finishing stage of textiles. Through fabric finishing, the acid-proof finishing agent is grafted, attached or deposited on the surface of the fabric, and formed on the surface of the fabric. The acid-resistant and acid-proof protective layer has a certain fastness, so that the fabric can obtain sufficient acid resistance and acid resistance. [0003] The common anti-acid finishing methods of fabrics incl...

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 Patents(China)
IPC IPC(8): D06M17/00D06M17/06D01D5/00D06M101/32D06M101/06D06M101/38
Inventor 夏鑫李智勇邵一卿赵杰文
Owner XINJIANG UNIVERSITY