Preparation method of anti-aging silicone material for LED packaging

A LED packaging and anti-aging technology, applied in adhesives, adhesive additives, electrical components, etc., can solve the problems of poor aging resistance, low refractive index, poor formability, etc., and achieve high elasticity, good flexibility, and tear resistance The effect of increasing the crack strength

Inactive Publication Date: 2019-07-16
宁波市海曙果壹电子科技有限公司
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Problems solved by technology

[0014] The technical problem to be solved by the present invention: Aiming at problems such as low refractive index, poor formability, and poor aging resistance of existing high-brightness, high-power LED packaging organic silica gel products, a kind of LED packaging is provided. Preparation method of aging-resistant silica gel material

Method used

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  • Preparation method of anti-aging silicone material for LED packaging

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Embodiment Construction

[0032] In parts by weight, weigh 40-50 parts of silicone rubber, 20-30 parts of polyurethane, 5-15 parts of white carbon black, 1-3 parts of hexamethyldisilazane, 1-3 parts of diphenylsilane Glycol, 1-3 parts of bis-pentasulfurizing agent, mix white carbon black and hexamethyldisilazane in a mixer, and knead for 10-20 minutes at a stirring speed of 200-300r / min, that is To obtain a kneaded product, place the kneaded product in an oven at a temperature of 80-90°C and dry for 1-2 hours to obtain a dry kneaded product. Add diphenylsilanediol, silicone rubber and polyurethane to the dried kneaded product. Blend at a speed of 400-500r / min for 1-2 hours to obtain the blended rubber. Add bis-dipentasulfurizing agent to the blended rubber, thin it out and take out the sheet to obtain a sample. Put the sample in a flat vulcanizing machine In the process, vulcanize at a pressure of 15-20MPa and a temperature of 170-180°C for 5-10 minutes, take it out and dry it in an oven at a temperatu...

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Abstract

The invention relates to a preparation method of an anti-aging silicone material for LED packaging, and belongs to the technical field of silicone products. Polyurethane is adopted to modify siliconerubber so as to obtain a raw material, and through combination with vinyl-terminated methylsilicone oil and a platinum catalyst, a rubber matrix is obtained through hydrosilylation; and the hydrogen-containing methylsilicone oil is adopted as a cross-linking agent, and vulcanization is performed so as to obtain the LED packaging anti-aging silicone material. The anti-aging silicone material has agood refractive index, aging resistance and good mechanical properties, and polyurethane has the advantages of high hardness, high strength, high elasticity, high wear resistance, tear resistance, aging resistance, ozone resistance, radiation resistance, good electrical conductivity and the like, and silicone rubber has excellent heat resistance, cold resistance, dielectric properties, ozone resistance, atmosphere aging resistance and other properties, so that after the silicone rubber is modified by using polyurethane, the tensile strength and tear strength of the modified silicone rubber areimproved, and the aging resistance is also improved.

Description

technical field [0001] The invention relates to a method for preparing an aging-resistant silica gel material for LED packaging, and belongs to the technical field of silica gel products. Background technique [0002] Since entering the 21st century, human beings hope to achieve sustainable social development through low-carbon economic models and lifestyles. As a new type of solid light source, light-emitting diode (LED) has the advantages of small size, low power consumption (about one-eighth of incandescent lamp), low calorific value, and long service life (up to 50,000 to 100,000 Hours), good shock resistance, fast response, suitable for mass production and other characteristics, it has played an irreplaceable role in many fields such as living lighting, traffic lighting and industrial lighting, and has made outstanding contributions to my country's energy conservation and environmental protection and social development. contribute. LED has become the trend and trend of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/04C09J11/04C09J11/06C09J11/08H01L33/56
CPCC08L2201/08C08L2203/206C08L2205/025C08L2205/035C08L2205/22C08L2312/00C09J11/04C09J11/06C09J11/08C09J183/04H01L33/56C08L83/04C08L75/04C08K3/36C08K5/14
Inventor 郭剑
Owner 宁波市海曙果壹电子科技有限公司
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