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Waterproof moisture-permeable film and preparation method thereof

A technology of waterproof and moisture-permeable membrane and moisture-permeable membrane, which is applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., and can solve problems such as uneven micropore structure, uneven micropore, complicated method and process, etc. , to achieve improved waterproof performance and moisture permeability, excellent moisture permeability and waterproof performance, and uniform microporous structure

Pending Publication Date: 2021-04-16
泉州市伊呗思谷化妆品科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the co-stretching method is that the thickness of the composite film is controllable and non-toxic, but the disadvantage is that the process is more complicated, so this method is still in the experimental state
The method for preparing the composite film provided in this patent often has poor adhesion between the polyurethane and the polytetrafluoroethylene base tape, which reduces the adhesion fastness of the composite film
However, the method for preparing composite membranes by stretching is complicated, and the prepared micropores are not uniform.
Therefore, the technical solution of the present invention mainly aims at the problems of poor bonding performance and low mechanical properties between composite materials in the prior art solution, and at the same time, the microporous structure is not uniform, and the moisture-permeable and waterproof performance is not good, and a waterproof and moisture-permeable membrane is prepared. and its preparation method

Method used

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  • Waterproof moisture-permeable film and preparation method thereof
  • Waterproof moisture-permeable film and preparation method thereof
  • Waterproof moisture-permeable film and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0037] S1. Preparation of the coating solution for the moisture-permeable membrane layer 10; stir and mix silk fibroin, calcium chloride, ethanol and deionized water and dialyze, collect the dialysate and compound it with polylactic acid and add it to dimethyl sulfoxide , stirred and mixed, and placed at room temperature for defoaming to obtain the coating solution for the moisture-permeable film layer 10;

[0038] S2, preparation of matrix fiber membrane; take TPU polyurethane and add to N,N-dimethylformamide to dissolve, collect matrix solution and add chitosan, lithium chloride and tetrabutylammonium chloride to it, stir Mixing and standing at room temperature for defoaming, collecting the spinning solution and performing electrospinning treatment to obtain a spinning matrix fiber film;

[0039] S3. Preparation of waterproof fiber membrane, the prepared base fiber membrane is placed in acetic acid solution, after standing for 6-8 hours, filtered and dried in an oven, and the ...

Embodiment 1

[0051] In parts by weight, weigh 10 parts of silk fibroin, 3 parts of calcium chloride, 6 parts of ethanol and 60 parts of deionized water, mix and dialyze, collect the dialysate and compound with polylactic acid and add to dimethyl In sulfoxide, stir and mix and place it at room temperature for defoaming to obtain the coating solution for the moisture-permeable film layer 10; take TPU polyurethane and add it to N,N-dimethylformamide to dissolve, collect the matrix solution and add In parts by weight, weigh 45 parts of matrix solution, 3 parts of chitosan, 0.01 part of lithium chloride and 0.5 part of tetrabutylammonium chloride, stir and mix and place it at room temperature for defoaming, and collect Spinning solution and electrospinning treatment, control the spinning voltage to 12kV, the spinning solution flow rate to 2mL / h, the receiving distance to 9cm, electrospinning and collecting the spun fibers to obtain the spinning matrix fiber film; the prepared matrix The fiber m...

Embodiment 2

[0053] In parts by weight, weigh 12 parts of silk fibroin, 4 parts of calcium chloride, 7 parts of ethanol and 70 parts of deionized water, stir and mix and dialyze, collect the dialysate and compound with polylactic acid and add to dimethyl In sulfoxide, stir and mix and place it at room temperature for defoaming to obtain the coating solution for the moisture-permeable film layer 10; take TPU polyurethane and add it to N,N-dimethylformamide to dissolve, collect the matrix solution and add In parts by weight, weigh 47 parts of matrix solution, 4 parts of chitosan, 0.01 part of lithium chloride and 0.7 part of tetrabutylammonium chloride, stir and mix and place it at room temperature for defoaming, and collect Spinning solution and electrospinning treatment, control spinning voltage to 13kV, spinning solution flow rate to 2mL / h, receiving distance to 10cm, electrospinning and collecting spun fibers to obtain spinning matrix fiber film; the prepared matrix The fiber membrane is...

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Abstract

The invention belongs to the technical field of waterproof films, and particularly relates to a waterproof moisture-permeable film and a preparation method thereof. The waterproof moisture-permeable film comprises multiple moisture-permeable film layers, wherein the moisture-permeable film layers are formed into a resin film piece, the moisture-permeable film layers are provided with pore channel structures penetrating through the moisture-permeable film layers in a thickness direction, and the pore channel structures are arranged in the moisture-permeable film layers at intervals along the extension direction of the axis of the moisture-permeable film layers; multiple waterproof film layers arranged on one side of the moisture-permeable film layers and form a resin film part, wherein through holes penetrating through the moisture-permeable film layers in the thickness direction of the moisture-permeable film layer are formed in the moisture-permeable film layer, and the through holes are arranged at equal intervals in the extending direction of the axis of the waterproof film layers. The waterproof and moisture-permeable membrane material disclosed by the embodiment of the invention is relatively good in bonding performance, high in mechanical property, uniform in microporous structure and excellent in moisture-permeable and waterproof performance.

Description

technical field [0001] The invention belongs to the technical field of waterproof films, in particular to a waterproof and moisture-permeable film and a preparation method thereof. Background technique [0002] Polymer films that are both waterproof and moisture-permeable and their laminated fabrics are called "breathable" fabrics. It can prevent water with a certain pressure or rain, snow, dew, etc. with a certain kinetic energy from penetrating or soaking the fabric, while the water vapor inside the fabric, such as human sweat vapor and other harmful gases, can be transmitted to the outside, thus reflecting waterproof and moisture permeability The comfort of fabrics such as clothing, tents, etc. With the development of the economy and the continuous improvement of living standards, people's demand for waterproof and moisture-permeable fabrics is increasing day by day, and the requirements for quality are also getting higher and higher. High-quality waterproof and breatha...

Claims

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Application Information

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IPC IPC(8): D06N3/00D04H1/728D04H3/02D06M13/188B32B27/02B32B27/40B32B27/12B32B33/00B32B3/24B32B37/00B32B38/16D06M101/38
Inventor 谷佑芽
Owner 泉州市伊呗思谷化妆品科技有限公司
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