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Addition type silicone rubber for chip transmission film and preparation method of addition type silicone rubber

A technology of addition-type and silicone rubber, which is applied in the field of addition-type silicone rubber for chip transmission films and its preparation, can solve the problems of chip transmission films that cannot meet the requirements, high requirements for process equipment, and difficult industrialization promotion, etc., to achieve good insulation , a wide range of applications, the material is soft and shock-resistant

Pending Publication Date: 2022-07-05
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thick and thin-film components have the advantages of high sensitivity, repeatability, good stability, low power consumption, and long life. However, the production of thin-film components requires high process equipment and high production costs, making it difficult to promote industrialization.
[0003] Traditional chip transport films will produce by-products during the vu

Method used

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  • Addition type silicone rubber for chip transmission film and preparation method of addition type silicone rubber
  • Addition type silicone rubber for chip transmission film and preparation method of addition type silicone rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of preparation method of the addition type silicone rubber that is used for chip transmission film, mainly comprises the following steps:

[0040] S1: Preparation of vinyl silicone oil

[0041] Mix 100Kg octamethylcyclotetrasiloxane and 1.0Kg tetramethyldivinyldisiloxane, add 0.2Kg catalyst tetramethylammonium hydroxide under stirring, heat up to 120°C for polymerization for 4h, then heat up again At 200°C, the low molecular weight was removed for 6h under a vacuum of -0.08-0.09MPa, and after cooling, vinyl silicone oil was obtained.

[0042] S2: Preparation of MQ resin

[0043] (1) At 20~60℃, hydrolyze 100kg of sodium silicate under acidic conditions, then add 14kg of tetramethyldivinyldisiloxane and 15kg of hexamethyldisiloxane for co-hydrolysis for 2h, and reflux for 6h to synthesize MQ extraction solution;

[0044] (2) After adding equal volume of toluene to the MQ extraction solution, dehydration and polycondensation at 150°C under reflux for 6h;

[0045...

Embodiment 2

[0056] S1: Preparation of vinyl silicone oil

[0057] Mix 100Kg octamethylcyclotetrasiloxane and 0.88Kg tetramethyldivinyldisiloxane, add 0.2Kg catalyst tetramethylammonium hydroxide under stirring, heat up to 120°C for polymerization for 4h, and then heat up again At 200°C, the low-molecular weight is removed under -0.08-0.09MPa vacuum for 6 hours, and vinyl silicone oil is obtained after cooling. The viscosity at 25°C is 20000 mPa.s, and the mass percentage of vinyl is 0.29%.

[0058] S2: Preparation of MQ resin

[0059](1) At 20~60℃, hydrolyze 100kg of sodium silicate under acidic conditions, then add 9kg of tetramethyldivinyldisiloxane and 9kg of hexamethyldisiloxane for co-hydrolysis for 2h, and reflux for 6h to synthesize MQ extraction solution;

[0060] (2) After adding equal volume of toluene to the MQ extraction solution, dehydration and polycondensation at 150°C under reflux for 6h;

[0061] (3) the MQ resin solution obtained is washed to neutrality, dried and fil...

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Abstract

The invention discloses addition type silicone rubber for a chip transmission film and a preparation method of the addition type silicone rubber, the addition type silicone rubber is prepared from a component A and a component B according to the mass ratio of 1: 1, and the component A is prepared from the following components in parts by weight: 100 parts of base rubber, 5-20 parts of MQ silicon resin and 0.05-0.25 part of a platinum catalyst. And the component B is prepared from the following components in parts by weight: 100 parts of base rubber, 5-20 parts of MQ silicon resin, 1-5 parts of hydrogen-containing silicone oil and 0.01-0.15 part of an inhibitor. The addition type silicone rubber for manufacturing the electronic chip transmission film has the light transmittance of 95% or above, meanwhile has good insulativity, high strength, yellowing resistance, certain viscosity with a chip, good release property, no toxicity, no odor, no by-product, safety, environment friendliness and innovation and industrial value.

Description

technical field [0001] The present invention relates to a preparation method of an addition type silicone rubber, and more particularly to an addition type silicone rubber used for a chip transfer film and a preparation method thereof. Background technique [0002] Semiconductor gas sensors are divided into sintered type, thick film type and thin film type. Their respective structures, manufacturing processes are different, and their performance characteristics are also different. At present, sintered components are gradually being replaced by thick and thin film components. Thick and thin film elements have the advantages of high sensitivity, repeatability, good stability, low power consumption, and long life, but the production of thin film elements requires high process equipment, high production costs, and is not easy to promote industrialization. [0003] The traditional chip transfer film will produce by-products during the vulcanization process, with low light trans...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/04C08L83/05
CPCC08L83/04C08L2201/08
Inventor 蔡杨施贤斌王锦
Owner JIANGSU TIANCHEN NEW MATERIALS