Light diffusion type organic silicon composite material and preparation method thereof

Abstract

The invention relates to a light diffusion type organic silicon composite material and a preparation method thereof, the composite material comprises a component A and a component B, the component A and the component B comprise the following raw materials: the component A comprises a base rubber and a reinforcing filler; the component B comprises a cross-linking agent, a catalyst and a light diffusion agent, and the light diffusion agent is a liquid group containing high molar refraction, such as an ether bond, an aromatic ring and an alkoxy group which can be hydrolyzed to generate an ester bond with high molar refraction. According to the organic silicon material, the liquid light diffusion agent is added into the organic silicon material, and the liquid light diffusion agent cannot shield light rays, so that transmission light loss is reduced, and the organic silicon material can keep relatively high light transmittance; meanwhile, the refractive index of the light diffusant is greater than 1.45, and the refractive index of the used base adhesive is generally 1.39-1.40, so that after the pouring sealant is cured, the light diffusant and the polydimethylsiloxane are separated from each other microcosmically, and the pouring sealant is endowed with relatively high haze.

Description

technical field [0001] The invention belongs to the technical field of organic silicon materials, and in particular relates to a light-diffusing organic silicon composite material and a preparation method thereof. Background technique [0002] LED lights are widely loved by people for their advantages of environmental protection, high efficiency and energy saving. They are mainly used in screen display systems, indicator light mobile phones and other fields. In recent years, the application in the field of power lighting has also been actively developed. However, the LED lamp itself is a point light source with limited lighting area and strong light intensity. It also contains a large amount of blue light, which is easy to damage the eyes. People often use packaging materials with light diffusion properties to solve the problem of point light source to surface light source. The light is soft and Problem with high brightness. Lens materials are most widely used in LED lamps,...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art that the haze and light transmittance of silicone potting materials for LED lamps cannot meet the requirements at the same time, and provide a light diffusion type Silicone composite material, the composite material uses a liquid substance as a light diffusing agent, the haze increases after curing, and the light transmittance has no obvious adverse effects, which not only overcomes the adverse effects brought by the solid light diffusing agent, but also endows the silicone Good mechanical properties of composite materials

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