A kind of porcelain flame retardant and 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: 2015-10-28
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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  • A kind of porcelain flame retardant and fireproof silicone sealant and preparation method thereof
  • A kind of porcelain flame retardant and fireproof silicone sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to weight fraction, put 100 parts of trimethoxy-terminated polydimethylsiloxane with a viscosity of 20000cps, 6 parts of silicon powder, and 100 parts of aluminum oxide into the kneader. Keep the temperature at 150℃ and the vacuum Dehydrate and blend for 2h between 0.06-0.09MPa, grind twice through a mill, transfer to a high-speed dispersion stirring tank and cool to room temperature to obtain a base material. At room temperature, 6.5 parts of methyltrimethoxysilane, vinyltrimethyl 1.5 parts of oxysilane, 0.8 parts of γ-aminopropyltriethoxysilane, 0.8 parts of glycidyl ether propyltrimethoxysilane, 20 parts of methyl silicone oil are added to the high-speed dispersion stirring tank, mixed with the base material, and vacuum Keep the temperature at -0.1-0.06MPa, keep the speed at 250rpm, stir for 1h, add 0.7 parts of bis(ethyl acetoacetate) bis(isopropoxy) titanate complex, stir, keep the vacuum at -0.1- 0.06MPa, the speed is maintained at 250rpm, after stirring ...

Embodiment 2

[0022] According to weight fraction, put 100 parts of hydroxyl-terminated polydimethylsiloxane with a viscosity of 20000cps, 15 parts of fumed white carbon black, and 80 parts of silica into the kneader, keep the temperature at 150℃, and the vacuum degree at 0.06- Dehydrate and blend for 2 hours at 0.09MPa, grind twice through a mill, transfer to a high-speed dispersion stirring tank and cool to room temperature to obtain the base material. Add 8 parts of methyltrimethoxysilane at room temperature and 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 Base material mixing, keep the vacuum degree at -0.1-0.06MPa, keep the speed at 250rpm, stir for 1h, add 0.7 part of isopropyl titanate, stir, keep the vacuum degree at -0.1-0.06MPa, keep the speed at 250rpm, stir for 1h After discharging and filling into can...

Embodiment 3

[0024] According to weight fraction, put 100 parts of methyldimethoxy-terminated polydimethylsiloxane with a viscosity of 20000cps, nano-calcium carbonate 2, silicon powder 3, quartz powder 1 part, potassium oxide 65, barium oxide 35 parts Put it into the kneader, keep the temperature at 150℃, the vacuum degree is between 0.06-0.09MPa for dehydration and blending for 2h, grind it twice through the mill, then transfer it into the high-speed dispersion stirring tank and cool to room temperature to obtain the base material. Next, 4.5 parts of methyltrimethoxysilane, 1.5 parts of vinyltrimethoxysilane, 0.8 parts of γ-aminopropyltriethoxysilane, 0.8 parts of β-aminoethyl-γ-aminopropyltrimethoxysilane , 20 parts of alkoxy silicone oil, 10 parts of white oil, add to the high-speed dispersion stirring tank, mix with the base material, keep the vacuum degree at -0.1-0.06MPa, keep the speed at 250rpm, stir for 1h, add bis(ethyl acetoacetate) Ester) bis(isopropoxy) titanate complex 0.5 pa...

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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 specifically relates to a porcelainized flame-retardant fireproof silicone sealant and a preparation method thereof. Background technique [0002] Silicone sealant has excellent aging resistance, UV resistance, shock resistance, high and low temperature resistance, and can maintain elasticity in harsh climatic environments. Therefore, it is widely used in construction, automobiles, electronic and electrical, 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 also attracted more and more attention, which has also made the construction industry more demanding on the fireproof level of sealants. Come higher. Although ordinary flame-retardant silicone sealant has flame-retardant and self-extinguishing properties, it will bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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