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Preparation method of silane coupling agent and silicone sealant composition

A technology of silane coupling agent and silicone sealant, applied in the field of silicone rubber, can solve the problems of not meeting the requirements for use, not meeting the bonding performance, etc., and achieve the effect of good bonding effect and high bonding strength

Active Publication Date: 2014-05-14
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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  • Preparation method of silane coupling agent and silicone sealant composition
  • Preparation method of silane coupling agent and silicone sealant composition
  • Preparation method of silane coupling agent and silicone sealant composition

Examples

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 mix uniformly under vacuum -0.09MPa, Then add cross-linking agent, white carbon black, tackifier and catalyst, and vacuum mix uniformly to prepare rubber compound.

[0031] The obtained acidic transparent silicone sealant was tested for boiling resistance, adhesiveness, and yellowing performance. The results refer to 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 mix uniformly under vacuum -0.09MPa, Then add cross-linking agent, white carbon black, tackifier and catalyst, and vacuum mix uniformly to prepare rubber compound.

[0035] The obtained acidic transparent silicone sealant was tested for boiling resistance, adhesiveness, and yellowing performance. The results refer to 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% dimethyl silicone oil in the high-speed planetary disperser, and mix well under vacuum -0.09MPa Then, add cross-linking agent, white carbon black, remaining 90% dimethyl silicone oil, tackifier and catalyst, and vacuum mix uniformly to prepare rubber compound.

[0039] The obtained acidic transparent silicone sealant was tested for boiling resistance, adhesiveness, and yellowing performance. The results are shown in Table 2.

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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 acid transparent sealant composed of the silane coupling agent and a preparation method thereof. Background technique [0002] Silane coupling agent is a kind of organosilicon compound containing two groups of different chemical properties in the molecule at the same time. It has reactive groups that can chemically combine with inorganic materials and organic materials (synthetic resin, etc.) in the molecule. The chemically bonded reactive group can be used for surface treatment, and as a tackifier for sealants, adhesives and coatings. According to the types of reactive groups, silane coupling agents are also called vinyl silanes, amino silanes, epoxy silanes, mercapto silanes, and methacryloxy silanes. These organofunctional silanes are the most commonly used silane couplings. Joint agent. [0003] Sealant is a kind of sealing material made of hydroxy-ter...

Claims

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Application Information

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Patent Type & Authority Applications(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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