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Ceramic flame-retardant fireproof silicone sealant and preparation method thereof

A technology of silicone sealant and vitrification, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve problems such as loss of fixation and sealing effects, achieve good physical and mechanical properties, convenient operation, and excellent adhesion and storage stability

Active Publication Date: 2014-01-15
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary flame retardant silicone sealant is flame retardant and self-extinguishing, but it will become inorganic powder under continuous high temperature ablation, thus losing its fixing and sealing effect

Method used

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  • Ceramic flame-retardant fireproof silicone sealant and preparation method thereof
  • Ceramic flame-retardant fireproof silicone sealant and preparation method thereof
  • Ceramic flame-retardant fireproof silicone sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the weight fraction, put 100 parts of trimethoxy-terminated polydimethylsiloxane with a viscosity of 20000 cps, 6 parts of silicon micropowder, and 100 parts of aluminum oxide into the kneader, keep the temperature at 150 ° C, and the vacuum degree at Dehydration and blending between 0.06-0.09MPa for 2 hours, milling twice with a mill, transferred to a high-speed dispersion stirring tank and cooled to room temperature to obtain the base material, at room temperature 6.5 parts of methyl trimethoxysilane, vinyl trimethyl Add 1.5 parts of oxysilane, 0.8 parts of γ-aminopropyltriethoxysilane, 0.8 parts of glycidyl ether propyltrimethoxysilane, and 20 parts of methyl silicone oil into the high-speed dispersion stirring tank, mix with the base material, vacuum The pressure is kept at -0.1-0.06MPa, the rotation speed is kept at 250rpm, stirred for 1h, and 0.7 parts of bis(ethyl acetoacetate) bis(isopropoxy) titanate complex is added, stirred, and the vacuum degree ...

Embodiment 2

[0022] According to the weight fraction, put 100 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 20000cps, 15 parts of fumed silica, and 80 parts of silicon dioxide into the kneader, keep the temperature at 150 °C, and the vacuum degree at 0.06- Dehydration and blending at 0.09MPa for 2 hours, milling twice with a mill, transferred to a high-speed dispersion stirring tank and cooled to room temperature to obtain the base material, at room temperature 8 parts of methyltrimethoxysilane, vinyltrimethoxy Add 1 part of silane, 0.5 part of isocyanate propyltriethoxysilane, 0.6 part of β-aminoethyl-γ-aminopropyltrimethoxysilane, and 20 parts of methyl silicone oil into the high-speed dispersion stirring tank, and Mix the base materials, keep the vacuum at -0.1-0.06MPa, keep the speed at 250rpm, stir for 1h, add 0.7 parts of isopropyl titanate, stir, keep the vacuum at -0.1-0.06MPa, keep the speed at 250rpm, stir for 1h After that, it is discharged into cans. On...

Embodiment 3

[0024] According to the weight fraction, 100 parts of methyl dimethoxy end-capped polydimethylsiloxane with a viscosity of 20000cps, 2 parts of nano calcium carbonate, 3 parts of silicon micropowder, 1 part of quartz powder, 65 parts of potassium oxide and 35 parts of barium oxide Put it into the kneader, keep the temperature at 150°C, dehydrate and blend for 2 hours at a vacuum degree of 0.06-0.09MPa, grind it twice through the mill, transfer it to a high-speed dispersion stirring tank and cool it to room temperature to obtain the base material, at room temperature Next, 4.5 parts of methyltrimethoxysilane, 1.5 parts of vinyltrimethoxysilane, 0.8 parts of γ-aminopropyltriethoxysilane, and 0.8 parts of β-aminoethyl-γ-aminopropyltrimethoxysilane , 20 parts of alkoxy silicone oil and 10 parts of white oil are added to the high-speed dispersion stirring tank and mixed with the base material. Ester) 0.5 part of bis(isopropoxy) titanate complex, 0.2 part of dibutyltin dilaurate, st...

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Abstract

The invention provides a ceramic flame-retardant fireproof silicone sealant and a preparation method thereof. The ceramic flame-retardant fireproof silicone sealant is prepared from 100 parts of a base polymer, 3-40 parts of a plasticizer, 5-200 parts of a filling material, 30-150 parts of ceramic powder, 1-15 parts of a cross-linking agent, 0.1-3 parts of a stabilizer, 0.5-3 parts of a catalyst and 0.5-3 parts of a coupling agent. The preparation method comprises the following steps of adding the above raw materials into a high-speed dispersion mixer, and carrying out stirring for 60-180min under the conditions of a vacuum degree of 0.06-0.095MPa and a rotation rate of 20-600rpm to obtain the ceramic flame-retardant fireproof silicone sealant. The ceramic flame-retardant fireproof silicone sealant can form a hard ceramic material under the action of continuous ablation at a high temperature above 500 DEG C, does not lose fixing and sealing effects, has flame retardation, smoke isolation and fire prevention functions, and guarantees escape safety of people in the case of fire disaster. The invention provides the preparation of the ceramic flame-retardant fireproof silicone sealant. The preparation method has simple processes.

Description

technical field [0001] The invention belongs to the technical field of polymer sealing materials, and in particular relates to a vitrified flame-retardant and fire-proof silicone sealant and a preparation method thereof. Background technique [0002] Silicone sealant has excellent aging resistance, anti-ultraviolet, shock resistance, high and low temperature resistance, and can maintain elasticity in harsh climate environments, so it is widely used in construction, automobiles, electrical and electronic, machinery, chemicals, etc. industry. With the increase in the use of silicone sealants in densely populated areas such as high-rise buildings, hospitals, stations, and large entertainment venues, fire safety has attracted more and more attention, which has also made the construction industry more demanding on the fire protection level of sealants. come higher. Although ordinary flame-retardant silicone sealants are flame-retardant and self-extinguishing, they will become i...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J183/04C09J11/04C09K3/10
Inventor 徐古月阚新宇陆纪平徐文俊
Owner JIANGSU TIANCHEN NEW MATERIALS
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