Steel structure fireproof protection plate containing silicon dioxide aerogel

A technology of silica and protective board, applied in the field of composite adhesives, can solve the problems of strength, thermal insulation performance gap, increase the density of fireproof board, poor thermal insulation performance and other problems, so as to improve thermal insulation performance and improve thermal insulation performance. , The effect of improving waterproof and thermal insulation performance

Pending Publication Date: 2022-07-29
石家庄易辰防火保温材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main filler of the fireproof board is ground slag, and the expanded vermiculite is only less than 10%. The fireproof board not only has a high density, but because of its weight, its application in many lightweight places is limited, and its heat insulation performance is poor.
In addition, this technology uses cement as a binder, which also greatly increases the density of the fireproof board, and its strength and heat insulation performance have a large gap compared with the water glass-based fireproof board.
[0004] Therefore, in the fire protection industry, although the water glass-based vermiculite steel structure fire protection board has a great cost advantage, it is not resistant to water and easy to return to alkali in the southern market. Problem, the inventor modified the water glass as the adhesive according to the market demand, by improving the water resistance of the water glass, and then fundamentally improved the water resistance and heat insulation performance of the vermiculite fire protection board
[0005]In the early technology research and development of our company, we used modified nano-silica thermal insulation filler, silicone-modified polyurethane acrylate and silicone-modified water The chemical cross-linking and copolymerization of glass can significantly improve the water resistance and heat insulation of water glass, but in actual production, we also found that due to the use of nano-materials, the cost is too high, and in order to avoid the agglomeration of nano-materials, the process The requirements are relatively high

Method used

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  • Steel structure fireproof protection plate containing silicon dioxide aerogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1 Preparation of modified water glass

[0032] (1) Preparation of preliminary modified water glass A:

[0033] The water glass, acid and organosilane were stirred and blended under the condition of pH 5 according to the mass ratio: 100:4:6, the stirring speed was 800r / min, and the time was 6 hours, wherein the organosilane was vinyltrimethyl. Oxysilane, the acid is a mixed acid of acrylic acid and phosphoric acid, and the molar ratio of the two acids is 5:5. Among them, micron-sized silica aerogel is added while stirring. Based on 100 parts by mass of water glass, micron-sized two The addition amount of the silica aerogel is 10 parts by weight, and the D50 diameter of the silica aerogel is about 100 μm.

[0034] (2) Preparation of silicone modified urethane acrylate:

[0035] In the presence of catalyst, solvent and polymerization inhibitor, isophorone diisocyanate (IPDI) trimer, γ-glycidyl ether oxypropyl trimethoxysilane and hydroxyethyl methacrylate are rea...

Embodiment 2

[0038] Embodiment 2 Utilize modified water glass to prepare steel structure fire protection board

[0039] The raw material formula for fire protection is: water glass 20%, expanded vermiculite 60%, kaolin 5%, perlite 5%, aluminum hydroxide 5%, reinforcing fiber 4%, sodium fluorosilicate early strength agent 1% , wherein the water glass is the modified water glass prepared in Example 1.

[0040] The specific preparation method of the vermiculite fire protection board is as follows:

[0041] (1) mixing: the raw materials are measured, and the above-mentioned raw materials are uniformly mixed in a high-speed mixer to obtain a slurry;

[0042] (2) Press molding: the slurry obtained in step (1) is pressed and molded by a mold to obtain a slab;

[0043] (3) Microwave drying and shaping: microwave drying and shaping in a microwave kiln, the drying time is 25 minutes, and finally a fireproof board with a thickness of 25mm is obtained, and the general size is 1.2m*2.4m.

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Abstract

The invention discloses a steel structure fireproof protection plate containing silicon dioxide aerogel. The steel structure fireproof protection plate is prepared from the following raw materials in percentage by mass: 20-40% of water glass, 50-60% of expanded vermiculite, 5-15% of kaolin, 5-10% of perlite, 5-10% of aluminum hydroxide, 4-10% of reinforced fibers and 1-2% of a sodium fluosilicate early strength agent. The preparation method comprises the following steps: step A, mixing: metering the raw materials, and uniformly mixing the raw materials in a high-speed mixer to obtain slurry; step B, performing compression molding: performing compression molding on the slurry prepared in the step A by using a mold to obtain a plate blank; and C, microwave drying and shaping are conducted, microwave drying and shaping are conducted through a microwave kiln, the drying time is 20-40 minutes, the fireproof protection plate with the thickness being 20-40 mm is finally obtained, and the water glass is obtained by modifying micron-sized silicon dioxide aerogel, silane and urethane acrylate.

Description

technical field [0001] The invention relates to a steel structure fire protection board containing silica aerogel, and specifically discloses a composite adhesive modified with urethane acrylate and heat insulating fillers for water glass, thereby obtaining a composite adhesive with excellent waterproof performance and high strength. Steel structure fire protection board. Background technique [0002] With the development of steel structure application technology and the maturity of steel structure fire protection technology, steel structure as a form of high-rise building structure is characterized by high strength, plasticity, good toughness, light weight, good elongation, earthquake resistance and The advantages of short construction period and other advantages have been widely used in the construction industry. Although steel is a non-combustible material, its fire resistance is poor. So far, four main measures have been taken for the protection of steel structures: di...

Claims

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Application Information

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IPC IPC(8): C04B26/32C08F299/06C04B111/28
CPCC04B26/32C08F299/065C04B2111/28C04B2201/50C04B14/204C04B14/106C04B14/18C04B14/303C04B22/126Y02B80/10
Inventor 薛永刚赵艳丽
Owner 石家庄易辰防火保温材料有限公司
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