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A kind of fireproof silicone sealant and preparation method thereof

A technology of silicone sealant and silane coupling agent, applied in the field of sealant, which can solve the problems of increasing the frequency of anti-repair, reducing the plugging effect, and weak interface force

Active Publication Date: 2021-12-03
湖南唯度节能材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the weak interface force between the inorganic filler and the organic flame retardant, the adhesive and the filler will peel off with the shrinkage of the organic component during its use, which reduces its plugging effect and increases the frequency of repairs

Method used

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  • A kind of fireproof silicone sealant and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] A fireproof silicone sealant, comprising α, ω-dihydroxypolydimethylsiloxane (100 parts), polydimethylsiloxane (35 parts), magnesium hydroxide (82 parts), aluminum hydroxide (18 parts), dimethyldimethoxysilane (12 parts), dioctylene dilaurate (1.5 parts), diethanolamine acetate (1 part); The viscosity of methyl siloxane is 5200mPa.s;

[0022] The preparation technology of described fireproof sealant comprises the steps:

[0023] (1) weigh each formula component respectively for subsequent use;

[0024] (2) Prepare 2 g of weighed diethanolamine acetate into a 10% aqueous solution, then add it to the stirred reactor, add 164 g of magnesium hydroxide and 36 g of aluminum hydroxide in sequence under stirring, and then raise the temperature Continue to stir vigorously at 85°C. With the volatilization of water, the diethanolamine acetate is evenly coated on the surface of the flame retardant magnesium hydroxide and aluminum hydroxide. Continue to stir until there is no liqu...

Embodiment 2

[0027] A fireproof silicone sealant comprising α, ω-dihydroxypolydimethylsiloxane (100 parts), polydimethylsiloxane (35 parts), magnesium hydroxide (64 parts), aluminum hydroxide (36 parts), vinyltrimethoxysilane (12 parts), dibutyltin dilaurate (1.5 parts), triethanolamine acetate (1.5 parts); the α, ω-dihydroxypolydimethylsiloxane The viscosity of alkane is 5200mPa.s;

[0028] The preparation technology of described fireproof sealant comprises the steps:

[0029] (1) weigh each formula component respectively for subsequent use;

[0030] (2) 3 g of the weighed triethanolamine acetate is formulated into a 10% aqueous solution, and then it is added to the stirred reactor, and 128 g of magnesium hydroxide and 72 g of aluminum hydroxide are added successively under stirring conditions, and then the temperature is raised Continue to stir vigorously at 85°C. With the volatilization of water, the triethanolamine acetate is evenly coated on the surface of the flame retardant magnes...

Embodiment 3

[0033] A fireproof silicone sealant, comprising α, ω-dihydroxy polydiethylsiloxane (100 parts), polydimethylsiloxane (35 parts), magnesium oxide (50 parts), aluminum oxide (50 parts parts), vinyltrimethoxysilane (12 parts), dibutyltin dilaurate (1.5 parts), triethanolamine formate (1.5 parts); the α, ω-dihydroxypolydimethylsiloxane Viscosity 12300mPa.s;

[0034] The preparation technology of described fireproof sealant comprises the steps:

[0035] (1) weigh each formula component respectively for subsequent use;

[0036] (2) The weighed triethanolamine formate 3g is mixed with 10% aqueous solution, then it is added in the stirring reaction kettle, magnesia 100g, aluminum oxide 100g are added successively under the stirring condition, then the temperature is raised to 85 ℃, continue to stir vigorously, and with the volatilization of water, triethanolamine formate is evenly coated on the surface of flame retardant magnesium oxide and aluminum oxide. Continue to stir until th...

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Abstract

The invention relates to a fireproof silicone sealant, which specifically comprises the following components: α,ω-dihydroxypolysiloxane (80-100 parts), polydimethylsiloxane (1-50 parts), flame retardant agent (50-100 parts), silane coupling agent (2-24 parts), catalyst (0.5-3 parts), bonding agent (0.2-2 parts); the bonding agent is an ionic liquid compound that can utilize hydrogen bonds The force and electrostatic force interact with the flame retardant particles to achieve functional coating modification, and the modified flame retardant particles can be further cross-linked with the binder components to improve the mechanical properties. At the same time, the present invention also provides a preparation method of the sealant, which combines the preparation of the base material and the preparation of the sealant into one, which simplifies the operation process.

Description

technical field [0001] The invention belongs to the technical field of sealants, and in particular relates to a novel fireproof silicone sealant and a preparation method thereof. Background technique [0002] In recent years, fire protection of building materials has become an important field in the research and production of building materials. Among them, the sealant material used for fireproof sealing is an important field of research. While meeting the fireproof requirements, it must also have good adhesion to various substrates. Traditional sealing materials such as fireproof cement may harden overall and bond poorly with the base material after 2-3 years of installation. [0003] In order to further improve the plugging effect, the plugging agent needs to be modified. Silicone sealant is a kind of organic-inorganic composite adhesive, which interacts with the base material by strong chemical bonds, resulting in stronger sticking effect and more durable use. At the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/04C09J11/04C09J11/06
Inventor 不公告发明人
Owner 湖南唯度节能材料有限公司