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Dealcoholized silicone sealant and preparation method thereof

A silicone sealant, dealcoholization technology, applied in chemical instruments and methods, adhesives, other chemical processes, etc., can solve the problems of transparency, unsatisfactory yellowing, unstable storage, and adhesiveness to be improved, etc. Achieve the effects of poor compatibility, high transparency and poor stability

Active Publication Date: 2014-01-01
GUANGZHOU GLORYSTAR CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese patent application with the application number 200710048349.2 discloses a one-component room temperature rapid vulcanization dealcoholized silicone structural sealant and its manufacturing method, in order to improve the storage stability and cohesiveness of the

Method used

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  • Dealcoholized silicone sealant and preparation method thereof
  • Dealcoholized silicone sealant and preparation method thereof
  • Dealcoholized silicone sealant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1: 100 parts of trimethoxysiloxy polydimethylsiloxane with a viscosity of 10Pa·S at 25°C, 10 parts of morpholinomethyltrimethoxysilane, and a BET specific surface area of ​​150m 2 / g of hydrophilic fumed silica 11 parts, γ-aminopropyltrimethoxysilane 1 part, γ-glycidoxypropyltrimethoxysilane 0.5 parts, di-n-butyltin diacetate 0.02 parts Add 5 parts of polydimethylsiloxane with a molecular end methyl group with a viscosity of 0.1Pa·S at 25°C into a planetary mixer and mix at high speed for 60 minutes under anhydrous conditions to make dealcoholized silicone sealant. Store in a sealed dry plastic bottle.

Embodiment 2

[0026] Example 2: 50 parts of triethoxysiloxy polydimethylsiloxane with a viscosity of 1.5 Pa·S at 25°C and a diethoxymethylsiloxy with a viscosity of 1 Pa·S at 25°C 50 parts of polydimethylsiloxane, 16 parts of morpholinomethyltrimethoxysilane, BET specific surface area 150m 2 / g of hydrophobic fumed white carbon black treated with silazane on the surface, 0.5 part of N-(β-aminoethyl)-γ-aminopropyltriethoxysilane, 0.29 part of di-n-butyltin diacetate , 25 ℃ viscosity of 2Pa·S molecular terminal methyl polydimethylsiloxane 20 parts into the planetary mixer, under anhydrous conditions, high-speed mixing for 80 minutes to make dealcoholized silicone sealant, save In a sealed dry plastic bottle.

Embodiment 3

[0027] Example 3: 30 parts of triethoxysiloxy polydimethylsiloxane with a viscosity of 20 Pa·S at 25°C and a diethoxymethylsiloxy polydimethylsiloxane with a viscosity of 80 Pa·S at 25°C 70 parts of dimethylsiloxane, 5 parts of morpholinomethyltriethoxysilane, BET specific surface area 150m 2 / g of hydrophobic fumed silica treated with octamethyltetracyclosiloxane, 1 part of γ-aminopropyltriethoxysilane, 0.4 part of di-n-butyltin dilaurate, viscosity at 25°C Add 5 parts of 2Pa·S molecular terminal methyl polydimethylsiloxane into a planetary mixer, mix at high speed for 110 minutes under anhydrous conditions, to make dealcoholized silicone sealant, and store it in a sealed dry plastic In the bottle.

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Abstract

The invention provides a dealcoholized silicone sealant and a preparation method thereof. The formula of the sealant comprises the following components in parts by weight: 100 parts by weight of poly-alkoxy silicyl polydimethylsiloxane, 1-20 parts by weight of cross-linking agent, 1-50 parts by weight of gaseous phase white carbon black, 0.1-10 parts by weight of tackifier, 0.001-1 part by weight of catalyst and 0-30 parts by weight of silicone oil plasticizer, wherein the viscosity of the poly-alkoxy silicyl polydimethylsiloxane at 25 DEG C is 0.1 Pa.S to 500 Pa.S; the cross-linking agent is one or more of morpholinyl methyl trialkoxy silane or partial hydrolysis condensates thereof; the catalyst is an organic tin compound. The dealcoholized silicone sealant provided by the invention has the characteristics of good transparency, low yellowing, storage stability, excellent adhesion and the like.

Description

Technical field [0001] The invention relates to a dealcoholized silicone sealant and a preparation method thereof, and belongs to the field of organic silicon sealing materials. Background technique [0002] With the rapid development of electronics and electrical appliances, automobile transportation, civil construction, office machinery and other industries, dealcoholized silicone sealants have become the industry and research due to the advantages of non-corrosion, non-toxicity, convenient use and low price for most materials. Research hotspots of institutions and universities. And in many fields, dealcoholized silicone sealant has been widely used, such as printed circuit board coating, electronic and electrical parts bonding and fixing, automobile, LED lamp assembly, door and window sealing, mirror or handicraft bonding Sealing, etc., its development prospects are very impressive. [0003] At present, many well-known silicone sealant companies at home and abroad prepare one-...

Claims

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Application Information

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IPC IPC(8): C09J183/06C09J11/04C09J11/06C09K3/10
Inventor 黄德裕屈哲辉赖观品何宗业胡新嵩
Owner GUANGZHOU GLORYSTAR CHEM
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