The road of dream building

Release time:

2023-06-27 15:03

Light diffusion material refers to a material that can convert point and line light sources into line and surface light sources. Usually, the function of this material is to make the light source thick through refraction, reflection and scattering, making the naked eye look less dazzling. Today, Xiao Bian will lead you to learn about it.Light diffusing materials commonly used in LEDs.

At present, the preparation methods of light diffusion materials mainly include polymerization method and blending modification method.

1. Polymerization method

The polymerization method is based on the principle of light refraction, and two polymer monomers with certain refractive index difference and poor compatibility are selected to be polymerized together or segmented polymerization is used to further prepare light diffusion materials. The two monomers with different reactivity are prepared by polymerization. Because the reactivity of the scatterer monomer and the monomer forming the matrix is different, the scatterer monomer is produced by self-polymerization or block copolymerization with the matrix monomer, so that the two monomers have uniform optical properties for the condensed core formed in the respective polymerization chains, and light is reflected and refracted at the boundary of the condensed core, thus forming scattering. The polymerization method is widely used inPMMA-based light diffusing materials are prepared.

2. Blending modification method

The blending modification method is to add the light diffusing agent to the resin. The light diffusing agent has a spherical shape and is uniformly dispersed in the transparent resin to form a sea-island structure. Due to the difference in refractive index between the resin and the light diffusing agent, the light is reflected like a mirror on the surface of the light diffusing agent, and the light diffusing effect is achieved after multiple reflections. At the same time, the addition amount of light diffusing agent, particle size and distribution, and refractive index determine the optical properties of the material.

The action mechanism of the light diffusion material is mainly to add organic or inorganic particles to the base material of the diffusion plate as scattering particles, and when the light passes through the scattering layer, it continuously refracts, reflects and scatters in two media with different refractive indexes, so as to produce the effect of optical diffusion.

As the base material of light diffusion material, it needs very light transmittance. Common base materials mainly includePPMMA，PS和PC。

The refractive index determines how bright the material looks, and a higher refractive index indicates that more light is reflected at the interface between the material and air. Generally, the higher the refractive index, the lower the light transmittance.

Guangdong Xinlong New Materials Co., Ltd. was established inIn November 1998, it included Shaolong engineering plastics and Xinlong new materials, including: electrical materials, flame retardant plastics, laser engraving plastics, PC plastics, lighting electricians, Bayer 8600, Bayer 6557, Bayer 6555, Bayer 2805, Saudi Arabia 1004R, etc. The company integrates R & D, production, sales, and technical services, and specializes in providing various solutions for modified engineering plastics. The products are widely used in electronic appliances, communications, optoelectronics, automobiles, security and other fields. For more than 20 years, it has been deeply cultivated in the electrical industry, lighting industry and light diffusion industry, and has achieved good recognition and reputation in the industry. The company has a dedicated technical research and development team and analysis of experimental equipment, is committed to providing customers with a full range of materials and product solutions.

RELATED INFORMATION

The road of dream building

Xinlong shares become the off-campus practice base of Guangdong Light Industry Vocational and Technical College

2023-06-27

The company's "high-performance halogen-free flame retardant polycarbonate" products won the "Guangdong Province famous high-tech products" certificate

2023-04-26

The research and development of Xinlong's materials won the 2020-2022 China Plastic Processing Industry Outstanding Scientific and Technological Achievement Award.

2023-04-26