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Waterborne swelling type steel structure fireproof coating

A technology for fire retardant coatings and profiled steels, applied in the directions of fire retardant coatings, anti-corrosion coatings, coatings, etc., can solve the problems that the fire resistance effect is not as good as that of non-intumescent fire retardant coatings, the load of steel structure increases greatly, and the application effect is not ideal, so as to avoid coating. Membrane defects, taking into account fire resistance, the effect of not easy to precipitation

Inactive Publication Date: 2019-02-22
安庆市泽烨新材料技术推广服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with other non-intumescent fire retardant coatings, the existing fire retardant coatings for steel structures have lower thermal insulation capacity in the initial stage of foaming and expansion, resulting in a large temperature rise of the steel structure before the thermal insulation layer is fully expanded, and the overall fire resistance effect is usually not as good as Non-intumescent fire-resistant coatings, and most of the coatings increase the load on the steel structure greatly, the application effect is not ideal, and the use is limited

Method used

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  • Waterborne swelling type steel structure fireproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of modified potassium titanate whisker is:

[0020] Add potassium titanate whiskers to 3wt% maleic acid solution for ultrasonic dispersion, heat up to 80°C, then add nano-titanium dioxide and aluminate coupling agent, stir for 10 hours, and then centrifuge and vacuum dry.

[0021] The mass ratio of potassium titanate whiskers to aluminate coupling agent is 25:1, and the mass ratio of potassium titanate whiskers to nano titanium dioxide is 6:1.

Embodiment 2

[0023] The preparation method of modified potassium titanate whisker is:

[0024] Add potassium titanate whiskers to 6wt% maleic acid solution for ultrasonic dispersion, heat up to 90°C, then add nano-titanium dioxide and aluminate coupling agent, stir for 5 hours, and then centrifuge and vacuum dry.

[0025] The mass ratio of potassium titanate whiskers to aluminate coupling agent is 35:1, and the mass ratio of potassium titanate whiskers to nano titanium dioxide is 2:1.

Embodiment 3

[0027] A water-based intumescent fireproof coating for steel structures, comprising the following components in parts by weight:

[0028] Acrylic emulsion 50 parts, silicon acrylic emulsion 20 parts, ammonium polyphosphate 6 parts, dipentaerythritol 7 parts, expanded perlite 12 parts, sodium hexametaphosphate wetting agent 0.6 parts, water-based acrylate copolymer 0.5 parts, propylene glycol phenyl ether 4 parts parts and 26 parts of the modified potassium titanate whiskers of Example 1.

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Abstract

The invention discloses a waterborne swelling type steel structure fireproof coating. The fireproof coating contains the following components in parts by weight: 40-60 parts of an acrylic emulsion, 10-30 parts of a silicone acrylic emulsion, 4-8 parts of ammonium polyphosphate, 2-6 parts of dipentaerythritol, 8-16 parts of expanded perlite, 0.4-0.8 part of a wetting dispersant, 0.3-0.6 part of a flatting agent, 2-6 parts of a film forming aid and 20-30 parts of a modified potassium titanate whisker, wherein the modified potassium titanate whisker is mainly prepared from a potassium titanate whisker, nano-titanium dioxide and an aluminate coupling agent. The fireproof coating has the characteristics that a coating layer is thin, and the thermal insulation property and fireproof performanceare excellent.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based intumescent fireproof coating for steel structures. Background technique [0002] Compared with concrete, steel structure has obvious advantages in material properties, economic benefits, and environmental protection. It is widely used in long-span structures, super high-rise buildings, ordinary residences and office buildings, etc., and is gradually becoming the mainstream material of construction. However, the poor fire performance of steel structures restricts its development to a large extent. Theoretically, the critical temperature at which the steel structure cannot maintain static equilibrium under full load is 528°C. Once a fire breaks out in a building, the temperature of the fire site can reach more than 700°C within 10 minutes, and the exposed steel structure will reach the critical temperature within 10 minutes of the fire, and it will prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D133/04C09D5/18C09D7/62C09D7/61C09D7/63C09D5/08
CPCC08K2003/2241C08K2003/323C08K2201/011C08L2201/02C09D5/08C09D5/185C09D7/61C09D7/62C09D7/63C09D7/70C09D133/00C08L43/04C08K3/32C08K5/06C08K7/26C08K9/04C08K3/22C08K7/08
Inventor 汪琦
Owner 安庆市泽烨新材料技术推广服务有限公司
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