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Bi-component organic silicon pouring sealant and preparation method thereof

A silicone potting, two-component technology, used in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of restricted product lines, long curing time, low production efficiency, etc. The effect of production efficiency, good fluidity, and ease of mass production

Inactive Publication Date: 2020-12-11
湘潭市特种线缆股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems of silicone potting adhesives in the prior art, which generally have a long curing time, low production efficiency, and severely restrict the product line with strong demand, the present invention provides a silicone potting compound with simple components, low manufacturing difficulty and suitable for mass production. Silicone potting glue and preparation method thereof

Method used

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  • Bi-component organic silicon pouring sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example provides a two-component silicone encapsulant whose raw materials include component A and component B,

[0033] Component A is composed of 30-40 parts by weight of vinyl polydimethylsiloxane, 10-40 parts by weight of filler and 0.1-4 parts by weight of curing accelerator;

[0034] Component B consists of 0-25 parts by weight of hydrogen-containing silicone oil, 10-40 parts by weight of filler, 0.1-0.4 parts by weight of alkynyl cyclohexanol, 0.1-0.4 parts by weight of high-activity platinum complex, and 1-12 parts by weight of even Joint composition;

[0035] Among them, the mass ratio of component A to component B is 1:1, the hydrogen-containing silicone oil is a methyl-terminal hydrogen-containing silicone oil with a hydrogen content of 0.25% to 0.38%, and the platinum content in the highly active platinum complex is 11130ppm~ 20200ppm.

[0036] In this embodiment, the raw materials of the two-component silicone encapsulant include component A and compo...

Embodiment 2

[0049] This example provides a specific implementation. The raw materials of a two-component silicone encapsulant include component A and component B, wherein component A consists of 30 parts by weight of vinyl polydimethylsiloxane, 20 parts by weight It consists of 20 parts by weight of filler and 1 part by weight of curing accelerator. Component B consists of 20 parts by weight of methyl-terminal hydrogen-containing silicone oil with a hydrogen content of 0.25% to 0.38%, 20 parts by weight of filler, 0.1 part by weight of alkynyl cyclohexanol, It is composed of 0.2 parts by weight of highly active platinum complex with a platinum content of 11130 ppm to 20200 ppm and 4 parts by weight of a coupling agent.

[0050] When preparing, firstly pre-treat the fillers required for components A and B, that is, dry them; then prepare components A and B respectively, and then mix components A and B by 1: The mass ratio of 1 can be quickly obtained by mixing the silicone potting compound...

Embodiment 3

[0052] This example provides a specific implementation. The raw materials of a two-component silicone potting adhesive include component A and component B, wherein component A consists of 35 parts by weight of vinyl polydimethylsiloxane, 25 parts by weight Parts by weight of filler and 1 part by weight of curing accelerator, component B consists of 20 parts by weight of methyl-terminal hydrogen-containing silicone oil with a hydrogen content of 0.25% to 0.38%, 25 parts by weight of filler, 0.2 part by weight of alkynyl cyclohexanol, It is composed of 0.3 parts by weight of highly active platinum complex with a platinum content of 11130 ppm to 20200 ppm and 8 parts by weight of a coupling agent.

[0053] When preparing, firstly pre-treat the fillers required for components A and B, that is, dry them; then prepare components A and B respectively, and then mix components A and B by 1: The mass ratio of 1 can be quickly obtained by mixing the silicone potting compound evenly, and ...

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Abstract

The invention provides a bi-component organic silicon pouring sealant, which comprises a component A and a component B, wherein the component A is composed of vinyl polydimethylsiloxane, a filler anda curing accelerator, and the component B is composed of hydrogen-containing silicone oil, a filler, alkynyl cyclohexanol, a high-activity platinum complex and a coupling agent. In the invention, theraw materials of the bi-component organic silicon pouring sealant comprise the component A and the component B, the component A is composed of vinyl polydimethylsiloxane, the filler and the curing accelerator in corresponding parts by weight, the component B is composed of the hydrogen-containing silicone oil, the filler, alkynyl cyclohexanol, the high-activity platinum complex and the coupling agent in corresponding parts by weight, then the component A and the component B are mixed according to the mass ratio of 1: 1, the obtained bi-component organic silicon pouring sealant can be rapidly cured under the condition of normal temperature, the added high-activity platinum complex can enable the component A and the component B to react more rapidly, fully and thoroughly after being mixed, the production efficiency is greatly improved, volume production is facilitated, and the pouring sealant has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a two-component silicone potting glue. The invention also relates to a preparation method of a two-component silicone potting glue. [0002] technical background [0003] In the electronics industry, in order to improve the stability and reliability of the components and the whole machine, it is often necessary to pot the electronic components or assembly parts. Except for the lead wires or connectors, the whole part is wrapped and sealed by the potting compound. The outside atmosphere is isolated to ensure that the whole machine can still work normally in environments such as vibration, high humidity, drastic temperature changes, and air pollution. The most commonly used potting materials are epoxy resin, polyurethane and silicone. Because silicone has excellent properties such as high and low temperature resistance, weather resistance, moisture resistance, electrical i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/06C09J11/04
CPCC08K2003/2227C08K2003/2241C08K2003/3045C08K2003/385C08K2201/011C08K2201/014C08L2205/025C09J11/04C09J11/06C09J183/04C08L83/04C08K13/02C08K3/36C08K3/38C08K3/30C08K7/26C08K3/22C08K5/05C08K5/544C08K5/5419
Inventor 柳朝阳
Owner 湘潭市特种线缆股份有限公司
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