Inorganic potassium lithium silicate solution composite organic fluorosilicone coating and preparation method thereof

A technology of potassium silicate solution and lithium silicate, which is applied in the direction of antifouling/underwater coatings, coatings, paints containing biocide, etc., which can solve the problems of insufficient washing resistance and weather resistance, insufficient penetration of primers, and film formation To solve problems such as poor performance, to achieve the effect of wide application range, excellent weather resistance and stain resistance, and excellent performance

Active Publication Date: 2018-03-09
固克节能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, the building exterior wall coatings on the existing market are mainly latex paints and sand wall paints with acrylic emulsions, styrene-acrylic emulsions, etc. as film-forming substances. Primers with good alkali resistance and good weather resistance are often required for exterior wall coating The topcoat is used as a match, but in actual use, the above-mentioned coating system has the following defects: 1) The primer has insufficient permeability, and the penetration and reinforcement of the putty layer on the exterior wall are poor, resulting in low adhesion of the entire exterior wall coating system; 2) The topcoat has problems such as poor stain resistance, insufficient washing resistance and weather resistance
The exterior wall system of inorganic silicate and silica sol base material is very firmly bonded to the material and has excellent water resistance, but the film-forming property is not good, and the film is easy to crack and brittle.

Method used

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  • Inorganic potassium lithium silicate solution composite organic fluorosilicone coating and preparation method thereof
  • Inorganic potassium lithium silicate solution composite organic fluorosilicone coating and preparation method thereof
  • Inorganic potassium lithium silicate solution composite organic fluorosilicone coating and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The raw material composition of embodiment 1 is carried out proportioning modulation, is used for the coating of floor hardener.

[0035] 1. Preparation of modified lithium potassium silicate solution:

[0036] A. Add 500g of lithium silicate solution (modulus 4.8, mass content 23%) and 150g potassium silicate solution (modulus 3.5, mass content 35%) into the reactor, start stirring and keep the speed at 500-1500 rpm / min Stir well to mix evenly, and slowly heat to 60-65°C.

[0037] B. Increase the stirring speed at 3000-4500 rpm, slowly add 150g of silica sol (silicon dioxide solid content 30%, average particle size 8-20nm) into the reactor dropwise, and complete the dropwise addition within 0.5h-1.0h .

[0038] (3) Slowly add 40g of methyltrimethoxysilane dropwise within 0.5h. After the dropwise addition is completed, under high-speed stirring, keep the temperature at 60-65°C for 1.5-2 hours to prepare about 840g of translucent Modified lithium potassium silicate ...

Embodiment 2

[0047] The raw material components of Example 2 are prepared in a proportioning manner, and are used for the high-grade exterior wall paint with the bottom surface integrated. Its preparation process is detailed below.

[0048] 1. Preparation of modified lithium potassium silicate solution:

[0049] A. Add 250g of lithium silicate solution (modulus 4.8, mass content 23%) and 60g potassium silicate solution (modulus 3.5, mass content 35%) into the reactor, start stirring and keep the speed at 500-1500 rpm / min Stir well to mix evenly, and slowly heat to 60-65°C.

[0050] B. Increase the stirring speed at 3000-4500 rpm, slowly add 70g of silica sol (30% silica solid content, 8-20nm average particle size) dropwise into the reactor, and complete the dropwise addition within 40 minutes.

[0051] (3) Slowly add 8g of γ-aminopropylmethyltrimethoxysilane dropwise within 0.5h. After the dropwise addition is completed, under high-speed stirring, keep warm at 60-65°C for 1.5-2 hours t...

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Abstract

The invention discloses an inorganic potassium lithium silicate solution composite organic fluorosilicone coating which is prepared from, by weight, 20-65 parts of modified potassium lithium silicatesolution, 5-25 parts of organic fluorosilicone emulsion, 0.2-0.3 part of stabilizing agents, 0.1-1 part of wetting agents, 0.1-1 part of dispersing agents, 0.1-0.3 part of defoaming agents, 0.5-1 partof coalescing agents, 0.2-1 part of thickening agents, 0.1-0.3 part of preservative and 15-35 parts of deionized water. The invention further discloses a preparation method of the coating. Low-modulus lithium silicate and potassium silicate mixed solution and basic silica sol serve as main raw materials, organic silane coupling agents serve as modifying agents, so that stable potassium lithium silicate mixed solution is prepared, the stable potassium lithium silicate mixed solution and the organic fluorosilicone emulsion are coldly spliced and combined to serve as film-forming materials of the coating, pigments, fillers and various additives are added, and a multifunctional inorganic and organic fluorosilicone composite system coating is prepared. The coating is wide in application, and acoating film is excellent in physical and chemical performance.

Description

technical field [0001] The invention relates to the fields of architectural coatings and floor coatings, in particular to a coating of inorganic lithium potassium silicate solution compounded with organic fluorine silicon and a preparation method thereof. Background technique [0002] The existing floor coating systems on the market are generally epoxy floor, polyurethane floor and cement hardened floor. Most of epoxy floor and polyurethane floor are solvent-based systems, and VOC is inevitable in the production process and construction engineering. Emissions, under the current environmental protection situation, are gradually being replaced and eliminated. At the same time, the coating film performance also has the disadvantages of not being scratch resistant and poor wear resistance; while the cement hardened floor that is being promoted in the market is mainly low Modulus inorganic potassium silicate, sodium silicate and lithium silicate system, the material itself is too...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D5/16C09D7/62C09D7/61C09D7/63
CPCC08K2003/2241C08K2003/265C09D5/002C09D5/1668C09D5/1687C09D183/08C08L71/02C08K13/06C08K9/06C08K3/34C08K3/22C08K3/36C08K5/103C08K3/26C08K3/346C08K5/47
Inventor 汪斌陈团吴银河翟兰芳
Owner 固克节能科技股份有限公司
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