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Preparation method of industrial silicone sealant

A silicone sealant, an industrial technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve problems such as reduced sealing performance, abnormal industrial production, and slow flame extinguishing speed

Inactive Publication Date: 2021-01-05
佛山巨马新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing industrial silicone sealant has poor flame retardancy, and the flame extinguishment speed is slow when burning, and it is easy to cause a large loss, and when used in some high-temperature environments, the sealing performance will be reduced, which will make the industry Production cannot proceed normally

Method used

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  • Preparation method of industrial silicone sealant
  • Preparation method of industrial silicone sealant
  • Preparation method of industrial silicone sealant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A preparation method of industrial silicone sealant, the silicone sealant is made of the following raw materials in parts by weight: 100 parts of α,ω-dihydroxypolydimethylsiloxane, 5 parts of methyltriacetoxysilane , 3 parts of dibutyltin dilaurate, 3 parts of γ-methacryloxypropyl trimethoxysilane, 8 parts of flame retardant, 10 parts of high temperature resistant filler;

[0044] The preparation method of this silicone sealant comprises the steps:

[0045] Step S1: Add α,ω-dihydroxypolydimethylsiloxane, flame retardant, and high-temperature-resistant filler into the kneader, and knead for 3 hours at a temperature of 140°C and a vacuum of 0.05MPa to obtain Base glue;

[0046] Step S2: Add methyltriacetoxysilane, dibutyltin dilaurate, and γ-methacryloxypropyltrimethoxysilane to the base glue, and make the Stirring is carried out for 2 hours under the same conditions to obtain a silicone sealant.

[0047] The preparation method of this silicone sealant comprises the st...

Embodiment 2

[0061] A preparation method of industrial silicone sealant, the silicone sealant is made of the following raw materials in parts by weight: 110 parts of α,ω-dihydroxypolydimethylsiloxane, 6 parts of methyltriacetoxysilane , 4 parts of dibutyltin dilaurate, 4 parts of γ-methacryloxypropyl trimethoxysilane, 9 parts of flame retardant, 13 parts of high temperature resistant filler;

[0062] The preparation method of this silicone sealant comprises the steps:

[0063] Step S1: Add α,ω-dihydroxy polydimethylsiloxane, flame retardant, and high-temperature-resistant filler into the kneader, and knead for 4 hours at a temperature of 150°C and a vacuum of 0.06MPa to obtain Base glue;

[0064] Step S2: Add methyltriacetoxysilane, dibutyltin dilaurate, and γ-methacryloyloxypropyltrimethoxysilane to the base rubber, in a vacuum with a rotation speed of 110r / min and a vacuum of 0.06MPa Stirring is carried out for 3 hours under the same conditions to obtain a silicone sealant.

[0065] T...

Embodiment 3

[0079] A preparation method of industrial silicone sealant, the silicone sealant is made of the following raw materials in parts by weight: 120 parts of α,ω-dihydroxypolydimethylsiloxane, 8 parts of methyltriacetoxysilane , 5 parts of dibutyltin dilaurate, 5 parts of γ-methacryloxypropyl trimethoxysilane, 10 parts of flame retardant, 15 parts of high temperature resistant filler;

[0080] The preparation method of this silicone sealant comprises the steps:

[0081] Step S1: Add α,ω-dihydroxy polydimethylsiloxane, flame retardant, and high-temperature-resistant filler into the kneader, and knead for 5 hours at a temperature of 160°C and a vacuum of 0.08MPa to obtain Base glue;

[0082] Step S2: Add methyltriacetoxysilane, dibutyltin dilaurate, and γ-methacryloxypropyltrimethoxysilane to the base glue, and make the Stirring is carried out for 3 hours under the same conditions to obtain a silicone sealant.

[0083] The preparation method of this silicone sealant comprises the ...

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Abstract

The invention discloses a preparation method of an industrial silicone sealant. The silicone sealant is prepared from the following raw materials in parts by weight: 100-120 parts of alpha, omega-dihydroxypolydimethylsiloxane, 5-8 parts of a cross-linking agent, 3-5 parts of a catalyst, 3-5 parts of a coupling agent, 8-10 parts of a flame retardant and 10-15 parts of a high-temperature-resistant filler. The silicone sealant is used as a raw material, the flame retardant and the high-temperature-resistant filler are prepared, the flame retardant can generate a large amount of inorganic phosphoric acid during combustion, the silicone sealant is dehydrated and carbonized to form a carbon layer, the carbon layer can prevent invasion of oxygen and overflow of combustible gas, then matrix combustion is prevented, when the high-temperature-resistant filler and the flame retardant are mixed for use, the flame retardant effect of the silicone sealant is improved, meanwhile, the graphene oxide is of a quasi-two-dimensional limited structure, polymer molecules are bound between layers of the graphene oxide, free movement of molecular chains and segment chains is limited, and then the high temperature resistance of the silicone sealant is improved.

Description

technical field [0001] The invention belongs to the technical field of sealant preparation, and in particular relates to a preparation method of industrial silicone sealant. Background technique [0002] Silicone sealant is a kind of sealant, which belongs to the same system as glass glue, that is, a substance formed of materials such as sodium silicate, silicone and silicone structural polymers. Silicone sealant has excellent resistance to weather, humidity, ultraviolet rays and ozone aging, and is one of the preferred materials for building sealants; with the development and progress of society, the demand for silicone sealants is increasing. Over the past ten years, it has developed rapidly. At present, silicone sealants are basically used in domestic civil aluminum alloy doors and windows, building curtain walls, stone caulking and decoration. [0003] The existing industrial silicone sealant has poor flame retardancy, and the flame extinguishment speed is slow when bu...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/04C08G73/06
CPCC08G73/0638C08G73/065C08K2003/2227C08L2201/02C08L2201/08C09J11/04C09J183/04C08L79/04C08K13/06C08K9/06C08K3/22C08K9/04C08K3/042
Inventor 王彬罗伟陈海东邓戈黎春湄黄日东梁倩映杨小玲王利任春方
Owner 佛山巨马新材料有限公司
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