Expanded silicone fireproof seal gum and method of preparing the same

A fireproof sealant, foaming technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve problems such as insufficient foaming performance, achieve low corrosiveness, good sealing effect, and good flame retardant and fireproof performance. Effect

Inactive Publication Date: 2009-11-25
HAILONG EMERSON ZHENJIANG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing silicone sealants still have deficiencies in the comprehensive indicators of bonding performance, flame retardant and fireproof performance, and foaming performance.

Method used

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  • Expanded silicone fireproof seal gum and method of preparing the same
  • Expanded silicone fireproof seal gum and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add 150kg of α, ω-dihydroxypolydimethylsiloxane, 80kg of calcium carbonate and 60kg of zinc borate flame retardant into the multifunctional dispersing mixer in batches and stir, and heat while stirring until the temperature reaches 65°C, then stop heating. The vacuum degree is -0.06MPa, and the dehydration and blending are carried out for 3 hours. Then 8kg of γ-aminopropyltriethoxysilane, 6kg of polyethylene wax, 5kg of methyltrimethoxysilane, 6kg of isopropyl titanate, 1kg of dibutyltin diacetate and 4.5kg of foamable ammonium polyphosphate were divided into Add batches to the multifunctional dispersing mixer, mix with the above α, ω-dihydroxy polydimethylsiloxane mixture, control the temperature at 65°C, stir thoroughly for 5 hours, cool the material, and obtain a foamable silicone fireproof sealant .

Embodiment 2

[0031] Add 200kg of α, ω-dihydroxypolydiethylsiloxane, 100kg of talc powder and 55kg of aluminum hydroxide flame retardant into the multifunctional dispersing mixer in batches and stir, and heat while stirring until the temperature reaches 70°C, stop heating . The vacuum degree is -0.06MPa, and the dehydration and blending are carried out for 2.5 hours. Then 7.5kg of γ-(2,3 glycidoxy)propyltrimethoxysilane, 5kg of silicon dioxide, 10kg of phenyltrimethoxysilane, 8kg of butyl titanate, 1kg of dibutyltin dilaurate and foaming Type 6 kg of monoammonium phosphate is added in batches to the multi-functional dispersing mixer, mixed with the above-mentioned α, ω-dihydroxy polydiethylsiloxane mixture, the temperature is controlled at 70 ° C, fully stirred for 6 hours, and the material is cooled to obtain foaming Type silicone fire sealant.

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Abstract

The invention belongs to fireproof sealing material, relating to an expanded silicone fireproof seal gum and a method of preparing the same. The formula components of starting materials of the seal gum are as follows by weight: 30 to 60 parts of alpha, berta-dihydroxy polysiloxane, 1 to 10 parts of coupling agent, 30 to 90 parts of filler, 1 to 10 parts of thixotropic agent, 10 to 50 parts of flame retardants, 1 to 10 parts of cross linkers, 1 to 10 parts of t adhesion agents, 0.1 to 5 parts of catalytic curing agents and 1 to 10 parts of foaming agents. The invention has excellent flame resistance fireproof performance, little corrosiveness to the base material, excellent comprehensive performance, and has foaming performance and better sealing performance; and the adhesive property can satisfy the operating requirements.

Description

technical field [0001] The invention belongs to a fireproof sealing material, and relates to a foamed silicone fireproof sealant and a manufacturing method thereof. Background technique [0002] Silicone sealant is a relatively common sealing material, which is mainly used in fireproof sealing of buildings, flame retardant sealing of cables through walls and other applications. The existing silicone sealants still have deficiencies in the comprehensive indicators of bonding performance, flame retardant and fireproof performance, and foaming performance. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a foamed silicone fireproof sealant with good bonding performance and strong flame retardancy and its manufacturing method. [0004] The foaming type silicone fireproof sealant of the present invention, its starting material formula component is by weight: [0005] α, ω-dihydroxypolysiloxane 30-60 parts [0006] C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J9/00C09K3/10
Inventor 戴金华施吉慧徐殿邦
Owner HAILONG EMERSON ZHENJIANG ENERGY TECH
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