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Silicon rubber composition for electrode circuit protection, electrode circuit protection material and electric, electronic parts

A silicone rubber composition and circuit protection technology, applied in the direction of electrical components, circuits, electric solid devices, etc., can solve the problems of preventing insufficient vulcanization, corrosion of metal electrode circuits, etc., and achieve the effect of excellent sulfide corrosion resistance

Active Publication Date: 2009-07-15
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this case, as a protective material, it has been proposed to add alkaline inorganic fillers such as calcium carbonate or metal powders such as copper powder (Patent Documents 1 and 2: JP-A-2003-096301, JP-A-2003-324171 No.), but the use of this conventional protective material has the problem of insufficient prevention of metal electrode circuit corrosion and prevention of sulfidation

Method used

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  • Silicon rubber composition for electrode circuit protection, electrode circuit protection material and electric, electronic parts
  • Silicon rubber composition for electrode circuit protection, electrode circuit protection material and electric, electronic parts
  • Silicon rubber composition for electrode circuit protection, electrode circuit protection material and electric, electronic parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] In the following formula (i)

[0105]

[0106] (Where, L=450) Add the following formula (ii)

[0107]

[0108] (wherein, L=10, M=8) the organohydrogenpolysiloxane and the octanol modification solution of 0.05 parts of chloroplatinic acid, the amount of the organohydrogenpolysiloxane makes the SiH group and the above-mentioned containing vinyl group The molar ratio of the vinyl group in the dimethylpolysiloxane (i) is 1.5, and 10 parts of IXE500 (manufactured by Toagosei Co., Ltd., antimony-free bismuth) is added to 100 parts of the silicone rubber composition prepared by stirring well It is an inorganic anion exchanger) to prepare a liquid silicone rubber composition. This composition was cured under the conditions of 80° C.×4 hours.

[0109]The physical properties of the prepared cured product were measured in accordance with JIS K6301. In addition, the hardness uses a spring-type A-type testing machine. The results are shown in Table 1.

[0110] In addition...

Embodiment 2

[0112] An octanol modification in which the above-mentioned organohydrogenpolysiloxane (ii) and 0.05 part of chloroplatinic acid are added to 100 parts of the above-mentioned dimethylpolysiloxane (i) terminated by vinyldimethylsiloxy groups at both ends. The amount of organic hydrogenated polysiloxane is such that the molar ratio of SiH group to the vinyl group in the above-mentioned vinyl-containing dimethyl polysiloxane (i) is 1.5, and the silicone rubber composition prepared by fully stirring 100 Add 20 parts of IXE530 to each part to prepare a liquid silicone rubber composition. This composition was cured under the conditions of 80° C.×4 hours.

[0113] Similar to Example 1, the physical properties and corrosion test of the prepared cured product were measured.

Embodiment 3

[0115] In the following formula (iii)

[0116]

[0117] (Wherein, L=450) Add 0.1 part of titanium chelate catalyst (trade name TC-750) in 100 parts of the dimethylpolysiloxanes of two end trimethoxysilyloxy cappings shown in, fully stir 5 parts of IXE500 were added to 100 parts of the prepared silicone rubber composition to prepare a liquid silicone rubber composition.

[0118] Except having cured at 23° C. / 50% RH for 24 hours, the physical properties and corrosion test of the cured product were measured in the same manner as in Example 1.

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Abstract

The silicone rubber composition for electrode circuit protection is characterized in that: (A) 100 parts by mass of curable silicone rubber composition, (B) 0.1-50 parts by mass of inorganic ion exchanger as essential components. Due to low elasticity, the silicone rubber composition of the present invention can be cured by heating at low temperature, standing at room temperature or irradiated with ultraviolet rays and has excellent corrosion resistance against vulcanization. , Useful as a protective coating agent for electronic parts.

Description

technical field [0001] The invention relates to a silicon rubber composition for electrode circuit protection, an electrode circuit protection material and electric and electronic parts for protecting the metal of the electrode circuit in electric and electronic parts from sulfide corrosion. Background technique [0002] In recent years, in electrical and electronic parts, metal electrode circuits are vulcanized by sulfur compounds in the atmosphere, vulcanizing agents for rubber products, exhaust gases, etc., which have become a major problem. [0003] In this case, as a protective material, it has been proposed to add alkaline inorganic fillers such as calcium carbonate or metal powders such as copper powder (Patent Documents 1 and 2: JP-A-2003-096301, JP-A-2003-324171 No.), but the use of this conventional protective material, there is a problem of insufficient prevention of metal electrode circuit corrosion, prevention of sulfide. [0004] Patent Document 1: JP-A-2003-0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/14C08L83/07C08K3/10C08K3/18C08L83/04C08L83/05H01L23/29H01L23/31H05K3/28
CPCB01J23/40C08G77/08C08K3/22C08L83/04C08L2203/206C09D183/04C23F11/10
Inventor 柏木努盐原利夫
Owner SHIN ETSU CHEM IND CO LTD