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Hydrophilic film and preparation method thereof

A hydrophilic film and hydrophilic technology, applied in the direction of coating, etc., can solve the problems of unsatisfactory water absorption and water retention rate of the hydrophilic film, difficult to obtain comprehensive performance, unfavorable fit, etc., to achieve good water absorption, high Good water retention and fit

Active Publication Date: 2022-03-11
NINGBO SOKEN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrophilic membrane described in this invention still has the following disadvantages: within the scope of the formula, when the water absorption and water retention of the hydrophilic membrane are better, the elastic modulus is slightly larger, and the product is relatively hard, which is not conducive to When the elastic modulus is moderate, the water absorption and water retention of the hydrophilic film are not ideal
In short, it is not easy to obtain products with ideal comprehensive performance.

Method used

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  • Hydrophilic film and preparation method thereof
  • Hydrophilic film and preparation method thereof
  • Hydrophilic film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the hydrophilic fiber membrane: mix 40 parts of cornstarch resin, 20 parts of polybutylene succinate, 10 parts of polyethylene succinate, and 1 part of cyanoguanidine, and then melt extrude at 200 ° C. The blown film is solidified and formed to obtain the desired hydrophilic fiber film.

[0027] Preparation method of hydrophilic coating: Add 20 parts of PVA to 30 parts of deionized water, then stir and dissolve completely at 70°C, cool to room temperature, add the solution to SK-1170, and emulsify for half an hour to obtain the required hydrophilic coating coating.

[0028] The preparation method of the hydrophilic membrane: uniformly coat the hydrophilic coating prepared above on the hydrophilic fiber membrane with a coating thickness of 1-10 μm, and dry it in a 60° C. drying oven for 3 minutes to obtain the desired hydrophilic membrane.

Embodiment 2

[0030] The preparation method of the hydrophilic fiber membrane: mix 50 parts of cornstarch resin, 30 parts of polybutylene succinate, 15 parts of polyethylene succinate, and 4 parts of cyanoguanidine, and then melt extrude at 200 ° C. The blown film is solidified and formed to obtain the desired hydrophilic fiber film.

[0031] Preparation method of hydrophilic coating: add 30 parts of PVA to 30 parts of deionized water, then stir and dissolve completely at 70°C, cool to room temperature, add the solution to SK-1170, and emulsify for half an hour to obtain the desired hydrophilic coating. water paint.

[0032] The preparation method of the hydrophilic membrane: uniformly coat the hydrophilic coating prepared above on the hydrophilic fiber membrane with a coating thickness of 1-10 μm, and dry it in a 60° C. drying oven for 3 minutes to obtain the desired hydrophilic membrane.

Embodiment 3

[0034] The preparation method of the hydrophilic fiber membrane: mix 60 parts of cornstarch resin, 25 parts of polybutylene succinate, 20 parts of polyethylene succinate, and 2 parts of cyanoguanidine, and then melt extrude at 200 ° C. The blown film is solidified and formed to obtain the desired hydrophilic fiber film.

[0035] Preparation method of hydrophilic coating: add 25 parts of PVA to 30 parts of deionized water, then stir and dissolve completely at 70°C, cool to room temperature, add the solution to SK-1170, and emulsify for half an hour to obtain the desired hydrophilic coating. water paint.

[0036] The preparation method of the hydrophilic membrane: uniformly coat the hydrophilic coating prepared above on the hydrophilic fiber membrane with a coating thickness of 1-10 μm, and dry it in a 60° C. drying oven for 3 minutes to obtain the desired hydrophilic membrane.

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Abstract

The invention discloses a hydrophilic membrane. The hydrophilic membrane comprises a hydrophilic fiber membrane and a hydrophilic coating coated on the hydrophilic fiber membrane, wherein the hydrophilic fiber membrane is prepared from 40 to 60 parts of corn starch resin, 20 to 30 parts of poly (butylene succinate), 10 to 20 parts of poly (ethylene glycol succinate) and 1 to 4 parts of cyanoguanidine; the hydrophilic coating is formed by coating a hydrophilic coating prepared from 100 parts of an acrylic copolymer, 30-50 parts of deionized water and 20-30 parts of PVA on the hydrophilic fiber membrane. Compared with the prior art, the hydrophilic film disclosed by the invention has the advantages of moderate elastic modulus, good skin fitness, good water absorption rate, higher water retention rate and degradability.

Description

technical field [0001] The invention relates to the technical field of hydrophilic materials, in particular to a hydrophilic film material applicable to high-grade cosmetics and a preparation method thereof. Background technique [0002] As we all know, at present, facial masks, diapers, sanitary napkins, sanitary napkins and other sanitary products all use super absorbent resin (SAP) as absorbent. These substances are able to absorb liquids several times their mass and are therefore widely used. However, the water retention rate of these materials is not ideal, and it dries quickly after absorbing water, so it is not suitable for mask products; in addition, these materials are synthesized by chemical methods using polymer resins, which are prone to allergic reactions to the skin, and SAP can also produce toxic shock Syndrome health issues, besides; these materials are not biodegradable, under ideal conditions, a face mask takes 100 years to degrade and a diaper takes 500 y...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/056C08J7/04C08J5/18C08L3/02C08L67/02C09D133/00C09D129/04
CPCC08J7/056C08J7/0427C08J5/18C09D133/00C08J2303/02C08J2467/02C08J2433/00C08L29/04
Inventor 江健波纪照辉吴苗苗
Owner NINGBO SOKEN CHEM
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