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Double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant

A technology of silicone potting glue and room temperature curing, which is applied in the direction of non-polymer adhesive additives, adhesives, adhesive additives, etc., can solve the problems of poisoning and unusability of addition-type liquid silicone rubber, and improve thermal conductivity and fluidity, high filling amount, and the effect of improving flame retardancy

Active Publication Date: 2014-04-30
西卡(江苏)工业材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various aminosilanes commonly used in condensation liquid silicone rubber have good adhesion to PC, but they cannot be used due to their poisonous effect on addition liquid silicone rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Preparation of the base material: Add 100 parts of vinyl silicone oil, 150 parts of aluminum oxide, and 30 parts of aluminum hydroxide into a high-speed disperser and mix evenly, vacuumize and defoam to prepare the base material. Among them, alumina contains alumina raw materials with two particle sizes of 5 μm and 15 μm, which are prepared by mixing according to the ratio of parts by mass of 1:2.

[0016] (2) Preparation of component A: Take 100 parts of base material, 0.000015 parts of platinum catalyst, and 0.5 parts of coupling agent, mix them evenly in a high-speed disperser, and vacuumize for defoaming.

[0017] (3) Preparation of component B: take 100 parts of base material, 8 parts of hydrogen-containing silicone oil, 0.5 parts of coupling agent, 0.05 parts of inhibitor, and 3 parts of tackifier, mix them evenly in a high-speed disperser, vacuumize and defoam .

[0018] (4) Mix the A component and B component prepared in the above steps according to the mas...

Embodiment 2

[0020] (1) Preparation of the base material: Add 100 parts of vinyl silicone oil, 155 parts of aluminum oxide, and 32 parts of aluminum hydroxide into a high-speed disperser and mix evenly, vacuumize and defoam to prepare the base material. Among them, alumina contains alumina raw materials with two particle sizes of 5 μm and 15 μm, which are prepared by mixing according to the ratio of parts by mass of 1:2.

[0021] (2) Preparation of component A: Take 100 parts of base material, 0.000018 parts of platinum catalyst, and 0.5 parts of coupling agent, mix them evenly in a high-speed disperser, and vacuumize for defoaming.

[0022] (3) Preparation of component B: Take 100 parts of base material, 8 parts of hydrogen-containing silicone oil, 0.45 parts of coupling agent, 0.05 parts of inhibitor, and 3 parts of tackifier, and mix them evenly in a high-speed disperser, vacuumize and defoam .

[0023] (4) Mix the A component and B component prepared in the above steps according to th...

Embodiment 3

[0025] (1) Preparation of the base material: Add 100 parts of vinyl silicone oil, 148 parts of aluminum oxide, and 30 parts of aluminum hydroxide into a high-speed disperser and mix evenly, vacuumize and defoam to prepare the base material. Among them, alumina contains alumina raw materials with two particle sizes of 5 μm and 15 μm, which are prepared by mixing according to the ratio of parts by mass of 1:2.

[0026] (2) Preparation of component A: Take 100 parts of base material, 0.000012 parts of platinum catalyst, and 0.5 parts of coupling agent, mix them evenly in a high-speed disperser, and vacuumize for defoaming.

[0027] (3) Preparation of component B: take 100 parts of base material, 8 parts of hydrogen-containing silicone oil, 0.5 parts of coupling agent, 0.05 parts of inhibitor, and 3 parts of tackifier, mix them evenly in a high-speed disperser, vacuumize and defoam .

[0028] (4) Mix the A component and B component prepared in the above steps according to the mas...

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PUM

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Abstract

The invention discloses double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant. The double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant comprises a component A and a component B and is characterized in that the component A is prepared by mixing a basic material, a platinum catalyst and a coupling agent in mass ratio of 100:(0.00001-0.1):(0.1-1); the component B is formed by mixing a basic material, a coupling agent, an inhibitor and a tackifier in mass ratio of 100: (0.2-1.0):(0.01-1):(1-10); the basic material is formed by mixing vinyl-terminated silicone oil, heat-conducting filler and a flame retardant in mass ratio of 100: (120-160):(20-40). The double-component self-adhesive addition type flame retardant heat conducting room temperature curing organic silicon pouring sealant has good optical performance, heat conduction property and relatively good viscosity and can meet the long-term using requirements in high and low temperature environments.

Description

technical field [0001] The invention relates to the technical field of potting materials, in particular to a two-component self-adhesive addition type flame-retardant, heat-conducting, room-temperature-curing silicone potting glue. Background technique [0002] As electronic devices continue to integrate more powerful functions into smaller components, electronic components place higher requirements on the flame retardancy and thermal conductivity of potting compounds. Addition-type liquid silicone rubber has the characteristics of no release of by-products during cross-linking, small shrinkage, easy control of cross-linking density and vulcanization speed, and is an ideal base material for potting adhesives for electronic appliances. However, the addition-type silicone rubber has poor adhesion due to its non-polar molecules. When used as electronic potting and coating materials, moisture will penetrate into the device through the gap between the rubber and the substrate, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J11/04C09J11/06
Inventor 陈春浩
Owner 西卡(江苏)工业材料有限公司
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