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Single-package organic silicon rubber packaging adhesive for high-power type white LED (light-emitting diode) and preparation method of single-package organic silicon rubber packaging adhesive

A silicone rubber, single-packaging technology, used in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problem that it is difficult to meet the development needs of the high-power LED packaging industry, and the viscosity is difficult to achieve uniform mixing and sufficient mixing. Curing, performance degradation of LED encapsulant, etc., to achieve the effect of suitability for industrial production, short preparation route and convenient operation

Inactive Publication Date: 2014-12-24
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of the rubber-type packaging glue prepared in this way are: the ratio is easy to be out of balance, especially when the glue viscosity of the two packages is very high, this problem is particularly prominent
In addition, when the two are mixed and cured, it is difficult to achieve uniform mixing and full curing due to their high viscosity, resulting in a decrease in the performance of the LED packaging adhesive; it is difficult to meet the development needs of the high-power LED packaging industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A single-pack silicone rubber encapsulant for high-power white light LEDs, calculated in parts by weight, its raw material composition and content are as follows:

[0035] High viscosity self-crosslinking phenyl silicone resin 100 parts

[0036] Catalyst 0.001 parts

[0037] Inhibitor 0.002 parts

[0038] 4 parts of reinforcing agent;

[0039] The high-viscosity self-crosslinking phenyl silicone rubber is a phenyl silicone rubber with hydrogen in the molecular main chain and vinyl in the terminal group, with a viscosity of 15000 mpa.s and a hydrogen content of 1.75×10 -4 mol / g, the vinyl content is 1.35×10 -4 mol / g;

[0040] The catalyst is a complex of platinum and tetramethyltetravinylcyclotetrasiloxane provided by Shanghai Huasi Chemical New Materials Co., Ltd.;

[0041] The inhibitor is 3-phenyl-1-butyn-3-ol;

[0042] The reinforcing agent is phenylvinyl MQ silicone rubber from Guangzhou Delta Silicone Technology Development Co., Ltd.

[0043] The above-menti...

Embodiment 2

[0050] A single-pack silicone rubber encapsulant for high-power white light LEDs, calculated in parts by weight, its raw material composition and content are as follows:

[0051] High viscosity self-crosslinking phenyl silicone resin 120 parts

[0052] Catalyst 0.005 parts

[0053] Inhibitor 0.005 parts

[0054] 8 parts of reinforcing agent;

[0055] The high-viscosity self-crosslinking phenyl silicone rubber is a phenyl silicone rubber with hydrogen in the molecular main chain and vinyl in the terminal group, with a viscosity of 30000 mpa.s and a hydrogen content of 3.75×10 -4 mol / g, the vinyl content is 3.55×10 -4 mol / g;

[0056] The catalyst is a complex of platinum and tetramethyltetravinylcyclotetrasiloxane provided by Shanghai Huasi Chemical New Materials Co., Ltd.;

[0057] The inhibitor is 3-phenyl-1-butyn-3-ol;

[0058] The reinforcing agent is phenylvinyl MQ silicone rubber from Guangzhou Delta Silicone Technology Development Co., Ltd.

[0059] The above-menti...

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Abstract

The invention discloses a single-package organic silicon rubber packaging adhesive for a high-power type white LED (light-emitting diode) and a preparation method of the single-package organic silicon rubber packaging adhesive. The preparation method of the single-package organic silicon rubber packaging adhesive for the high-power type white LED comprises the following steps: uniformly stirring 100-120 parts by weight of high-viscosity self-crosslinked phenyl organic silicon rubber, 0.001-0.005 part by weight of a catalyst, 0.002-0.005 part by weight of an inhibitor and 4-8 parts by weight of a reinforcing agent; and, then, deaerating the components in vacuum for 15-30 minutes to obtain the single-package organic silicon rubber packaging adhesive, with a high refractive index and high light transmittance, for the high-power type white LED, wherein the single-package organic silicon rubber packaging adhesive is transparent after being cured, and has shore A hardness of 53-77. The preparation method is simple, environment-friendly and efficient. The single-package organic silicon rubber packaging adhesive is used for high polymer material fields such as high-power LED packaging, is used for filling and sealing of electrical elements, filling and sealing of high-pressure parts and moisture-proof coating of circuit boards, packaging, insulation protection and the like of electronic LED indoor and outdoor display panels, LED traffic signals, and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a single-package organic silicon rubber encapsulant for high-power white light LEDs and a preparation method. Background technique [0002] With the rapid development of LED packaging, electronic packaging and other industries, the development of packaging materials that are resistant to thermal shock, non-yellowing, high light transmittance, and high refractive index is an important key technology that urgently needs to be solved in the manufacture of power-type white light LEDs. At present, ordinary LED packaging materials are mainly bisphenol A transparent epoxy rubber, which is the most widely used because of its low price, but due to the heat resistance, moisture resistance, and softness of epoxy rubber, it is easy to turn yellow, brittle, and has low impact strength. , It is easy to produce stress cracking, shrinkage of cured products, etc., and intern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J11/08C09J11/06
Inventor 张英强赵永新李烨
Owner SHANGHAI INST OF TECH
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