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Organopolysiloxane composition, and curing method and application thereof

A polysiloxane and composition technology, applied in electrical components, semiconductor devices, circuits, etc., can solve the problems of low tensile strength, short operation time, affecting the service life of light-emitting diodes, etc., and achieve high tensile strength, The effect of high bonding strength and easy control of operating time

Active Publication Date: 2012-11-21
ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing LED liquid potting silicone rubber generally has problems such as short operating time after potting, low tensile strength, easy cracking, and affecting the service life of light-emitting diodes.

Method used

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  • Organopolysiloxane composition, and curing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Add 50g of silicone resin to 100g of terminal vinyl silicone oil with a viscosity of 4000mPa·s (25°C) {its molecular structure is [(CH 3 ) 3 SiO 1 / 2 ] m [(CH 3 ) 2 (CH 2 =CH)SiO 1 / 2 ] n [SiO 4 / 2 ] z (Wherein (m+n) / z=1.0, z=25), the vinyl content is 0.4%}, mix uniformly and make base rubber compound.

[0046] Then add 0.005 g of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum complex and 1 g of vinyl tri-tertbutyl peroxide silane into 100 g of base rubber, and stir evenly Component (A) was prepared and used for later use.

[0047] Add 30g hydrogen-containing silicone oil (H%=1.0%) and 0.035g 1-ethynyl-1-cyclohexanol to 50g parts by mass of the base rubber, and mix uniformly at room temperature to prepare component (B), which is set aside.

[0048] Then component (A) and component (B) are mixed with each other according to the weight ratio of 1:1, heated and cured at 150° C. for 30 minutes to obtain the LED potting silicone rubber.

[0049] Table 1 shows th...

Embodiment 2

[0051] Add 60g of silicone resin to 100g of terminal vinyl silicone oil with a viscosity of 5000mPa·s (25°C) {its molecular structure is [(CH 3 ) 3 SiO 1 / 2 ] m [(CH 3 ) 2 (CH 2 =CH)SiO 1 / 2 ] n [SiO 4 / 2 ] z (wherein (m+n) / z=0.7, z=30) the vinyl content is 0.36%}, mix evenly to make the base rubber.

[0052] Then add 0.005g of 1,3-divinyl-1,1,3,3-tetramethyldisiloxane platinum complex and 1g of vinyl tri-tertbutylperoxysilane to 100g of base rubber, and stir well Component (A) was prepared and used for later use.

[0053] Add 20g of hydrogen-containing silicone oil (H%=1.2%) and 0.04g of 1-ethynyl-1-cyclohexanol to 75g of base rubber, and mix uniformly at room temperature to prepare component (B), which is set aside.

[0054] Then component (A) and component (B) are mixed with each other according to the weight ratio of 1:1, heated and cured at 150° C. for 30 minutes to obtain the LED potting silicone rubber.

[0055] Table 1 shows the physical and mechanical propert...

Embodiment 3

[0057] Add 50g of silicone resin to 100g of vinyl silicone oil with a viscosity of 4000mPa·s (25°C) {its molecular structure is [(CH 3 ) 3 SiO 1 / 2 ] m [(CH 3 ) 2 (CH 2 =CH)SiO 1 / 2 ] n [SiO 4 / 2 ] z , where (m+n) / z=1.2, z=35) the vinyl content is 0.39%}, mix evenly to make the base compound.

[0058] Then add 0.005g bis(alkynyl) (1,5-cyclooctadiene) platinum complex in 100g base rubber compound, 1g vinyl trit-butyl peroxide silane, stir to obtain component (A), spare.

[0059] Add 20 g of polymethylhydrogen siloxane (H%=1.6%) and 0.04 g of 2-methyl-3-butyn-2-ol into 80 g of base rubber, and mix uniformly at room temperature to obtain a compound Point (B), spare.

[0060] Then component (A) and component (B) are mixed with each other according to the weight ratio of 1:1, heated and cured at 150° C. for 30 minutes to obtain the LED potting silicone rubber.

[0061] Table 1 shows the physical and mechanical properties of the above-mentioned LED potting silicone rubber ...

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Abstract

The invention provides an organopolysiloxane composition. The organopolysiloxane composition comprises the following components: (i) organopolysiloxane containing two or more fatty group unsaturated groups in its molecule; (ii) organopolysiloxane containing silicon key hydrogen-connecting atoms in its molecules; (iii) silicon resin; (iv) a catalyst; (v) an alkynyl-containing inhibitor; and (vi) atackifier. The organopolysiloxane composition has the advantages that: reinforced silicon resin with a special structure coordinates with the organopolysiloxane with different molecular structures, so that cured silicon has high tensile strength, the operating time is easy to control, and the bonding strength of the glue material and the basic material is high.

Description

technical field [0001] The present invention relates to a curable organopolysiloxane composition, its curing method and its application. Background technique [0002] In order to cope with the increasing energy crisis and environmental pollution in the world, "energy saving" and "green" have become one of the research goals of the material science field group. White LED lighting technology has the advantages of "energy saving", "environmental protection", "high efficiency" and Features such as "long life" are called a new generation of green and environmentally friendly lighting sources after incandescent lamps and fluorescent lamps. [0003] LED liquid potting silicone rubber has the characteristics of high light transmittance, large refractive index, good thermal stability, small stress, low hygroscopicity, etc., which is obviously better than epoxy glue, so it is widely used in LED packaging. [0004] LED liquid potting silicone rubber is a new type of material that is n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K5/5425H01L33/56
Inventor 常映军李庭辉
Owner ZHONGHAO CHENGUANG RES INST OF CHEMICALINDUSTRY CO LTD
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