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High-performance self-cleaning organic silicon coating composition and preparation method thereof

A silicone coating, high-performance technology, applied in the field of coatings, can solve the problems of loss of mechanical properties, damage, biodegradation, and poor heat and aging resistance, and achieve improved biodegradation resistance, heat and aging resistance, and materials The surface is smooth and uniform, and the effect of broadening the antibacterial spectrum band

Active Publication Date: 2020-08-07
四川景文材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has certain effects in self-cleaning, antibacterial, formaldehyde removal, etc., but due to the compatibility problem between resins, the physical properties and weather resistance of the coating will not be improved but will be reduced.
[0003] Biodegradation and poor heat and aging resistance are the characteristics of organic resins. The prior art is to improve by adding antibacterial agents and ultraviolet absorbers, but local defects are caused by the migration of antibacterial agents and ultraviolet absorbers, thereby causing local damage; Moreover, the dispersibility and bonding performance of the resin itself, pigments, fillers, and inorganic fibers are not good, and it is necessary to add some additives to disperse and infiltrate well, but after the additives are used to disperse and infiltrate, it will cause the loss of mechanical properties.

Method used

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  • High-performance self-cleaning organic silicon coating composition and preparation method thereof
  • High-performance self-cleaning organic silicon coating composition and preparation method thereof
  • High-performance self-cleaning organic silicon coating composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of silicone resin emulsion

[0041] Capped multi-purpose adjustable antibacterial silicone resin 45 parts, complex emulsifier: 2.5 parts, deionized water: 52.5 parts.

[0042] Among them: end-capped multi-purpose adjustable antibacterial silicone resin is Where a is 4; b is 1; c is 6; n is 1; m is 1.

[0043] Composite emulsifier: cetyl ammonium bromide, octadecyl ammonium bromide, nonylphenol polyoxyethylene ether (EO=15-20), octylphenol polyoxyethylene ether (EO=15-20 ) of one or more mixtures.

[0044] Process:

[0045] Weigh and add deionized water into the dispersion container, heat to 45-50°C, add compound emulsifier, stir and disperse for 5 minutes at a stirring speed of 300 rpm, weigh the end-capped multi-purpose adjustable antibacterial silicone resin And heated to 45-50°C, then slowly added to the dispersion container, stirred and dispersed for 10 minutes at a stirring speed of 500 rpm, cooled to room temperature, and obtained.

[0046] (...

Embodiment 2-6

[0053] Compared with Example 1, Examples 2-6 are different except for the content of each component of silicone resin emulsion, cellulose ether, dispersant, wetting agent, film-forming aid, nano-rutile titanium dioxide, and nano-montmorillonite , all the other are the same as embodiment 1.

[0054] The content table of each component of table 1 embodiment 2-6

[0055]

Embodiment 7-12

[0057] Examples 7-12 are the same as Example 1 except that the end-capped multi-purpose adjustable antibacterial silicone resin is different from Example 1. The structure of the end-capped multipurpose adjustable antibacterial silicone resin is Wherein a is 1-10; b is 1-2; c is 1-10; n is 1, 2 or 3; m is 1, 2 or 3.

[0058] The specific values ​​of a, b, c, n and m in the multi-purpose adjustable antibacterial silicone resin of table 2 embodiment 7-12

[0059] Example a b c n m 7 4 1 6 2 2 8 4 2 6 3 2 9 3 1 7 2 2 10 6 1 4 2 2 11 6 1 4 3 2 12 6 2 4 2 2

[0060] Experimental part

[0061] Note: Hardness is tested according to GB / T 6739-2006; antibacterial rate is tested according to GB / T21866-2008; xenon lamp aging is tested according to GB / T16422.2-2014 / ISO 4892-2:2006; UV lamp aging (with or without yellowing) According to GB / T16422.3-2014 / ISO 4892-3:2006 test; the evaluation of stain resistance in sel...

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Abstract

The invention discloses a high-performance self-cleaning organic silicon coating composition and a preparation method thereof, and belongs to the technical field of coatings. The coating is prepared from, by weight, 450 to 500 parts of an organic silicon resin emulsion, 2 to 6 parts of cellulose ether, 0.5 to 3 parts of a dispersing agent, 0.5 to 2 parts of a wetting agent, 10 to 20 parts of a coalescing agent, 350 to 500 parts of nanometer rutile titanium dioxide and 80 to 120 parts of nanometer montmorillonite. The organic silicon resin nano-coating is applied to the surface of a base material in a coating manner, so the coating has biodegradation resistance, heat resistance, aging resistance, antibacterial property and bactericidal property; and in addition, the coating has a hydrophobic property, and uneven small holes and capillary holes which cannot be seen by naked eyes can be filled and leveled up by the coating, so that the surface of the composition is smooth and uniform, a strong repelling effect on water is also achieved, rainwater can form a lotus leaf effect on the surface of the coating, dust on the surface of the coating can be taken away by rolling of the rainwater, and the self-cleaning function is also achieved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a high-performance self-cleaning organic silicon coating composition and a preparation method thereof. Background technique [0002] At this stage, self-cleaning, formaldehyde-removing, antibacterial three-in-one or two-in-one coatings on the market are all obtained in the following ways: The first way is to use acrylate or other resins for silicone modification. This method is to graft a certain amount of silicone on the acrylate resin, which has a certain effect, but the modification is limited. The reason is that the main chain is a carbon chain instead of silicone, and its weather resistance is limited. The branches are limited, and its self-cleaning, formaldehyde removal, and antibacterial capabilities are limited; the second method is to physically mix acrylic resin and silicone resin. This method has certain effects in self-cleaning, antibacterial, and formal...

Claims

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Application Information

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IPC IPC(8): C09D183/10C09D5/14C09D5/16C09D7/61C09D7/65C08G77/388C08G77/452
CPCC08G77/388C08G77/452C08K2003/2241C08K2201/011C08L2201/06C08L2201/08C09D5/14C09D5/1681C09D5/1687C09D183/10C08L1/28C08K3/22C08K3/346
Inventor 王兴财王玉树王森王鑫
Owner 四川景文材料科技有限公司
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