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Addition-type molded silicone rubber for LED bracket material and preparation method and application of addition-type molded silicone rubber

An LED bracket and addition molding technology, applied in the field of silicone rubber, can solve the problems of unsatisfactory product performance, high tensile strength, poor light transmittance, etc., and achieve excellent optical performance and elasticity, good air tightness, and yellow resistance. Strong denaturation effect

Inactive Publication Date: 2019-04-16
SHENZHEN CITY SQUARE SILICONE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a kind of addition-type silicone rubber and its preparation method, to solve the excessively high tensile strength, good air tightness and low light transmittance existing in the existing addition-type silicone rubber good technical questions
[0006] Another object of the present invention is to provide an application method of the addition-type silicone rubber of the present invention, to solve the technical problems of limited application and unsatisfactory performance of corresponding products due to the existing addition-type silicone rubber in the application process

Method used

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  • Addition-type molded silicone rubber for LED bracket material and preparation method and application of addition-type molded silicone rubber
  • Addition-type molded silicone rubber for LED bracket material and preparation method and application of addition-type molded silicone rubber
  • Addition-type molded silicone rubber for LED bracket material and preparation method and application of addition-type molded silicone rubber

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preparation example Construction

[0051] On the other hand, the embodiment of the present invention also provides the preparation method of the above-mentioned addition-type silicone rubber. The preparation method technological process of described addition type silicone rubber is as figure 1 As shown, it includes the following steps:

[0052] S01. Preparation of compound A: Mix phenyl vinyl silicone resin, thermal conductivity additive and vulcanization catalyst to obtain compound A;

[0053] S02. Preparation of B mixture: Mix phenyl hydrogen-containing silicone resin, light reflection additive, magnesium oxide and inhibitor to obtain B mixture;

[0054] S03. Mixing treatment of glue A and glue B: mixing the A compound and the B compound.

[0055] Wherein, the mixing process in the steps S01 to S03 is to make each component fully mixed uniformly, therefore, as long as it is a mixing method that can make each component fully mixed uniformly, it is within the scope of the disclosure of the present invention. ...

Embodiment 1

[0063] This embodiment provides an addition-type silicone rubber and a preparation method thereof. The addition type silicone rubber comprises the following components by mass:

[0064] Phenyl silicone resin: the refractive index is 1.50, the vinyl content is 6.3%, the viscosity is 25000mpa·s, 60 parts;

[0065] Phenyl hydrogen-containing silicone resin: the refractive index is 1.50, the hydrogen content is 0.24%, the viscosity is 7000mpa·s, 65 parts;

[0066] Platinum catalyst: 10PPM;

[0067] Alumina: spherical, 40 parts;

[0068] Titanium dioxide: 30 parts

[0069] Magnesium oxide: 5 parts

[0070] Inhibitor: 10PPM.

[0071] The preparation method of the addition type silicone rubber comprises the steps:

[0072] S11: 60 parts of phenyl silicone resin with a refractive index of 1.50, a vinyl mass fraction of 6.3%, and a viscosity of 25000mpa·s, 40 parts of spherical alumina and 10PPM platinum catalyst were mixed and ground evenly, and used as component A for later use...

Embodiment 2

[0076] This embodiment provides an addition-type silicone rubber and a preparation method thereof. The addition type silicone rubber comprises the following components by mass:

[0077] Phenyl silicone resin: the refractive index is 1.45, the mass fraction of vinyl is 6.3%, the viscosity is 25000mpa·s, 60 parts;

[0078] Phenyl hydrogen-containing silicone resin: the refractive index is 1.45, the mass fraction of hydrogen is 0.24%, the viscosity is 7000mpa·s, 65 parts;

[0079] Platinum catalyst: 10PPM;

[0080] Alumina: spherical, 40 parts;

[0081] Titanium dioxide: 30 parts

[0082] Magnesium oxide: 5 parts

[0083] Inhibitor: 10PPM.

[0084] The preparation method of the addition type silicone rubber comprises the steps:

[0085] S21: 60 parts of phenyl silicone resin with a refractive index of 1.45, a vinyl mass fraction of 6.3%, and a viscosity of 25000mpa·s, 40 parts of spherical alumina and 10PPM platinum catalyst were mixed and ground evenly, and used as compone...

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Abstract

The invention discloses addition-type molded silicone rubber for an LED bracket material and a preparation method and application of the addition-type molded silicone rubber. The addition-type moldedsilicone rubber is prepared from, by mass, 10-90 parts of phenylvinyl silicone resin, 10-80 parts of phenyl hydrogen-containing silicone resin, 5-30 PPM of a sulfurization catalyst, 10-80 parts of a thermal conductive additive, 1-60 parts of a light reflection additive, 0-10 parts of magnesium oxide and 5-30 PPM of an inhibitor. The components of the addition-type molded silicone rubber are uniformly dispersed, the addition-type molded silicone rubber has excellent optical properties and elasticity after solidification molding, the structure is stable, the airtightness is good, the rubber doesnot absorb water, the yellowing resistance is high, the preparation method of the rubber can effectively ensure the stability of the related performance of the prepared addition-type molded siliconerubber and the stability of the working performance of devices packaged by the addition-type molded silicone rubber, and the service life of the corresponding device is prolonged.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, and in particular relates to an addition-type silicone rubber which can be used as an LED bracket material and a preparation method and application thereof. Background technique [0002] The LED device mainly adopts a thermoplastic (Thermoplastic plastics, TPP) bracket, which is a mature LED packaging bracket. At present, thermoplastic resins such as PPA and PA6T are mainly used as plastic packaging materials for TPP brackets. The airtightness of this type of bracket has not been improved, and the water absorption is strong and PPA itself will change color. These problems will affect the reliability of LED devices. In recent years, some foreign LED companies have introduced a new packaging form from the field of microelectronic packaging, that is, epoxy molding compound (Epoxy molding compound) packaging, referred to as EMC packaging. EMC is a kind of thermosetting plastic (Thermosetting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/05C08L83/07C08K13/04C08K7/18
CPCC08K2003/222C08K2003/2241C08L83/04C08L2201/08C08L2205/025C08K13/04C08K7/18C08K3/22
Inventor 李彦民余珍琴
Owner SHENZHEN CITY SQUARE SILICONE MATERIALS
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