Fluorine-containing organic silicon grafted copolymer as well as preparation method and application thereof

A graft copolymer and organosilicon technology, which is applied to the fluorine-containing organosilicon graft copolymer and the preparation method thereof and the application field in the surface coating, can solve the problems of large friction coefficient and low light transmittance, and achieves the The effect of excellent anti-fouling ability, good light transmittance and low coefficient of kinetic friction

Inactive Publication Date: 2014-12-03
JIANGSU NUOFEI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical problems, what the present invention is to solve is the problem of large dynamic friction coefficient and low light transmittance of fluorin

Method used

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  • Fluorine-containing organic silicon grafted copolymer as well as preparation method and application thereof
  • Fluorine-containing organic silicon grafted copolymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] This embodiment provides an organosilicon graft copolymer, and its specific preparation method is as follows:

[0027] In a 500ml four-neck flask, add 45g of the monomer to be polymerized A1, 50g of the monomer to be polymerized A2, and 5g of the monomer to be polymerized A3, add 100g of dipropylene glycol monomethyl ether to dissolve the above monomer to be polymerized, and add 2g of the initiator azobis Isobutyronitrile

[0028] Blow in nitrogen to reduce the oxygen content in the four-necked flask to below 500 ppm, raise the temperature to 80°C, and monitor the monomer conversion rate by gas chromatography after 18 hours of reaction. When the monomer conversion rate reaches 98%, the heating reaction is terminated.

[0029] A1 is polydimethylsiloxane containing mercapto group (XIAMETER OFS-2396), A2 is perfluoropolyether (meth)acrylate, and A3 is γ-(methacryloxy)propyltrimethoxysilane.

[0030] The fluorine-containing silicone graft copolymer was tested by g...

Example Embodiment

[0033] Example 2

[0034] This embodiment provides an organosilicon graft copolymer, and its specific preparation method is as follows:

[0035] Add 30g monomer to be polymerized A1, 65g monomer to be polymerized A2, 5g monomer to be polymerized A3 into a 500ml four-neck flask, and add 67g of a mixture of dipropylene glycol and tripropylene glycol with a mass ratio of 1:1 to dissolve the monomer to be polymerized , Add 3g initiator azobisisobutyronitrile;

[0036] Blow in nitrogen to reduce the oxygen content in the four-necked flask to below 500ppm, raise the temperature to 25°C, and after 18 hours of reaction, monitor the monomer conversion rate by gas chromatography. When the monomer conversion rate reaches 99%, the heating reaction is terminated.

[0037] A1 is polydimethylsiloxane containing acrylate (XIAMETER OFS-4246), A2 is perfluoropolyether (meth)acrylate, and A3 is γ-(methacryloxy)propyltrimethoxysilane .

[0038] The silicone graft copolymer was tested by gel permeation c...

Example Embodiment

[0040] Example 3

[0041] This embodiment provides an organosilicon graft copolymer, and its specific preparation method is as follows:

[0042] In a 500ml four-neck flask, add 20g monomer to be polymerized A1, 75g monomer to be polymerized A2, 5g monomer to be polymerized A3, add 100g dipropylene glycol monomethyl ether to dissolve the above monomer to be polymerized, add 0.2g initiator azo Diisobutyronitrile;

[0043] Blow in nitrogen to reduce the oxygen content in the four-necked flask to below 500 ppm. The temperature is raised to 110°C. After 18 hours of reaction, the monomer conversion rate is monitored by gas chromatography. When the monomer conversion rate reaches 98%, the heating reaction is terminated.

[0044] A1 is polydimethylsiloxane containing mercapto group (XIAMETER OFS-2397), A2 is perfluoropolyether (meth)acrylate, and A3 is γ-(methacryloxy)propyltrimethoxysilane.

[0045] The silicone graft copolymer was tested by gel permeation chromatography (Agilent A-1000), us...

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Abstract

The invention relates to a preparation method and application of a copolymer, and particularly relates to a fluorine-containing organic silicon grafted copolymer. The fluorine-containing organic silicon grafted copolymer is synthesized by polydimethylsiloxane with a sulfydryl and/or acrylate functional group, (methyl) acrylate with a perfluoropolyether functional group, and (methyl) acrylate with an alkyl siloxane functional group. A surface coating prepared by the fluorine-containing organic silicon grafted copolymer has relatively good light transmittance, a relatively low dynamic friction coefficient and relatively excellent pollution resistance. Especially, when the fluorine-containing organic silicon grafted copolymer is applied to a touch screen surface, the pollution resistance and decontamination capacity of the touch screen surface can be improved, the dynamic friction coefficient can be lowered, and good sense of touch and smoothness can be provided.

Description

technical field [0001] The invention relates to a preparation method and application of a copolymer, in particular to a fluorine-containing organosilicon graft copolymer, a preparation method thereof and application in surface coating. Background technique [0002] In the field of coatings, it is widely believed that hydrophobic coating films have self-cleaning properties, and many stain-resistant products have been developed on this basis, such as fluorosilicone-containing polymers. The fluorine-containing silicone polymer contains a large number of fluorine atoms with low surface energy, which can greatly reduce the surface energy of the material; when the stain falls on the surface of the fluorine-containing silicone polymer coating, the static contact angle of the stain increases , making stains easy to remove. [0003] However, the low surface energy materials containing fluorine silicon in the past have a large dynamic friction coefficient, especially when they are ap...

Claims

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Application Information

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IPC IPC(8): C08F291/14C08F291/06C08F230/08C08F283/12C09D151/08
Inventor 李娜邹玥
Owner JIANGSU NUOFEI NEW MATERIAL TECH
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