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High-displacement performance fireproof silicone sealant suitable for high-rise buildings and preparation method of high-displacement performance fireproof silicone sealant

A technology for silicone sealants and high-rise buildings, applied in the direction of adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of unsatisfactory, insufficient displacement capacity, and unsatisfactory high-rise buildings, etc., to achieve Avoid the spread of fire, improve the ability to move, and prevent the spread of toxic gas and smoke

Inactive Publication Date: 2018-12-14
GUANGZHOU JOINTAS CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silicone sealant still has the following shortcomings: the displacement capacity is not high enough to meet the needs of fireproof adhesives for high-rise buildings
However, the silicone sealant still has the following shortcomings: the displacement capacity is not high enough to meet the fireproof adhesive requirements of high-rise buildings, even super high-rise buildings

Method used

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  • High-displacement performance fireproof silicone sealant suitable for high-rise buildings and preparation method of high-displacement performance fireproof silicone sealant
  • High-displacement performance fireproof silicone sealant suitable for high-rise buildings and preparation method of high-displacement performance fireproof silicone sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The invention provides a high-displacement performance fireproof silicone sealant suitable for high-rise buildings, which comprises: 100 parts of α, ω-dihydroxypolydimethylsiloxane, polydimethylsiloxane 15 parts of alkane, 10 parts of alkane-terminated polysiloxane, 20 parts of inorganic filler, 51 parts of ceramic powder, 10 parts of silane crosslinking agent, 2 parts of silane coupling agent, and 0.2 part of the first catalyst.

[0036] Wherein the α, ω-dihydroxy polydimethylsiloxane is selected from the room temperature vulcanized methyl silicone rubber produced by Hoshine Silicon Industry Co., Ltd., and the viscosity at 25° C. is 20,000 mPa·s.

[0037] The polydimethylsiloxane is selected from XHG-201 methyl silicone oil produced by Zhejiang Xin'an Chemical Group Co., Ltd., and its viscosity at 25° C. is 20,000 mPa·s.

[0038] The structural formula of the alkane-terminated polysiloxane is Where n is 75, x is 3, and the viscosity at 25°C is 100mPa·s.

[0039] The...

Embodiment 2

[0051] The difference between the high-displacement performance fireproof silicone sealant suitable for high-rise buildings of embodiment 2 and embodiment 1 is: 85 parts of α, ω-dihydroxypolydimethylsiloxane, polydimethylsiloxane 20 parts, 50 parts of inorganic filler, 30 parts of ceramic powder, 8 parts of silane crosslinking agent.

[0052] Wherein the viscosity of the α,ω-dihydroxypolydimethylsiloxane at 25°C is 50000mPa·s.

[0053] The viscosity of the polydimethylsiloxane at 25° C. is 15000 mPa·s.

[0054] The structural formula of the alkane-terminated polysiloxane is Where n is 140, x is 4, and the viscosity at 25°C is 250mPa·s.

[0055] The components for preparing the alkane-terminated polysiloxane include a terminal hydrogen-containing silicone oil, a second catalyst, and an olefin, and the terminal hydrogen-containing silicone oil is selected from the terminal hydrogen-containing silicone oil produced by Foshan Huagu Organic Silicon Co., Ltd., wherein The second...

Embodiment 3

[0066] The difference between the high-displacement performance fireproof silicone sealant suitable for high-rise buildings of Example 3 and Example 1 is: 70 parts of α, ω-dihydroxy polydimethylsiloxane, polydimethylsiloxane 18 parts, 60 parts of inorganic filler, 27 parts of ceramic powder, 8.5 parts of silane crosslinking agent, 1 part of silane coupling agent, 0.1 part of the first catalyst.

[0067]Wherein the viscosity of the α,ω-dihydroxypolydimethylsiloxane at 25°C is 10000mPa·s.

[0068] The viscosity of the polydimethylsiloxane at 25° C. is 10000 mPa·s.

[0069] The structural formula of the alkane-terminated polysiloxane is Where n is 230, x is 4, and the viscosity at 25°C is 500mPa·s.

[0070] The components for preparing the alkane-terminated polysiloxane include a terminal hydrogen-containing silicone oil, a second catalyst, and an olefin, and the terminal hydrogen-containing silicone oil is selected from the terminal hydrogen-containing silicone oil produced b...

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Abstract

The invention relates to a high-displacement performance fireproof silicone sealant suitable for high-rise buildings and a preparation method of the high-displacement performance fireproof silicone sealant, and belongs to the field of fireproof silicone sealants. The high-displacement performance fireproof silicone sealant is prepared from the following components: alpha,omega-dihydroxy polydimethyl siloxane, polydimethyl siloxane, alkane-terminated polysiloxane, inorganic filler, ceramic powder, a silane crosslinking agent, a silane coupling agent and a first catalyst, wherein the alkane-terminated polysiloxane has a structure as shown, n is selected from 80-230, and x is an integer selected from 2-4. The prepared fireproof silicone sealant has stronger displacement capability, and is more suitable for application in sealing of high-rise and super high-rise buildings; moreover, the fireproof silicone sealant is ceramized into a hard shell after combustion is performed, and the shell does not melt or drip in a fire environment, so that a strong protective role in the fire is achieved; and therefore, the integrity of the buildings is not only maintained, damage, caused by burning down of the buildings, to people is avoided, spreading of poisonous gas and smoke after burning is conducted can also be avoided.

Description

technical field [0001] The invention relates to a high-displacement performance fireproof silicone sealant suitable for high-rise buildings and a preparation method thereof, belonging to the field of fireproof silicone sealant. Background technique [0002] Ordinary silicone sealant is one of the commonly used sealants for building joint sealing. The main raw material of ordinary silicone sealant is linear polysiloxane such as 107 glue, and its main chain is mainly composed of Si-O-Si bonds. , during the curing process, the cross-linking agent and the base polymer react to form a network structure, and the Si-O-Si bond energy is higher than the UV bond energy. Excellent adhesion, weather resistance and UV resistance. Since 107 glue burns at 200-300°C, and the fire of high-rise buildings has the characteristics of rapid spread, difficult evacuation of people, easy collapse of buildings after burning, and difficulty in fighting fire, so all manufacturers have developed firepr...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C09J11/06
CPCC08K2003/265C08K2201/011C08K2201/014C08L2201/02C08L2205/025C08L2205/03C09J11/04C09J11/06C09J183/04C08L83/04C08K3/00C08K5/54C08K3/26
Inventor 谢丽莎林坤华黄承相石正金
Owner GUANGZHOU JOINTAS CHEM
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