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High-refractive-index, high-toughness and vulcanization-resistant LED packaging silicone rubber

A technology of LED packaging and high refractive index, applied in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc. To avoid problems such as damage, to achieve excellent substrate adhesion, increase hardness, and increase cross-linking density

Active Publication Date: 2015-12-23
YANTAI DARBOND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although the refractive index of domestic high-refractive index LED packaging silica gel can reach between 1.50 and 1.55, due to the common use of silicone resin, vinyl silicone oil, hydrogen-containing silicone oil, etc. in formula design, the relative content of silicone resin is low, and the crosslinking density Low, and the bonding effect is not ideal, so it leads to poor vulcanization resistance, easy to damage the bonding interface, etc., while high silicone resin content, high cross-linking density LED packaging silicone has improved vulcanization resistance, but because of its high internal stress , will lead to the reduction of the toughness of the material, and the phenomenon of dead light, cracking of the packaging material, and failure of the bonding interface will occur during the use of high and low temperature cold and heat shocks.

Method used

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  • High-refractive-index, high-toughness and vulcanization-resistant LED packaging silicone rubber
  • High-refractive-index, high-toughness and vulcanization-resistant LED packaging silicone rubber
  • High-refractive-index, high-toughness and vulcanization-resistant LED packaging silicone rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Raw materials

[0038] Methylphenyl vinyl silicone resin: (ViMe 2 SiO 1 / 2 ) (PhSiO 3 / 2 ) 5 ;

[0039] Vinyl dimethyl diphenyl polysiloxane: (ViMe 2 SiO 1 / 2 ) 10 (ViMePh 2 SiO 1 / 2 ) 10 ;

[0040] The platinum series catalyst is a platinum-methylphenyl polysiloxane complex;

[0041] Methylphenyl hydrogen silicone resin: (HMe 2 SiO 1 / 2 ) 3 (MePhSiO 1 / 2 ) 5 (PhSiO 3 / 2 ) 4 ;

[0042] Hydrogen-terminated diphenyl polysiloxane: (HMe 2 SiO 1 / 2 ) 1 (Ph 2 SiO 1 / 2 ) 4 ;

[0043] The inhibitor is ethynylcyclohexanol.

[0044] 2. Preparation method

[0045]Preparation of component A: Weigh 80 parts of methylphenyl vinyl silicone resin, 18 parts of vinyl dimethyl diphenyl polysiloxane, 0.1 part of platinum catalyst, and 2.9 parts of adhesive, and add them into the mixer in turn for mixing Stir evenly for 3 hours to obtain the A component;

[0046] Preparation of component B: Weigh 40 parts of dimethyl diphenyl hydrogen-containing silicone resin, 59.8 p...

Embodiment 2

[0049] 1. Raw materials

[0050] Methylphenyl vinyl silicone resin: (ViMe 2 SiO 1 / 2 ) (PhSiO 3 / 2 ) 3.5 ;

[0051] Vinyl dimethyl diphenyl polysiloxane: (ViMe 2 SiO 1 / 2 ) 70 (ViMePh 2 SiO 1 / 2 ) 70 ;

[0052] The platinum series catalyst is a platinum-olefin complex;

[0053] Methylphenyl hydrogen silicone resin: (HMe 2 SiO 1 / 2 ) 3 (MePhSiO 1 / 2 ) 4 (PhSiO 3 / 2 ) 4 ;

[0054] Hydrogen-terminated diphenyl polysiloxane: (HMe 2 SiO 1 / 2 ) 1 (Ph 2 SiO 1 / 2 ) 5 ;

[0055] The inhibitor is 1,1,3-triphenyl-2-propyn-1-ol.

[0056] 2. Preparation method

[0057] Preparation of component A: Weigh 90 parts of methylphenyl vinyl silicone resin, 8 parts of vinyl dimethyl diphenyl polysiloxane, 0.3 parts of platinum catalyst, and 1.0 parts of adhesive, and add them to the mixer in turn and mix them Stir evenly for 5 hours to obtain the A component;

[0058] Preparation of component B: Weigh 60 parts of dimethyl diphenyl hydrogen-containing silicone resin, 39.7 parts o...

Embodiment 3

[0061] 1. Raw materials

[0062] Methylphenyl vinyl silicone resin: (ViMe 2 SiO 1 / 2 ) 2 (PhSiO 3 / 2 ) 8 ;

[0063] Vinyl dimethyl diphenyl polysiloxane: (ViMe 2 SiO 1 / 2 ) 40 (ViMePh 2 SiO 1 / 2 ) 40 ;

[0064] The platinum series catalyst is a platinum-methylphenyl polysiloxane complex;

[0065] Methylphenyl hydrogen silicone resin: (HMe 2 SiO 1 / 2 ) 3 (MePhSiO 1 / 2 ) 6 (PhSiO 3 / 2 ) 4 ;

[0066] Hydrogen-terminated diphenyl polysiloxane: (HMe 2 SiO 1 / 2 ) 1 (Ph 2 SiO 1 / 2 ) 6 ;

[0067] The inhibitor is 1,1,3-triphenyl-2-propyn-1-ol.

[0068] 2. Preparation method

[0069] Preparation of component A: Weigh 85 parts of methylphenyl vinyl silicone resin, 9.8 parts of vinyl dimethyl diphenyl polysiloxane, 0.2 parts of platinum catalyst, and 5 parts of adhesive into the mixer in sequence, Mix for 4 hours and stir evenly to obtain the A component;

[0070] Preparation of component B: Weigh 50 parts of dimethyl diphenyl hydrogen-containing silicone resin, 49.9...

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Abstract

The invention relates to LED packaging silicone rubber, particularly relates to the high-refractive-index LED packaging silicone rubber, and belongs to the adhesive technical field. The high-refractive-index LED packaging silicone rubber includes a component A and a component B, and the weight ratio of the component A to the component B is 10 to 1. The component A includes the following raw material components in parts by weight: 80-90 parts of methyl phenyl vinyl silicon resin, 8-18 parts of vinyl dimethyl diphenyl polysiloxane, 0.1-0.3 part of a platinum-based catalyst, and 1-5 parts of an adhesive. The component B includes the following raw material components in parts by weight: 40-60 parts of methyl phenyl hydrogen-containing silicon resin, 40-60 parts of hydrogen-terminated diphenyl polysiloxane, and 0.1-0.3 part of an inhibitor. The high-refractive-index LED packaging silicone rubber has the beneficial effects of high hardness, vulcanization resistance, excellent adhesion, excellent hot and cold shock resistant performance and the like.

Description

technical field [0001] The invention relates to LED packaging silica gel with high refractive index, in particular to LED packaging silica gel with high refractive index, vulcanization resistance and thermal shock resistance, and belongs to the technical field of adhesives. Background technique [0002] As LEDs become more and more widely used, the requirements for LED packaging materials are also getting higher and higher. At present, the packaging materials used in LED mainly include epoxy resin and organic silicon materials. Epoxy resin has excessive internal stress, yellowing, poor high and low temperature resistance, and poor aging resistance, while organic silicon materials have small internal stress and high and low temperature resistance. Good, non-yellowing, comprehensive performance is obviously better than epoxy resin, so it quickly replaces epoxy resin and is widely used in the field of LED packaging. The use of high-refractive silicone silica gel with a refract...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J183/05C09J11/08C09J11/06H01L33/56
Inventor 陈维庄恒冬王建斌陈田安
Owner YANTAI DARBOND TECH
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