Preparation method of acrylic resin / nano SIQ2 composite paint

A technology of acrylic resin and finishing agent, applied in the direction of coating, can solve the problems of poor weather resistance and solvent resistance, and achieve the effects of good hygienic performance, overcoming hot stickiness and cold brittleness, and soft film formation

Inactive Publication Date: 2005-08-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention introduces nanotechnology into the traditional tanning industry, and the addition of nanoparticles can greatly improve the physical and mechanical properties, water resistance, solvent resistance and hygienic performance of the leather-like coating after coating, which overcomes the traditional Acrylic resin has the common shortcomings of "hot stickiness and cold brittleness", poor weather resistance, and solvent resistance. It can obtain nano-composite coating agents with excellent adhesion and release performance, soft and transparent film formation, and good hygienic performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Example 1, take 15 parts by mass of pure ethyl orthosilicate, mix with 17 parts of absolute ethanol, and 1.0 parts of octadecyltrimethylammonium chloride, stir for 15 minutes, when the system temperature reaches 35 At ℃, add dropwise a mixed solution of 5 parts by mass of double-distilled water and 15 parts of absolute ethanol to the reaction system, adjust the pH to 9.0 with 1mol / L hydrochloric acid solution, and keep stirring at 35℃ for 1.2 hours , to obtain nano-silica sol; place the prepared nano-silica sol for 6 to 7 days, take 4% nano-silica sol and acrylic resin in a 30°C water bath, stir for 0.5 hours, and use Ultrasonic treatment with a power of 750W for 20 minutes to obtain acrylic resin / nano-SiO 2 Composite finish.

Embodiment 2

[0010] Example 2, take 20 parts by mass of pure ethyl orthosilicate, mix evenly with 16 parts of absolute ethanol, and 1.6 parts of octadecyltrimethylammonium chloride, stir for 20 minutes, when the system temperature reaches 42 At ℃, add dropwise a mixed solution of 6 parts by mass of double-distilled water and 17 parts of absolute ethanol to the reaction system, adjust the pH to 8.5 with 1mol / L hydrochloric acid solution, and keep stirring at 42℃ for 1.5 hours , to obtain nano-silica sol; place the prepared nano-silica sol for 6 to 7 days, take 6% nano-silica sol and acrylic resin in a water bath at 40°C, stir for 1.0 hour, and use Ultrasonic treatment with a power of 850W for 23 minutes to obtain acrylic resin / nano-SiO 2 Composite finish.

Embodiment 3

[0011] Example 3, take 18 parts by mass of pure ethyl silicate, mix with 15 parts of absolute ethanol, and 1.3 parts of octadecyltrimethylammonium chloride, stir for 23 minutes, when the system temperature reaches 37 At ℃, add dropwise a mixed solution of 5.2 parts by mass of double distilled water and 16 parts of absolute ethanol to the reaction system, and adjust the pH to 8.3 with 1mol / L hydrochloric acid solution, and keep stirring at 37℃ for 1.8 hours , to obtain nano-silica sol; place the prepared nano-silica sol for 6 to 7 days, take 5% nano-silica sol and acrylic resin in a 38°C water bath, stir for 1.5 hours, and use Ultrasonic treatment with a power of 800W for 21 minutes to obtain acrylic resin / nanometer SiO 2 Composite finish.

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PUM

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Abstract

A decorative composite acrylic resin / nano-SiO2 paint for leather is prepared from ethyl silicate and the mixture of absolute alcohol and ammonium octadecyltrimethyl chloride through mixing, stirring, heating to 35-45 deg.C, dropping the mixture of secondary distilled water and absolute alcohol, regulating pH=8-9, stirring to obtain nano-SiO2 sol, mixing with acrylic acid under water bath and ultrasonic treating.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite coating agent for leather, in particular to an acrylic resin / nanometer SiO 2 Preparation method of composite coating agent. Background technique [0002] The leather industry is closely related to human life and the development of the national economy, and is a pillar industry in the light industry. In recent years, the production and sales of my country's leather, fur and its products have been booming, with strong exports, and the export value has ranked first among all light industries for three consecutive years. However, there are still some problems in the rapid development of the leather industry, mainly due to the low added value of products (to give full play to comparative advantages and promote the sustainable and healthy development of the light industry (leather) industry, press conference for the 10th anniversary of the double king selection, economic operation of the Natio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D133/04
Inventor 马建中刘凌云胡静张志杰吕生华杨明来吕斌杨宗邃
Owner SHAANXI UNIV OF SCI & TECH
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