A kind of preparation method of phenylvinyl methyl MQ silicone resin for high folding LED encapsulation

A technology of phenylvinylmethyl and LED encapsulation, which is applied in the field of organosilicon polymer compounds, and can solve the problems of decreased light transmittance, yellowing of resin, and large internal stress of curing, etc.
CN107674207BActive Publication Date: 2021-09-03山东盛宇新材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
山东盛宇新材料有限公司
Publication Date
2021-09-03

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Abstract

The invention relates to a preparation method of phenylvinylmethyl MQ silicone resin for high-fold LED packaging. In the method, ethyl silicate is hydrolyzed under the action of sulfuric acid or a solid acid catalyst to obtain silicic acid, further condensed, and then It can be terminated by reacting with phenyl double head and vinyl double head. After the reaction, reflux to make it highly cross-linked, then neutralize with lye and distill with toluene to finally obtain a toluene solution of phenyl vinyl methyl silicone resin. The reaction activity of this synthesis process is relatively low, easy to control, and the reaction speed is fast and the reaction is sufficient. Silicone resin with stable quality.
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Description

technical field

[0001] The invention relates to the technical field of organosilicon polymer compounds, in particular to a preparation method of phenylvinylmethyl MQ silicone resin for high-fold LED packaging. Background technique

[0002] At present, most of the packaging materials used in high-fold LEDs are epoxy resins. Epoxy resins have excellent adhesion, electrical insulation, sealing and dielectric properties, and are low in cost, flexible in formula, easy to form, High production efficiency has become the mainstream material for low-power LED packaging. However, because epoxy resin contains a large number of aromatic rings, it will be oxidized into carbonyl and become a chromophore after absorbing ultraviolet rays, making the resin yellow. In addition, the epoxy resin will also change color when heated, which reduces the light transmittance in the near ultraviolet region and affects the luminous efficiency of the LED light source. Moreover, the moisture absorption ...

Claims

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