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Organic silica gel with high refractive index and preparation method thereof

A technology of refractive index and silicone, which is applied in the field of silicone gel with high refractive index and its preparation, can solve the problem of affecting the light transmittance of the gel, and the occasions that require high light transmittance cannot fully meet the use requirements, gel transmittance, etc. The effect of high refractive index and light transmittance can be achieved without the influence of light rate

Active Publication Date: 2019-09-24
HANGZHOU ZHIJIANG NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding MT, MQ resin and tackifier to the silicone gel can improve the adhesion between the gel and the substrate to a certain extent, but it will affect the light transmission performance of the gel, especially the silicone resin with different refractive index. , the tackifier contains alkoxy groups, which will release small molecules such as methanol and ethanol, which will also affect the light transmittance of the gel
The refractive index of the silica gel obtained by the above methods is 1.41, which cannot fully meet the use requirements for some occasions that require high light transmittance

Method used

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  • Organic silica gel with high refractive index and preparation method thereof
  • Organic silica gel with high refractive index and preparation method thereof
  • Organic silica gel with high refractive index and preparation method thereof

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preparation example Construction

[0065] The present application also provides a preparation method of the above-mentioned organosilicon gel, comprising the following steps:

[0066] Mix vinyl-terminated phenyl-containing silicone oil, hydrogen-terminated phenyl-containing silicone oil, phenyl hydrogen-containing silicone oil and inhibitor to obtain component A;

[0067] Mixing vinyl-terminated phenyl-containing silicone oil and platinum catalyst to obtain component B;

[0068] Mix component A and component B and then cure to obtain a silicone gel with high refractive index.

[0069] In the above preparation process, the raw materials have been described in detail and will not be repeated here.

[0070] After the above components A and B are mixed, the molar ratio of vinyl groups to silicon-hydrogen bonds in the resulting mixture is greater than 1, and only when the amount of vinyl groups is greater than the amount of hydrogen can a stable gel be formed.

[0071] The above-mentioned curing is a curing method...

Embodiment 1

[0075] Mix vinyl-terminated phenyl-containing silicone oil, hydrogen-terminated phenyl-containing silicone oil, phenyl hydrogen-containing silicone oil and inhibitors uniformly according to the proportion to obtain component A;

[0076] Mix vinyl-terminated phenyl-containing silicone oil and platinum catalyst uniformly according to the proportion to obtain component B;

[0077] The silicone gel can be obtained after mixing component A and component B according to the weight ratio of 1:1 and curing them evenly.

[0078] The content and relevant parameters of the above-mentioned A component and B component are specifically shown in Table 1;

[0079] The component content data sheet of table 1 embodiment 1

[0080]

[0081]

Embodiment 2

[0083] Mix vinyl-terminated phenyl-containing silicone oil, hydrogen-terminated phenyl-containing silicone oil, phenyl hydrogen-containing silicone oil and inhibitor according to the proportion to obtain component A;

[0084] Mix vinyl-terminated phenyl-containing silicone oil and platinum catalyst uniformly according to the proportion to obtain component B;

[0085] The silicone gel can be obtained after mixing component A and component B according to the weight ratio of 1:1 and curing them evenly.

[0086] The content and relevant parameters of the above-mentioned A component and B component are specifically shown in Table 2;

[0087] The component content data table of table 2 embodiment 2

[0088]

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Abstract

The invention provides an organic silica gel with a high refractive index. The organic silica gel is prepared from a component A and a component B; the component A is prepared from 0.1-100 parts of vinyl terminated phenyl-containing silicone oil, 0.1-100 parts of hydrogen terminated phenyl-containing silicone oil, 0.1-30 parts of phenyl hydrogen-containing silicone oil and 0-1 parts of an inhibitor; the component B is prepared from 100 parts of vinyl terminated phenyl-containing silicone oil and 0.0001-0.5 part of a platinum catalyst. The organic silica gel has the refractive index of 1.5 or above and good light transmittance, can be used in the optical field and can also be used for encapsulation protection of various electronic products. Furthermore, the production process of the organic silica gel is simple, and only the component A and the component B need to be evenly mixed according to the proportion.

Description

technical field [0001] The invention relates to the technical field of silicone gel, in particular to a silicone gel with a high refractive index and a preparation method thereof. Background technique [0002] Silicone gel is a very soft silicone rubber product after curing. It has the characteristics of high and low temperature resistance, weather resistance and physiological inertia of silicone rubber. The curing principle of silicone gel is silicon hydrosilicon addition reaction. After curing, small molecules will not be released, and the volume will not shrink. The curing speed is only related to temperature. It can be cured at room temperature or heated. It is easy to use and is used in electronic appliances, IGBT, display and medical fields have been widely used. [0003] Silicone gel should have a very low viscosity when used to facilitate flow filling, and at the same time it should be very soft after curing to reduce the stress on electronic components when deforma...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05
CPCC08L83/04C08L2205/025C08L2205/035
Inventor 郝开强陈丹陶小乐何永富
Owner HANGZHOU ZHIJIANG NEW MATERIAL CO LTD
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