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Environment-friendly built-in sealant and preparation method thereof

A green and environmentally friendly sealant technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of long bonding and positioning time and slow curing speed of room temperature vulcanized silicone rubber, and improve the decoration work. Efficiency and quality assurance, the effect of improving adhesion and improving curing efficiency

Inactive Publication Date: 2019-10-11
江苏华硅新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a green and environment-friendly interior sealant and its preparation method, which solves the problems of long bonding and positioning time and slow curing speed of single-component room temperature vulcanized silicone rubber

Method used

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  • Environment-friendly built-in sealant and preparation method thereof

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Effect test

Embodiment 1

[0027] A green environment-friendly interior sealant, comprising the following components by weight: 100 parts by weight of hydroxyl-terminated polydimethylsiloxane, 80 parts by weight of hydrophobic silicon dioxide, 30 parts by weight of methyl silicone oil, 7 parts by weight of vinyl tri Ethoxysilane, 3 parts by weight of butyl titanate, 8 parts by weight of hydrophobic fumed silica, 1 to 2 parts by weight of γ-glycidyl etheroxypropyl triethoxy, 0.1 parts by weight of organic bismuth, wherein the hydrophobic two The ratio of silicon oxide to hydrophobic fumed silica is 10:1, and the ratio of butyl titanate to organic bismuth is 30:1.

Embodiment 2

[0029] A green environment-friendly interior sealant, comprising the following components by weight: 100 parts by weight of hydroxyl-terminated polydimethylsiloxane, 90 parts by weight of hydrophobic silicon dioxide, 30 parts by weight of methyl silicone oil, 7 parts by weight of vinyl tri Ethoxysilane, 3.6 parts by weight of butyl titanate, 9 parts by weight of hydrophobic fumed silica, 1 to 2 parts by weight of γ-glycidyl etheroxypropyl triethoxy, 0.12 parts by weight of organic bismuth, wherein the hydrophobic two The ratio of silicon oxide to hydrophobic fumed silica is 10:1, and the ratio of butyl titanate to organic bismuth is 30:1.

Embodiment 3

[0031] A green environment-friendly interior sealant, comprising the following components by weight: 100 parts by weight of hydroxyl-terminated polydimethylsiloxane, 100 parts by weight of hydrophobic silicon dioxide, 30 parts by weight of methyl silicone oil, 7 parts by weight of vinyl tri Ethoxysilane, 4.5 parts by weight of butyl titanate, 10 parts by weight of hydrophobic fumed silica, 1 to 2 parts by weight of γ-glycidyl etheroxypropyl triethoxy, 0.15 parts by weight of organic bismuth, wherein, hydrophobic two The ratio of silicon oxide to hydrophobic fumed silica is 10:1, and the ratio of butyl titanate to organic bismuth is 30:1.

[0032] A preparation method of a green environment-friendly interior sealant, comprising the following steps:

[0033] 1) Stir 100 parts by weight of hydroxyl-terminated polydimethylsiloxane and 80 to 100 parts by weight of hydrophobic silica at a vacuum of 0.085 to 0.1 MPa and a temperature of 120 to 140 degrees Celsius for 90 to 120 minute...

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Abstract

The invention discloses an environment-friendly built-in sealant which is prepared from hydroxyl-terminated polydimethylsiloxane, hydrophobic silicon dioxide, vinyltriethoxysilane, butyl titanate, organic bismuth and the like. The invention also relates to a preparation method of the environment-friendly built-in sealant. According to the preparation method of the environment-friendly built-in sealant, the components are put into a reaction kettle in sequence and are fully stirred under the corresponding conditions. According to the method, the cured dealcoholized silicone sealant can be quickly prepared by adding the vinyltriethoxysilane and has a certain tensile strength in a short time, so that the decoration working efficiency and the quality guarantee can be effectively improved in the indoor decoration industry; by creatively adding butyl titanate and a supplemented organic ruthenium catalyst, the butyl titanate serves as a tackifier for improving polymer adhesion, not only provided rapid cross-linking reaction can be, but also the adhesion of a polymer system is improved, and the curing efficiency and the initial tensile strength in a short time can be further improved.

Description

technical field [0001] The invention relates to the technical field of polymer sealing materials, in particular to a green and environment-friendly interior sealant and a preparation method thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection, higher environmental protection requirements have been put forward for the materials used in the home improvement industry. With its relatively simple processing method, room temperature curing silicone rubber can be vulcanized into a three-dimensional network structure at room temperature with the help of moisture in the air, and has the characteristics of cold resistance, heat resistance, waterproof, moisture resistance, and high stretching fatigue strength. , is widely used in sealing caulking joints in construction, automobile, electronics and other industries. [0003] One-component room temperature curing silicone rubber can be divided into deacetic acid type, deketoxime t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/04C09J11/06
CPCC08L2205/025C09J11/04C09J11/06C09J183/04C08L83/04C08K13/02C08K3/36C08K5/5425C08K5/5435C08K5/10
Inventor 杨令勇
Owner 江苏华硅新材料科技有限公司
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