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A high-performance self-cleaning silicone coating composition and its preparation method

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

Active Publication Date: 2021-08-27
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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  • A high-performance self-cleaning silicone coating composition and its preparation method
  • A high-performance self-cleaning silicone coating composition and its preparation method
  • A high-performance self-cleaning silicone coating composition and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Preparation of silicone resin emulsion

[0041] The closed multi-purpose can regulate 45 parts of antibacterial silicone resin, composite emulsifier: 2.5 parts, deionized water: 52.5 parts.

[0042] Among them: the closed multi-purpose adjustable antimicrobial silicone resin is Where A is 4; B is 1; C is 6; n is 1; M is 1.

[0043] Composite emulsifier: is ammonium censoetalac bromide, ammonium bromide, nonylphenol polyoxyethylene ether (EO = 15-20), octylphenol polyoxyethylene ether (EO = 15-20 One or more mixtures.

[0044] Process:

[0045] Add the deionized water to the dispersion container, heated to 45-50 ° C, add a composite emulsifier, stirred at 300 rpm of stirring at a stirring rate of 300 min, weighing the seal multi-purpose adjustable antimicrobial silicone resin And heated to 45-50 ° C, then slowly added to the dispersed container, stirred at a stirring rate of 500 rpm of MIN at a stirring rate of 10 min, cooled to room temperature,

[0046] (2) Preparatio...

Embodiment 2-6

[0053] As compared with Example 1, Example 2-6 In addition to organic silicone emulsions, cellulose ethers, dispersants, wetting agents, film formation auxiliaries, nano-ferrous-type titanium white powder, and nammondonite components are different. The rest is the same as those in Example 1.

[0054] Table 1 Example 2-6 Content Table of each component

[0055]

Embodiment 7-12

[0057] Examples 7-12 Examples of the antibacterial silicone resin were adjusted except that the antibacterial silicone resin was adjusted, and the rest were the same as in Example 1. The sealing multi-purpose can regulate the structure of the antimicrobial organic silicone resin is Where 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] Table 2 Example 7-12 Removal Multi-Uses Adjustable A, B, C, N, and M in A, B, C, N, and M

[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] Description: The hardness is tested in accordance with GB / T 6739-2006; the antibacterial rate is tested in GB / T21866-2008; xenon lamp aging according to GB / T16422.2-2014 / ISO 4892-2: 2006 test; UV lamp aging (there is no yellow) According to GB / T16422.3-2014 / ISO 4892-3: 2006 test; the stain resistance assessment in self...

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Abstract

The invention discloses a high-performance self-cleaning organic silicon coating composition and a preparation method thereof, belonging to the technical field of coatings, and consists of the following raw materials in parts by weight: 450-500 parts of silicone resin emulsion, 2-6 parts of cellulose ether 0.5-3 parts of dispersant, 0.5-2 parts of wetting agent, 10-20 parts of film-forming aid, 350-500 parts of nano-rutile titanium dioxide, and 80-120 parts of nano-montmorillonite. Silicone resin nano-coatings are coated on the surface of the substrate to make them resistant to biodegradation, heat and aging, as well as antibacterial and bactericidal properties. In addition, due to the hydrophobic properties of the coating itself, the coating can fill the unevenness that we cannot see with the naked eye. The small pores and capillary pores make the surface of the material smooth and even, and it also has a strong repelling effect on water. Rainwater will form a "lotus leaf effect" on the surface of the coating, and the rolling of rainwater will take away the dust on the surface of the coating, so it also has an automatic cleaning function.

Description

Technical field [0001] The present invention belongs to the technical field of coating, and more particularly to a high performance self-cleaning silicone coating composition and a preparation method thereof. Background technique [0002] At this stage, the market is self-cleaning, in addition to formaldehyde, antibacterial three-in-1 or two-like coatings are obtained in the following manner: The first mode is an organic silicone modification of acrylate or other resins. This method is to graf a certain silicone on the acrylate resin, there is a certain effect, but the modification is limited, the reason is that the main chain is a carbon chain rather than the silicone, its weathering resistance is limited, and the silicone is connected Limited from the branches, self-cleaning, limited formaldehyde, limited antibacterial ability; the second method is a method of adopting a physiological mixture of acrylate resins and silicone resins. This method has a certain effect in self-clean...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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