Exterior wall fireproof coating and preparation method thereof

A technology for fire retardant coatings and exterior walls, which can be used in fire retardant coatings, cement coatings, coatings, etc., and can solve problems such as poor fire performance.

Pending Publication Date: 2021-12-31
广州艾偲尼建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the above schemes, all of them emphasize the cohesive force, but if the cohesive force is to be improved, the content of high-molecular organic matter such as emulsion must be increased. If the content of high-molecular organic matter is increased, the fireproof performance will deteriorate.

Method used

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  • Exterior wall fireproof coating and preparation method thereof
  • Exterior wall fireproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A fireproof coating for exterior walls, comprising the following components in parts by weight:

[0038] 7 parts of styrene-acrylic emulsion;

[0039] 7 parts of water-based epoxy emulsion;

[0040] 45 parts of 525 high alumina cement;

[0041] 4 parts of aluminum silicate refractory fiber;

[0042] 0.5 parts of vinyltriethoxysilane;

[0043] 4 parts of silica sol.

[0044] Wherein, the aluminum silicate refractory fibers are chopped fibers with an average diameter of 2.5-3.5 μm and a fiber length of 3 mm.

[0045] The solid content of the water-based epoxy emulsion is 50%, and the epoxy equivalent is 1150.

[0046] The solid content of the styrene-acrylic emulsion is 48%, and the viscosity at 25° C. is 700 cps.

[0047] The preparation process is as follows: pre-disperse aluminum silicate refractory fiber and silane coupling agent into styrene-acrylic emulsion to obtain styrene-acrylic emulsion mixture, mix silica sol into high-alumina cement to obtain high-alumi...

Embodiment 2

[0049] A fireproof coating for exterior walls, comprising the following components in parts by weight:

[0050] 5 parts of styrene-acrylic emulsion;

[0051] 10 parts of water-based epoxy emulsion;

[0052] 35 parts of 525 high alumina cement;

[0053] 5 parts of aluminum silicate refractory fiber;

[0054] 0.2 parts of vinyltrimethoxysilane;

[0055] 3 parts of silica sol.

[0056] Wherein, the aluminum silicate refractory fibers are chopped fibers with an average diameter of 2.5-3.5 μm and a fiber length of 3 mm.

[0057] The solid content of the water-based epoxy emulsion is 50%, and the epoxy equivalent is 1150.

[0058] The solid content of the styrene-acrylic emulsion is 48%, and the viscosity at 25° C. is 700 cps.

[0059] The preparation method is the same as in Example 1.

Embodiment 3

[0061] A fireproof coating for exterior walls, comprising the following components in parts by weight:

[0062] 10 parts of styrene-acrylic emulsion;

[0063] 5 parts of water-based epoxy emulsion;

[0064] 40 parts of 625 high alumina cement;

[0065] 4 parts of aluminum silicate refractory fiber;

[0066] 0.8 parts of vinyltrimethoxysilane;

[0067] 5 parts of silica sol.

[0068]Wherein, the aluminum silicate refractory fiber is chopped fiber with an average diameter of 2.5-3.5 μm and a fiber length of 2 mm.

[0069] The solid content of the water-based epoxy emulsion is 50%, and the epoxy equivalent is 1150.

[0070] The solid content of the styrene-acrylic emulsion is 48%, and the viscosity at 25° C. is 700 cps.

[0071] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to the field of coatings and discloses an exterior wall fireproof coating which comprises, by weight, 5-10 parts of a styrene-acrylic emulsion; 5 to 10 parts of a waterborne epoxy emulsion; 30 to 50 parts of high-alumina cement; 3-5 parts of aluminum silicate refractory fiber; 0.2 to 1 part of a silane coupling agent; and 3-5 parts of silica sol. The coating can ensure that a coating layer has basic wall adhesion, the waterborne epoxy emulsion has the characteristic of increasing the adhesion, meanwhile, the waterborne epoxy emulsion and the styrene-acrylic emulsion have the characteristic of enhancing the coating and have a synergistic effect, and the high-alumina cement can have very high strength in cooperation with the aluminum silicate refractory fibers, so that the whole coating layer is kept complete, and the main framework made of the high-alumina cement can still keep a very stable state even if the adhesive force to a wall surface and the structural strength of organic matters are reduced under the condition of high-temperature grilling or years of use, and can pass a relatively harsh fireproof test.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an exterior wall fireproof coating and a preparation method. Background technique [0002] High alumina cement has significant advantages when used in coatings. Its biggest advantage is that when it is used in outdoor coatings such as exterior wall coatings, its ratio with emulsion and organic matter is about 1:1, and it has good weather resistance. Compared with traditional organic coatings, its high temperature resistance is particularly excellent. [0003] High alumina cement can be widely used in fireproof coatings to achieve good fireproof effects. For example, CN201710047292.8 discloses fireproof coatings for fire dikes, which are mixed with Portland cement, high alumina cement, expanded perlite, expanded vermiculite, and reinforced fibers. The formed component A and component B formed by mixing polyethylene-vinyl acetate copolymer emulsion and water are used as raw materials. Duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/08C09D5/18C09D7/61C09D7/65
CPCC09D1/08C09D5/18C09D7/61C09D7/65C09D7/70
Inventor 张敬朱国海
Owner 广州艾偲尼建材科技有限公司
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