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A kind of organosilicon weather-resistant brushed decorative coating

A decorative coating and weather-resistant technology, applied in coatings and other directions, can solve the problems of large types and contents of additives, large VOC emissions, complex production processes, etc., and achieve the effects of excellent environmental protection, good adhesion, and low cost

Active Publication Date: 2019-10-18
浙江凌志新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses silicone-modified acrylic emulsion as the film-forming substance, the main body is acrylic emulsion, silicone is only a modifier, and the addition amount is not large, resulting in poor weather resistance, large types and contents of additives in the system, and VOC emissions. It is relatively large, and its napping effect depends on a large amount of thickeners. The addition of thickeners will inevitably lead to mildew in the paint, so it is necessary to add anti-fungal agents and preservatives. The addition of these additives will increase the cost of the paint on the one hand. , to complicate the production process, and some antifungal agents may contain heavy metals

Method used

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  • A kind of organosilicon weather-resistant brushed decorative coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A silicone weather-resistant brushed decorative coating, which is prepared by mixing the following raw material components in parts by weight: α, ω-dihydroxy polydimethylsiloxane I: 50 parts, α, ω-dihydroxy polydimethylsiloxane Methylsiloxane II: 50 parts, fumed silica: 15 parts, aluminum hydroxide: 60 parts, acicular wollastonite powder: 5 parts, glass fiber: 5 parts, rutile titanium dioxide: 25 parts, nanocarbonic acid Calcium: 15 parts, hydroxy silicone oil: 15 parts, pigment: 20 parts, cross-linking reagent (mixture of methyl tributylketoxime silane and phenyl tributylketoxime silane in a mass ratio of 4:6): 13 Parts, coupling agent (a mixture of γ-aminopropyltriethoxysilane and γ-glycidyloxypropyltrimethoxysilane at a mass ratio of 1:1): 0.85 parts, defoamer (Deqian 5300, Commercially available): 0.2 parts, wetting and dispersing agent (BYK065, commercially available): 0.5 parts, catalyst (dibutyltin dilaurate): 5 parts.

[0040] Described nano-calcium carbonate i...

Embodiment 2

[0044] A silicone weather-resistant brushed decorative coating, which is prepared by mixing the following raw material components in parts by weight: α, ω-dihydroxy polydimethylsiloxane I: 20 parts, α, ω-dihydroxy polydimethylsiloxane Methylsiloxane II: 80 parts, fumed silica: 5 parts, aluminum hydroxide: 40 parts, acicular wollastonite powder: 20 parts, glass fiber: 15 parts, rutile titanium dioxide: 10 parts, nanocarbonic acid Calcium: 30 parts, hydroxyl silicone oil: 5 parts, pigment: 5 parts, crosslinking agent (tetrabutanoximinosilane): 5 parts, coupling agent (N-(β-aminoethyl)-γ-aminopropyl trimethoxysilane): 0.35 parts, defoamer (Deqian 5300, commercially available): 0.1 part, wetting and dispersing agent (BYK065, commercially available): 0.2 parts, catalyst (dibutyltin dilaurate and dilauric acid Dioctyltin (a mixture of 1:1 by mass ratio): 2.5 parts.

[0045] Described nano-calcium carbonate is polybutylacrylate grafted nano-calcium carbonate, and the preparation met...

Embodiment 3

[0049] A silicone weather-resistant brushed decorative coating, which is prepared by mixing the following raw material components in parts by weight: α, ω-dihydroxy polydimethylsiloxane I: 40 parts, α, ω-dihydroxy polydimethylsiloxane Methylsiloxane II: 70 parts, fumed silica: 10 parts, aluminum hydroxide: 50 parts, acicular wollastonite powder: 10 parts, glass fiber: 8 parts, rutile titanium dioxide: 15 parts, nanocarbonic acid Calcium: 20 parts, hydroxy silicone oil: 10 parts, pigment: 10 parts, cross-linking agent (methyl tributylketoximosilane): 8 parts, coupling agent (γ-methacryloxypropyl trimethoxy silane): 0.6 parts, defoamer (Deqian 5300, commercially available): 0.15 parts, wetting and dispersing agent (BYK065, commercially available): 0.3 parts, catalyst (dioctyltin dilaurate): 3.5 parts.

[0050] Described nano-calcium carbonate is polybutylacrylate grafted nano-calcium carbonate, and the preparation method of described polybutylacrylate-grafted nano-calcium carbon...

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Abstract

The invention discloses an organosilicone weather-resistant brushed decorative coating, which is prepared by mixing the following raw materials in parts by weight: 20-50 parts of alpha, omega-dyhydroxyl polydimethylsiloxane I, 50-80 parts of alpha-omega dyhydroxyl polydimethylsiloxane II, 5-15 parts of fumed silica, 40-60 parts of aluminium hydroxide, 5-20 parts of wollastonite, 5-15 parts of glass fiber, 10-25 parts of rutile titanium dioxide, 15-30 parts of nano calcium carbonate, 5-15 parts of hydroxyl silicone oil, 5-20 parts of a pigment, 5-13 parts of a cross-linking reactant, 0.35-0.85 part of a coupling agent, 0.1-0.2 part of an antifoaming agent, 0.2-0.5 part of a wetting dispersant and 2.5-5 parts of a catalyst. The organosilicone weather-resistant brushed decorative coating has excellent weather resistance, is very high in adhesive force on a substrate and has excellent thixotropic property.

Description

technical field [0001] The invention relates to the technical field of paint production, in particular to a silicone weather-resistant napped decorative paint. Background technique [0002] As a coating with a three-dimensional decorative effect, the brushed coating is widely used in various building walls. The so-called brushed paint is a special paint with burrs or textures of a certain size that can be pulled out of the incompletely cured paint through a special roller during the construction process. Due to the poor weather resistance of ordinary coatings, the service life of coatings is greatly reduced, and weather-resistant brushed coatings have emerged in response to market demand. According to different coating effects, design formulations, adjust the performance of coatings or construction techniques to achieve different stereoscopic vision. [0003] Traditional brushed coatings are usually prepared from acrylic acid and other film-forming substances with C-C bond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/06C09D5/00C09D5/28C09D7/62C09D7/61C09D7/80
Inventor 陈世龙樊波张春晖张宝华张举明陈倩倩丁晓林王香娣
Owner 浙江凌志新材料有限公司
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