A kind of preparation method of silane coupling agent and silicone sealant composition

A technology of silicone sealant and silane coupling agent, which is applied in the field of silicone rubber, can solve problems such as not being able to meet the bonding performance and use requirements, and achieve high bonding strength and good bonding effect

Active Publication Date: 2017-01-25
ZHEJIANG XINAN CHEM INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current conventional varieties of silane coupling agents cannot meet the requirements for use
In addition, the Chinese patent with the publication number CN101982516A discloses a high-performance acidic transparent silicone sealant, which is prepared by adding a UV absorber and a light stabilizer to a product with good adhesion, no whitening, and no yellowing, but it cannot satisfy Its adhesive properties after boiling in high temperature water

Method used

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  • A kind of preparation method of silane coupling agent and silicone sealant composition
  • A kind of preparation method of silane coupling agent and silicone sealant composition
  • A kind of preparation method of silane coupling agent and silicone sealant composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]

[0029]

[0030] The preparation method of the acidic transparent silicone sealant of this embodiment is as follows: first add α, ω-dihydroxy polydimethylsiloxane and dimethyl silicone oil in a high-speed planetary disperser, and after mixing evenly under vacuum -0.09MPa, Then add cross-linking agent, white carbon black, tackifier and catalyst, and mix uniformly in vacuum to prepare rubber compound.

[0031] The obtained acidic transparent silicone sealant was tested for water boiling resistance, adhesiveness, and yellowing performance, and the results are shown in Table 1.

Embodiment 2

[0033]

[0034] The preparation method of the acidic transparent silicone sealant of this embodiment is as follows: first add α, ω-dihydroxy polydimethylsiloxane and dimethyl silicone oil in a high-speed planetary disperser, and after mixing evenly under vacuum -0.09MPa, Then add cross-linking agent, white carbon black, tackifier and catalyst, and mix uniformly in vacuum to prepare rubber compound.

[0035] The obtained acidic transparent silicone sealant was tested for water boiling resistance, adhesiveness, and yellowing performance, and the results are shown in Table 1.

Embodiment 3

[0037]

[0038] The preparation method of the acidic silicone sealant of this embodiment is as follows: first add α, ω-dihydroxy polydimethylsiloxane and 10% simethicone oil in a high-speed planetary disperser, and mix evenly under vacuum-0.09MPa Finally, add crosslinking agent, white carbon black, the remaining 90% of simethicone, tackifier and catalyst, and mix uniformly in vacuum to prepare rubber.

[0039] The obtained acidic transparent silicone sealant was tested for water boiling resistance, adhesiveness, and yellowing performance. Refer to Table 2 for the results.

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Abstract

The invention provides a novel silane coupling agent, of which the structural formula is alkyl amide alkyl alkoxy silane, wherein the general formula is R<1>CONHR<2>Si(OR3)<3>; R<1> is univalent or bivalent hydrocarbon group of which the carbon atom number is 1-12; R<2> is bivalent alkylene group; R<3> is alkyl of which the carbon atom number is 1-8, preferably, methyl or ethyl. The novel silane coupling agent provided by the invention is used as a tackifier, so as to prepare a transparent acid silicone sealant. The sealant has the advantages of being high in bonding strength, and free of damage, free of yellowing and the like after being poached at high temperature.

Description

technical field [0001] The invention relates to the field of silicone rubber, in particular to a silane coupling agent and an acidic transparent sealant composed of it and a preparation method thereof. Background technique [0002] Silane coupling agent is a kind of organosilicon compound containing two kinds of different chemical properties in the molecule. It also has reactive groups in its molecule that can chemically combine with inorganic materials and organic materials (synthetic resins, etc.) Chemically bonded reactive groups that can be used for surface treatment, and adhesion promoters for sealants, adhesives, and coatings, etc. According to the type of reactive group, silane coupling agents are also called vinyl silane, amino silane, epoxy silane, mercapto silane and methacryloxy silane, etc. These organofunctional silanes are the most commonly used silane coupling agents. joint agent. [0003] Sealant is a sealing material made of hydroxyl-terminated polysiloxan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/18C09J183/06C09J11/04C09J11/06C09J11/08C09K3/10
Inventor 王伟徐晓明吴军艳何江周洪峰关国栋范峰强
Owner ZHEJIANG XINAN CHEM INDAL GROUP
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