Single-component high-temperature-soaking-resistant silicone adhesive and preparation method and application thereof

A technology of silicone glue and acyloxysilane, which is applied in adhesives, climate change adaptation, non-polymer adhesive additives, etc., can solve the problem of unfavorable biological health organotin catalysts, silicone glue with poor high temperature and water immersion resistance, and limited products Export and other issues, to achieve the effect of long storage shelf life, improved mechanical properties, and convenient operation

Active Publication Date: 2021-01-29
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned silicone rubber has poor high temperature and water immersion resistance, short storage time, and the addition of organotin catalysts that are not conducive to biological health, which limits the export of products

Method used

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  • Single-component high-temperature-soaking-resistant silicone adhesive and preparation method and application thereof
  • Single-component high-temperature-soaking-resistant silicone adhesive and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The raw material components of silicone glue: 100 parts of dihydroxypolydimethylsiloxane with a viscosity of 135000cP, 20 parts of dihydroxypolydimethylsiloxane with a viscosity of 750cP, 3.8 parts of methyltriacetoxysilane, 1.1 parts of ethyl triacetoxysilane, 0.005 parts of tetrabutyl titanate, 12.5 parts of fumed white carbon black processed by D4, vinyl silsesquioxane copolymer (particle size is 250nm, molecular weight 1912g / mol, polymerized Degree 4, molecular weight distribution is 1.7) 14.5 parts.

[0050] Preparation:

[0051] 1) Mix dihydroxypolydimethylsiloxane, methyltriacetoxysilane, and ethyltriacetoxysilane with two viscosities according to the above ratio, and stir evenly;

[0052] 2) Add the above amount of D4-treated fumed silica to the mixture obtained in step 1), and mix and stir evenly;

[0053] 3) Add the above amount of catalyst and vinyl silsesquioxane copolymer to the mixture obtained in step 2), mix and stir evenly to obtain silicone glue.

Embodiment 2

[0055] The raw material components of silicone glue: 100 parts of dihydroxypolydimethylsiloxane with a viscosity of 135000cP, 11.7 parts of dihydroxypolydimethylsiloxane with a viscosity of 750cP, dimethylpolydimethylsiloxane with a viscosity of 100cP 26.8 parts of polysiloxane, 8.4 parts of mixture of oligoethylacetoxysilane and oligomethylacetoxysilane with a degree of polymerization of 3 (among them, oligoethylacetoxysilane and oligomethylacetoxy The weight ratio of base silane is 1:1), 0.005 parts of tetrabutyl titanate, 15.5 parts of untreated white carbon black, vinyl silsesquioxane copolymer (particle size is 300nm, molecular weight 1586g / mol, degree of polymerization 2. The molecular weight distribution is 1.75) 10 parts.

[0056] The preparation process refers to Example 1. The difference from Example 1 is that in step 1) of this example, dihydroxypolydimethylsiloxane, dimethylpolydimethylsiloxane, oligomerization The mixture of ethyl and methyl acetoxysilane is mixe...

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Abstract

The invention relates to a single-component high-temperature-soaking-resistant silicone adhesive and a preparation method and application thereof. The silicone adhesive is prepared from the followingcomponents in parts by weight: 90-150 parts of dihydroxy polydimethylsiloxane, 0-60 parts of dimethyl polydimethylsiloxane, 1-15 parts of an acyloxy silane cross-linking agent, 5-50 parts of filler, 0.002-0.5 part of a catalyst and 1-20 parts of a coupling agent. The silicone adhesive has excellent high-temperature soaking resistance and relatively long storage shelf life, and the silicone adhesive is maintained not liable to yellow without adding an anti-yellowing agent. The extrusion rate, the strength, the elongation and other mechanical properties of the silicone adhesive are well improved. The product is simple in production process and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and relates to a single-component high-temperature-resistant water-immersion silicone adhesive and a preparation method and application thereof. Background technique [0002] As a glass container for raising ornamental fish, fish tanks appear more and more frequently in modern people's lives. It not only adjusts people's life interest, but also adds a natural atmosphere to home or office space. The tightness and structural stability of the fish tank are related to the type and performance of the sealant used, and the quality of the sealant directly determines the quality of the fish tank. [0003] Due to the good adhesion of acid silicone glue to glass, and its simple process and low cost, acid silicone glue is generally used in China to bond fish tanks. However, because the fish tank glue needs to be in contact with water for a long time and requires good adhesion, ordinary acid glue may not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J183/07C09J11/04C09J11/06
CPCC09J183/04C09J11/04C09J11/06C08L2205/03C08L2205/025C08L2201/08C08L2205/035C08L83/04C08K9/06C08K7/26C08K5/5419Y02A40/81
Inventor 叶明何丹丹苏乐
Owner JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
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