A kind of preparation method and application of nano silicon dioxide-fluorine-containing polyacrylate composite matting agent

A technology of nano-silica and polyacrylate, applied in biocide-containing paints, conductive coatings, coatings, etc., can solve the problems of anti-adhesive performance to be improved, achieve high surface resistance, improve anti-adhesive performance, and high The effect of abrasion resistance

Active Publication Date: 2021-11-19
虎丘影像(苏州)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing commercially available coatings still cannot meet the market requirements, and the anti-adhesive performance needs to be improved.

Method used

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  • A kind of preparation method and application of nano silicon dioxide-fluorine-containing polyacrylate composite matting agent
  • A kind of preparation method and application of nano silicon dioxide-fluorine-containing polyacrylate composite matting agent
  • A kind of preparation method and application of nano silicon dioxide-fluorine-containing polyacrylate composite matting agent

Examples

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preparation example Construction

[0025] The present invention provides a kind of preparation method of nano silicon dioxide-fluorine-containing polyacrylate composite matting agent, comprising the following steps:

[0026] nano-SiO 2 , anhydrous ethanol, water, ammonia water and silane coupling agent react to obtain modified nano-SiO 2 ;

[0027] Mix part of emulsifier aqueous solution, part of fluorine-containing acrylate, part of acrylate and part of acrylamide, and pre-emulsify to obtain a pre-emulsion;

[0028] The remaining part of emulsifier aqueous solution, the remaining part of fluorine-containing acrylate, the remaining part of acrylate, the remaining part of acrylamide and modified nano-SiO 2 Mixing, adding an initiator, reacting, adding the pre-emulsion dropwise to continue the reaction, adjusting the pH value to 7-8, and obtaining a nano-silica-fluorine-containing polyacrylate composite matting agent.

[0029] The present invention adopts fluorine-containing ethyl acrylate, acrylate and acryla...

Embodiment 1

[0057] Example 1 Modified nano silicon dioxide n-SiO 2 - Preparation of F1

[0058] In a 250ml flask, add 8.0g dry nano-SiO 2 Particles, 160ml of absolute ethanol, 10mL of deionized water, 4g of 25% ammonia water and 3g of fluorine-containing alkoxysilane (3,3,3-trifluoropropyl)trimethoxysilane. Ultrasonic dispersion was performed for 1 hour, and high-speed stirring was performed at room temperature for 24 hours. Filter the precipitate, wash with 10 mL of absolute ethanol three times, remove unreacted alkoxysilane, etc., and dry in vacuum to obtain white powder n-SiO 2 -F1.

Embodiment 2

[0059] Example 2: Modified nano silicon dioxide n-SiO 2 - Preparation of F2

[0060] In a 250ml flask, add 8.0g dry nano-SiO 2 Particles, 150ml of absolute ethanol, 10mL of deionized water, 4g of 25% ammonia water and 3g of fluorine-containing alkoxysilane trifluoropropyltriethoxysilane. Ultrasonic dispersion was performed for 1 hour, and high-speed stirring was performed at room temperature for 24 hours. Filter the precipitate, wash with 10 mL of absolute ethanol three times, remove unreacted alkoxysilane, etc., and dry in vacuum to obtain white powder n-SiO 2 -F2.

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Abstract

The invention provides a preparation method and application of a nano-silica-fluorine-containing polyacrylate composite matting agent, the method comprising: mixing nano-SiO 2 , anhydrous ethanol, water, ammonia water and silane coupling agent react to obtain modified nano-SiO 2 ; Part of the emulsifier aqueous solution, part of the fluorine-containing acrylate, part of the acrylate and part of the acrylamide are mixed and pre-emulsified to obtain a pre-emulsion; the remaining part of the emulsifier aqueous solution, the remaining part of the fluorine-containing acrylate, the remaining part of the acrylate, and the remaining Part of acrylamide and modified nano-SiO 2 Mixing, adding an initiator, reacting, adding the pre-emulsion liquid dropwise to continue the reaction, adjusting the pH value to 7-8 to obtain a composite matting agent. The composite matting agent has good anti-adhesive properties; antistatic, hydrophobic, anti-ultraviolet aging, weather resistance, high surface resistance and wear resistance. Coated on film and other products to endow it with special functions such as antibacterial and self-cleaning, it has practical application prospects.

Description

technical field [0001] The invention belongs to the technical field of medical film coating, and in particular relates to a preparation method and application of a nano silicon dioxide-fluorine-containing polyacrylate composite matting agent. Background technique [0002] People who collect, play with, and use old cameras will naturally use photosensitive materials such as film, film, and photo paper. Improper storage of photosensitive materials will also cause adhesion, mildew, uneven sensitivity, and images of numbers on the back of the paper appear on the screen. (the film is damp and sticks to the backing paper) and so on, even the newly shipped film will be damp and moldy within the validity period. [0003] Anti-blocking performance is one of the important physical and chemical indicators in the film making process, and the use of coatings can prevent the film from sticking. However, the existing commercially available coatings still cannot meet the market requirement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/16C09D133/10C09D7/62C09D5/14C09D5/24C08F220/24C08F220/18C08F220/54
CPCC08F220/24C08K2201/011C09D5/14C09D5/24C09D133/24C09D7/62C08F220/1802C08K9/06C08K3/36C08F220/54
Inventor 宋拥军伍锡焱
Owner 虎丘影像(苏州)股份有限公司
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