Two-component organosilicon pouring sealant and preparation method thereof

A silicone potting glue, a two-component technology, applied in the field of potting glue, can solve the problems of silicone potting glue production efficiency and product quality, catalyst poisoning, etc., to achieve excellent bonding performance, easy operation, and use less effect

Active Publication Date: 2017-07-14
广东皓明有机硅材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent application CN102408869A discloses an addition-type silicone potting compound, and its adhesion promoter is a nitrogen-containing silane compound, but the nitrogen-containing silane compound is likely to poison the catalyst, which affects the production efficiency and product quality of the silicone potting compound. quality impact

Method used

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  • Two-component organosilicon pouring sealant and preparation method thereof
  • Two-component organosilicon pouring sealant and preparation method thereof
  • Two-component organosilicon pouring sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation of embodiment 1 base material

[0032] 100 parts of linear vinyl polydimethylsiloxane with a viscosity of 500 mPa.s and a vinyl content of 0.4 wt%, 260 parts of aluminum oxide with an average particle size of 5 μm, and aluminum hydroxide with an average particle size of 10 μm 40 parts were added into a vacuum kneader and mixed evenly, and then dehydrated and blended for 60 minutes at a temperature of 140° C. and a vacuum degree of 0.08 Mpa to obtain a base material.

Embodiment 2

[0033] Example 2 Two-component silicone potting glue

[0034] Two-component silicone potting compound, including equal mass of A component and B component; A component includes 100 parts of the base material of Example 1, platinum catalyst and 4 parts of adhesion promoter 1; the B component Including 100 parts of the base material of Example 1, 10 parts of crosslinking agent and 0.01 part of inhibitor; the platinum catalyst is a vinyl siloxane complex of chloroplatinic acid, wherein the content of platinum in the A component is 10ppm; The joint agent is a hydrogen-containing silicone oil with a hydrogen content of 0.36%, and the inhibitor is 1-ethynyl-1-cyclohexanol; the adhesion promoter 1 is a nitrogen-containing heterocyclic polycyclic siloxane selected from

[0035]

[0036] Its preparation method comprises the following steps:

[0037] S1: base material is prepared as in Example 1;

[0038] S2: Add the vinyl siloxane complex of chloroplatinic acid to 100 parts of the...

Embodiment 3

[0041] Example 3 Two-component silicone potting glue

[0042]Two-component silicone potting glue, including equal mass of A component and B component; A component includes 100 parts of the base material of Example 1, platinum catalyst and 4 parts of adhesion promoter 2; the B component Including 100 parts of the base material of Example 1, 10 parts of crosslinking agent and 0.01 part of inhibitor; the platinum catalyst is a vinyl siloxane complex of chloroplatinic acid, wherein the content of platinum in the A component is 10ppm; The joint agent is a hydrogen-containing silicone oil with a hydrogen content of 0.36%, and the inhibitor is 1-ethynyl-1-cyclohexanol; the adhesion promoter 2 is a nitrogen-containing heterocyclic polycyclic siloxane selected from

[0043] The preparation method is the same as in Example 2.

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Abstract

The invention provides a two-component organosilicon pouring sealant. The two-component organosilicon pouring sealant comprises a component A and a component B with equal mass, wherein the component A comprises 100 parts of a base material, a platinum catalyst with the mass of platinum accounting for 1 to 500 ppm of the mass of the component A, and 1 to 5 parts of an adhesion promoter; the component B comprises 100 parts of a base material, 0.2 to 20 parts of a crosslinking agent and 0.002 to 0.5 part of an inhibitor; and the adhesion promoter is nitrogen heterocycle containing polycyclic siloxane. The invention belongs to the technical field of pouring sealants. The two-component organosilicon pouring sealant provided by the invention has the advantages of good flame-retardant performance, adhesion properties with a substrate, excellent fluidity, no poisoning caused by a platinum catalyst, environmental protection, safety, and easy operation.

Description

technical field [0001] The invention belongs to the technical field of potting glue, and in particular relates to a two-component silicone potting glue and a preparation method thereof. Background technique [0002] Silicone materials have excellent electrical insulation properties, and are ideal for water resistance and UV resistance, so they are commonly used electronic potting materials. The addition type silicone potting compound does not release heat during vulcanization, no low molecular by-products are formed, the shrinkage rate is small, and it can be cured deeply. After vulcanization, it can maintain elasticity for a long time in the temperature range of -65 ° C to 200 ° C, and has excellent electrical properties. And chemical stability, water resistance, UV resistance and weather aging resistance are ideal. However, due to the low molecular polarity of the addition-type silicone potting compound, its bonding performance with the substrate, especially the plastic s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/05C09J11/04C09J11/06
CPCC08K2201/014C08L2201/02C08L2201/22C08L2203/206C08L2205/025C08L2205/03C09J11/04C09J11/06C09J183/04C08L83/04C08K13/02C08K5/5477C08K2003/2227
Inventor 王佐程宪涛张利利吴向荣靳利敏
Owner 广东皓明有机硅材料有限公司
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