Dealcoholizing type organic silicon embedding glue

An organosilicon encapsulant and dealcoholization technology, applied in adhesives, other chemical processes, chemical instruments and methods, etc., can solve the problem of difficult breakthroughs in the catalytic system, and achieve novel catalytic system, good storage stability, excellent resistance. warm effect

Inactive Publication Date: 2008-02-13
SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been difficult to break through in the catalytic system

Method used

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  • Dealcoholizing type organic silicon embedding glue
  • Dealcoholizing type organic silicon embedding glue
  • Dealcoholizing type organic silicon embedding glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A new type of dealcoholized silicone potting compound, which uses hydroxyl-terminated polydimethylsiloxane as the main raw material, and is formed by the reaction of two components A and B, wherein the component A is composed of 107 silicone rubber, The composition of base glue, plasticizer, filler and deep layer curing accelerator is by weight:

[0041] 107 silicone rubber 50

[0042] Base 50

[0043] Silicone oil 10

[0044] Fumed silica 5

[0045] calcium carbonate 10

[0046] Microsilica 5

[0047] Curing accelerator 0.2;

[0048] Described B component comprises catalytic system and plasticizer, and this catalytic system is made up of hydroxylamine catalyst, crosslinking agent and coupling agent, and each component is by weight:

[0049] Hydroxylamine catalyst 0.8

[0050] Dichloromethyltriethoxysilane 1

[0051] Coupling agent 0.1

[0052] Silicone oil 3;

[0053] Among them, the base rubber is pretreated 107 silicone rubber, and its preparation process i...

Embodiment 2

[0056] The preparation of A component is identical with embodiment 1.

[0057] Each component of component B is by weight:

[0058] Hydroxylamine catalyst 0.8

[0059] Dichloromethyltriethoxysilane 6

[0060] Coupling agent 0.5

[0061] Silicone oil 4.

Embodiment 3

[0063] The preparation of A component is identical with embodiment 1.

[0064] Each component of component B is by weight:

[0065]Hydroxylamine catalyst 0.8

[0066] Dichloromethyltriethoxysilane 10

[0067] Coupling agent 0.3

[0068] Silicone oil 5.

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Abstract

The invention discloses a novel de-alcoholized organosilicon potting adhesive, taking hydroxy-terminated dimethyl silicone polymer as the principal raw material, comprising composition A and composition B. Composition A includes (calculated by weight percent) 107 silicone rubber + base 100, plasticizer (5 to 15), filler (0 to 20), and solidifying accelerator (0.1 to 1). Composition B includes (calculated by weight percent) hydroxylamine catalyst (0.8), crosslinking agent (1 to 10), coupling agent (0.1 to 0.5) and plasticizer (3 to 5). The base adopts preprocessed 107 silicon rubber (107 silicon rubber: base = 30:70 to 50:50). The potting adhesive has excellent heat-resistance and electric performance; the volume resistance is as high as 1.0*1015 Omega question mark cm, and the dielectric coefficient reaches 25kv/question mark mm-1.

Description

technical field [0001] The invention relates to a condensation dealcoholization type potting compound with a new curing system, in particular to a new dealcoholization type silicone potting compound whose curing system is combined with three catalyst systems of hydroxylamine catalyst, crosslinking agent and coupling agent . Background technique [0002] Room temperature vulcanized silicone rubber (RTV) is a new type of silicone elastomer that came out in the 1960s. The most notable feature of this rubber is that it can be cured at room temperature without heating or pressure, and it is extremely convenient to use. Therefore, as soon as it came out, it quickly became an important part of the entire silicone product. Now room temperature vulcanized silicone rubber has been widely used as adhesives, sealants, protective coatings, potting and molding materials, and has its uses in various industries. [0003] Condensation-type liquid silicone rubber is based on hydroxyl-termin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09K3/10
Inventor 陈文戴宏程
Owner SHANGHAI HUITIAN NEW CHEMICAL MATERIALS CO LTD
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