Unlock instant, AI-driven research and patent intelligence for your innovation.

Steel structure fireproof coating containing calcium sulfate whiskers

A calcium sulfate whisker and fireproof coating technology, which is applied in fireproof coatings, epoxy resin coatings, coatings, etc., can solve the problem that the fireproof effect is not as good as that of non-expandable fireproof coatings, the load of steel structures increases greatly, and the application effect is not ideal, etc. Problems, to achieve the effect of improving hardness, improving fire performance, and good rigidity

Inactive Publication Date: 2019-02-12
安庆市泽烨新材料技术推广服务有限公司
View PDF4 Cites 1 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steel structure fireproof coating containing calcium sulfate whiskers
  • Steel structure fireproof coating containing calcium sulfate whiskers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of modified calcium sulfate whisker is:

[0021] Add calcium sulfate 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.

[0022] The mass ratio of calcium sulfate whiskers to aluminate coupling agent is 25:1, and the mass ratio of calcium sulfate whiskers to nano titanium dioxide is 6:1.

Embodiment 2

[0024] The preparation method of modified calcium sulfate whisker is:

[0025] Add calcium sulfate 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 centrifuge and vacuum dry after completion.

[0026] The mass ratio of calcium sulfate whiskers to aluminate coupling agent is 35:1, and the mass ratio of calcium sulfate whiskers to nano titanium dioxide is 2:1.

Embodiment 3

[0028] A fireproof coating for steel structures containing calcium sulfate whiskers, comprising the following components in parts by weight:

[0029] 50 parts of water-based epoxy emulsion, 20 parts of amino resin, 6 parts of ammonium polyphosphate, 7 parts of dipentaerythritol, 12 parts of expanded graphite, 0.6 part of sodium hexametaphosphate wetting agent, 0.4 part of aminomethylcyclohexane, water-based acrylate 0.5 parts of copolymer, 4 parts of propylene glycol phenyl ether and 26 parts of modified calcium sulfate whiskers of Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a steel structure fireproof coating containing calcium sulfate whiskers. The steel structure fireproof coating is prepared from the following ingredients in parts by weight: 40-60 parts of water-based epoxy emulsion, 10-30 parts of amine resin, 4-8 parts of ammonium polyphosphate, 2-6 parts of dipentaerythritol, 8-16 parts of expanded graphite, 0.4-0.8 part of wetting dispersant, 0.3-0.6 part of curing agent, 0.3-0.6 part of flatting agent, 2-6 parts of coalescing agent and 20-30 parts of modified calcium sulfate whisker, wherein the modified calcium sulfate whisker is mainly prepared from calcium sulfate whisker, nanometer titania and aluminate coupling agent. The fireproof coating has the characteristics of thin coating and excellent thermal insulation and fireproof performance.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a steel structure fireproof coating containing calcium sulfate whiskers. 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 produce p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09D163/00C09D161/20C09D5/18
CPCC08K2003/2241C08K2003/323C08K2201/011C09D5/18C09D163/00C08L61/20C08K9/04C08K9/02C08K7/08C08K3/22C08K3/32C08K7/24C08K13/06
Inventor 汪琦
Owner 安庆市泽烨新材料技术推广服务有限公司