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Nano waterproof breathable film and preparation method thereof

A waterproof and breathable film, nanotechnology, applied in the field of waterproof and breathable materials for sanitary products, can solve the problem of stuffy sanitary products and other problems, and achieve the effect of low price of experimental raw materials, high tensile strength and mild reaction conditions

Inactive Publication Date: 2016-09-28
崔建中
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The key to waterproof and breathable membranes is the size and number of micropores. At present, the waterproof membranes used in sanitary products worldwide are all polyethylene films with almost no breathable effect. They are said to be breathable, but most of them are in the state of high temperature, high humidity and high pressure. A small amount of breathability can be achieved only when the temperature is low, and it is impossible to solve the stuffy problem of sanitary products in actual use.

Method used

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  • Nano waterproof breathable film and preparation method thereof
  • Nano waterproof breathable film and preparation method thereof
  • Nano waterproof breathable film and preparation method thereof

Examples

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Embodiment 1

[0024] The preferred embodiment 1 of the present invention provides a nano waterproof and breathable membrane, the raw material components of which are shown in Table 1, wherein the plasticizer is thermoplastic elastomer, and the lubricant is chlorinated polyethylene.

[0025] The preparation method of above-mentioned nano waterproof gas-permeable film, comprises the steps:

[0026] Step [1] Add corresponding parts by weight of nano-titanium dioxide particles into absolute ethanol, and disperse them with ultrasonic waves at room temperature for 20 to 30 minutes to fully disperse nano-titanium dioxide to form an ethanol dispersion system; lecithin, ethyl orthosilicate, Add 2-hydroxysuccinic acid to 8-12mL of chloroform / ethanol mixed solvent, add it to the ethanol dispersion system after fully dissolving and mixing, then continue ultrasonication for 0.5-1.5 hours at about 30°C, at 35°C The product A obtained by evaporating the solvent to dryness, then adding the starch into deio...

Embodiment 2

[0035] The preferred embodiment 2 of the present invention provides a nano waterproof and breathable membrane, the raw material components of which are shown in Table 1, wherein the plasticizer is thermoplastic elastomer, and the lubricant is chlorinated polyethylene.

[0036] The preparation method of the above-mentioned nano waterproof and breathable membrane, step [1] to step [3] are the same as in Example 1, and the step [4] is: combine all the prepared nanofibers with half of the prepared core / shell structure The particles are evenly mixed and spread into a film layer with a certain thickness, and then hot-pressed at 40-50°C, after hot pressing, the other half of the core / shell structure particles are evenly spread on the hot-pressed film layer, and then The film layer is dried by infrared drying equipment at 80° C. to finally obtain the nanometer waterproof and breathable film.

Embodiment 3

[0038] The preferred embodiment 3 of the present invention provides a nano waterproof and breathable membrane, the raw material components of which are shown in Table 1, and the preparation method is the same as that of the embodiment 1.

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Abstract

The invention provides a nano waterproof breathable film, made from the following materials in percent by weight: 30-35% of low-density polyethylene, 15-20% of linear polyethylene, 12-18% of polylactic acid, 2-6% of hydroxyethyl cellulose, 11-16% of starch, 0.6-0.8 part of nano titanium dioxide, 10-15% of lecithin, 2-5% of tetraethyl orthosilicate, 3-8% of 2-hydroxysuccinic acid, 10-15% of polyvinyl alcohol, 2-10% of a plasticizer, and 2-10% of a lubricant. In connection with the preparation method provided herein, the waterproof breathable nano film can be produced; the film is imparted good water resistance and breathability; the produced nano film is light and thin, soft to touch, high in tensile strength and suitable for use as a surface material for sanitary products.

Description

technical field [0001] The invention relates to a special waterproof and breathable material for sanitary products, in particular to a nanometer waterproof and breathable membrane and a preparation method thereof. Background technique [0002] With the continuous development of society and the improvement of people's living needs, waterproof and breathable membranes play a vital role in sanitary products. For example, sanitary napkins, as a special care product for women with liquid absorption, the performance of the surface material directly affects the user experience. The surface of existing ordinary sanitary napkins is designed to absorb water, so that women can quickly absorb body fluids when using sanitary napkins during their menstrual period, so that body fluids will not overflow and pollute underwear. The back of ordinary sanitary napkins is waterproof and has poor air permeability. When used, it is often accompanied by symptoms such as dampness and stuffiness, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L67/04C08L1/28C08L3/02C08L29/04C08L23/28C08K13/02C08K3/22C08K5/092C08K5/5415
CPCC08L23/06C08J5/18C08J2323/06C08K2201/011C08L2205/025C08L2205/035C08L2205/16C08L2207/04C08L67/04C08L1/284C08L3/02C08L29/04C08L101/00C08L23/286C08K13/02C08K2003/2241C08K5/092C08K5/5415
Inventor 崔建中徐逢滨
Owner 崔建中
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