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Hydrophobic silicate fireproof coating and preparation method thereof

A fireproof coating and silicate technology, which is applied in alkali metal silicate coatings, fireproof coatings, etc., can solve the problems of short storage time, high coating hardness, poor water resistance, etc., and achieve the effect of simple preparation method

Inactive Publication Date: 2014-04-02
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fireproof coating based on water glass can produce a silicate foam insulation layer in case of fire, which has the advantages of good flame retardant effect and no toxic gas, but because of its poor water resistance, the coating is easy to fall off after soaking in water which limits its use
In order to improve its water resistance, methods such as acid modification, compounding with organic film, and cross-linking curing modification are usually used, but there are disadvantages such as high curing temperature, poor stability, easy layering of coatings, and short storage time.
In addition, the coating with water glass as the base material has high hardness and high brittleness, and its coating film is easy to crack

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Weigh 18 parts of deionized water, add 1 part of dispersant, 0.8 parts of polyvinyl alcohol in sequence, then add 10.2 parts of sepiolite powder, stir evenly, grind and mix with a colloid mill at a speed of 1000 rpm, and then add 70 parts The modulus is 3.2 water glass, stir well, it is component A, ready to use; Step 2: Take 75 parts of ethyl orthosilicate, 23 parts of octadecyltriethoxyorganosilane, and 2 parts of ammonia solution and mix well , which is component B, for use; step three: take 20 parts of aluminum dihydrogen phosphate solution, add 80 parts of nano-alumina, grind and mix with a colloid mill, that is component C, for use; step four: mix A, The three components B and C are mixed evenly in a mass ratio of 1: 0.15: 0.25, and then coated on the surface-treated wood base, metal base and other materials.

Embodiment 2

[0026] Step 1: Weigh 10 parts of deionized water, add 1.0 parts of dispersant, 0.5 parts of polyvinyl alcohol in sequence, then add 5.5 parts of sepiolite powder, stir evenly, grind and mix with a colloid mill at a speed of 1000 rpm, and then add 83 parts The modulus is 3.0 water glass, stir well, it is component A, and it is ready for use; Step 2: Take 70 parts of ethyl orthosilicate, 25 parts of octadecyl triethoxyorganosilane, and 5 parts of adipic acid and mix Evenly, it is component B, ready for use; Step 3: Take 30 parts of aluminum dihydrogen phosphate solution, add 70 parts of nano-alumina, grind and mix with a colloid mill, that is component C, ready for use; Step 4: Mix A The three components of A, B, and C are mixed evenly according to the mass ratio of 1: 0.10: 0.25, and then coated on the surface-treated wood base, metal base and other materials.

Embodiment 3

[0028] Step 1: Weigh 18 parts of deionized water, add 1.2 parts of dispersant, 0.8 parts of polyvinyl alcohol in sequence, then add 8.0 parts of kaolin powder, stir evenly, grind and mix with a colloid mill at a speed of 1000 rpm, and then add 72 parts of mold The number is 3.0 water glass, stir evenly, it is component A, and it is ready for use; Step 2: Take 70 parts of ethyl orthosilicate, 25 parts of phenyltriethoxyorganosilane, and 5 parts of adipic acid and mix evenly, that is It is component B, ready for use; Step 3: Take 30 parts of aluminum dihydrogen phosphate solution, add 70 parts of nano-alumina, grind and mix with a colloid mill, that is component C, ready for use; Step 4: Combine A, B, The three components of C are mixed evenly in a mass ratio of 1: 0.20: 0.30, and then coated on the surface-treated wood base, metal base and other materials.

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PUM

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Abstract

The invention discloses a hydrophobic silicate fireproof coating and a preparation method thereof. The hydrophobic silicate fireproof coating consists of A, B and C, wherein the mass ratio of A to B to C is 1: (0.1-0.3): (0.2-0.4); A comprises the following components in part by mass: 60 to 80 parts of water glass, 15 to 20 parts of deionized water, 15 to 65 parts of filler, 0.8 to 1.5 parts of dispersant, and 0.5 to 1 part of polyvinyl alcohol; B comprises the following components in part by mass: 60 to 80 parts of tetraethyl orthosilicate, 15 to 30 parts of modified organic silane, and 1 to 10 parts of condensing agent; and C comprises the following components in part by mass: 70 to 90 parts of nano aluminum oxide, and 10 to 30 parts of aluminum dihydrogen phosphate. When the coating is used, the components A, B and C are mixed and stirred uniformly according to certain proportion and steps to form the hydrophobic silicate fireproof coating. The coating has the advantages of hydrophobic property, fireproof property, high temperature resistance and the like, and can be applied to spreading of wood-based and metal-based materials and the like.

Description

technical field [0001] The invention relates to a coating, in particular to a hydrophobic silicate fireproof coating and a preparation method thereof. Background technique [0002] "Water and fire are ruthless." Fire is a common catastrophic problem faced by the whole world, which has caused huge loss of life and property to human society. Inorganic coatings have excellent fire resistance, air permeability, pollution resistance and excellent comprehensive environmental protection performance. As people have more and more stringent requirements on the fire resistance and environmental protection of architectural coatings, it has become a new trend to vigorously develop inorganic fireproof coatings. [0003] Fire retardant coatings were first developed from inorganic fire retardant coatings. In foreign countries, water-based fireproof coatings have been used very early. In the early 20th century, there were inorganic fireproof coatings with water glass as binder and mineral...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/04C09D5/18
Inventor 胡云楚夏燎原袁利萍
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY