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Organic silicon electronic-pouring sealant with high refractive index and high transparency, as well as preparation and application thereof

A technology with high refractive index and high transparency, applied in photovoltaic power generation, circuits, electrical components, etc., can solve problems such as poor mechanical properties and low light transmittance, and achieve the effects of fast speed, high refractive index, and mild reaction conditions

Inactive Publication Date: 2012-07-18
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] On the premise of ensuring a higher refractive index than that after curing, in order to overcome the shortcomings of low light transmittance and poor mechanical properties of the existing "mercapto-alkenyl" click chemical curing packaging materials, the primary purpose of the present invention is to provide a high Preparation method of silicone electronic potting adhesive with high refractive index and high transparency

Method used

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  • Organic silicon electronic-pouring sealant with high refractive index and high transparency, as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation method of the silicone electronic potting compound with high refractive index and high transparency comprises the following steps:

[0045] (1) Mix 25 parts of methylvinyldimethoxysilane and 30 parts of ethylphenylsilanediol into 200 parts of o-xylene, add 3 parts of calcium hydroxide catalyst, heat up to 60°C for condensation After reacting for 10 hours, the solvent was distilled off to obtain an alkene-based silane oligomer precursor;

[0046] (2) Dissolve 60 parts of 3,4-methylbenzenedithiol and 30 parts of tetramethyltetravinylcyclotetrasiloxane in 200 parts of tetrahydrofuran respectively, that is, dissolve 60 parts of 3,4-methylbenzenedithiol in In 200 parts of tetrahydrofuran, 3,4-methylbenzenedithiol solution is obtained, and 30 parts of tetramethyltetravinyl cyclotetrasiloxane are dissolved in 200 parts of tetrahydrofuran to obtain tetramethyltetravinyl cyclotetrasiloxane solution; then First heat the 3,4-methylbenzenedithiol solution to 70°C, ...

Embodiment 2

[0051] The preparation method of the silicone electronic potting compound with high refractive index and high transparency comprises the following steps:

[0052] (1) Mix 30 parts of vinyltriethoxysilane and 25 parts of diethylsilanediol in 200 parts of p-xylene in proportion by weight, add 2 parts of triethylamine catalyst, heat up to 100 °C, Carrying out the condensation reaction for 3 hours, and distilling off the solvent to obtain an alkene-based silane oligomer precursor;

[0053] (2) Dissolve 60 parts of 4,4'-thiobisphenylthiol and 35 parts of tris(isoallyloxy)vinylsilane in 250 parts of N,N-dimethylformamide in proportion by weight In, 60 parts of 4,4'-thiobisbenzenethiol are dissolved in 250 parts of N,N-dimethylformamide to obtain 4,4'-thiobisbenzenethiol solution, and 35 parts of three ( Isoallyloxy) vinylsilane is dissolved in 250 parts of N,N-dimethylformamide to obtain tri(isoallyloxy)vinylsilane solution; then 4,4'-thiobisphenylthio Heat the alcohol solution to...

Embodiment 3

[0057] The preparation method of the silicone electronic potting compound with high refractive index and high transparency comprises the following steps:

[0058] (1) Mix 50 parts of vinyl tris (2-methoxyethoxy) silane and 35 parts of diisopropylsilanediol in 250 parts of dichloromethane, add 4 parts of potassium hydroxide catalyst, heat up to 50°C, carry out condensation reaction for 12 hours, distill off the solvent to obtain the precursor of olefin-based silane oligomer;

[0059] (2) Dissolve 40 parts of 1,3-propanedithiol and 40 parts of tetraallylsilane in 300 parts of ethanol respectively, that is, dissolve 40 parts of 1,3-propanedithiol in 300 parts of ethanol to obtain 1 , 3-propanedithiol solution, dissolve 40 parts of tetraallylsilane in 300 parts of ethanol to obtain a tetraallylsilane solution; then first heat the 1,3-propanedithiol solution to 60°C, and then Add the tetraallylsilane solution dropwise into the 1,3-propanedithiol solution, react at a constant tempe...

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Abstract

The invention belongs to the field of electronic polymer materials and discloses an organic silicon electronic-pouring sealant with high refractive index and high transparency, as well as a preparation method and an application thereof. The method comprises the following steps of: adding olefin-based silane and a silanol type compound into an organic solvent, adding a catalyst, and reacting at the temperature of 50-100 DEG C for 3-12h to get an olefin-based silane oligomer precursor; dripping an olefin-based silane coupling agent solution into a mercapto-compound solution, and reacting at the temperature of 50-100 DEG C for 8-48h to get a mercaptosilane oligomer precursor; mixing the two precursors to get the organic silicon electronic-pouring sealant, and the curing method comprises the following steps of heating to the temperature of 80-140 DEG C and curing for 3-8h, wherein the refractive index after curing is 1.53-1.59, and the light transmittance is 94-99%. According to the preparation method disclosed by the invention, phenyl and a sulfur element are introduced into the organic silicon electronic-pouring sealant, a thermocuring cross-linking technology is adopted, and mercapto-alkenyl click chemistry thermocuring can occur rapidly, so that the refractive index, the light transmittance and the mechanical properties after curing can be improved.

Description

technical field [0001] The invention belongs to the field of electronic polymer materials, and relates to a filling material for electronic packaging, in particular to a high-refractive-index and high-transparency organic silicon electronic potting glue and its preparation method and application. Background technique [0002] Energy is the most basic driving force for the development and economic growth of the entire world, and the basis for human survival. In the context of the current global energy shortage worries rising again, energy conservation has been paid more and more attention by people, and it will be an important issue facing society in the future. [0003] The LED industry started in the 1970s. Since the 1990s, it has risen rapidly and developed rapidly around the world. Some economically developed countries in the world have launched fierce technical competitions around the development of LEDs. After nearly 40 years of development, China's LED industry has in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/28H01L23/29H01L33/56H01L31/048
CPCY02E10/50
Inventor 胡继文李伟刘峰邹海良刘国军涂园园李银辉候成敏
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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