A kind of light diffusing particle and its preparation method and thermoplastic light diffusing material and application thereof

Abstract

The invention discloses photodiffusion particles. The photodiffusion particles comprise, in parts by weight, 100 parts of organic trialkoxysilane monomers and 1-10 parts of inorganic particles. A preparation method of the photodiffusion particles comprises steps as follows: the inorganic particles are dispersed in an aqueous solution containing a dispersant and stirred for 20-40 min by a stirrer, the pH value is adjusted to 4.5-5.0, the organic trialkoxysilane monomers are added, the mixture is mixed, hydrolysate is obtained and continuously stirred for 20-40 min by the stirrer, the pH value of the hydrolysate is adjusted to 8.5-9.0, the hydrolysate reacts for 3-5 h and then is filtered, cleaned and dried, and the photodiffusion particles are obtained. According to the prepared photodiffusion particles, inorganic particles in small sizes are wrapped with organosilicon photodiffusion particles in large sizes, so that light rays can produce reflection on the surfaces of the inorganic particles to a certain extent when passing through the organosilicon photodiffusion particles, the light rays are scattered in a wider range, and the shielding effect and the haze of the material are improved while the light transmittance of the thermoplastic photodiffusion material comprising the photodiffusion particles is guaranteed.

Description

technical field The invention relates to the technical field of polymer materials, in particular to a light-diffusing particle and a preparation method thereof, and a thermoplastic light-diffusing material composed of the same and its application. Background technique Light-emitting diode (LED) is a solid-state semiconductor device that can directly convert electricity into light, with high luminous efficiency, low power consumption, long life, easy control, maintenance-free, safe and environmentally friendly. In 2010, the state identified energy-saving and environmental protection, new energy, and new materials as strategic emerging industries for key development, and promulgated the "Opinions on the Development of Semiconductor Lighting Energy-Saving Industry", which requires that by gathering innovative resources, highlighting technological progress, overcoming key bottlenecks, and promoting The development of LED industry. But the light emitted by the LED is similar to...

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Problems solved by technology

Silicone light diffusing agent is currently the most widely used organic light diffusing agent on the market. Patents CN86106218, CN200710194805, and CN201310016509 disclose the preparation method and application of polysilsesquioxane or copolymerized silsesquioxane microspheres, but these preparations The process is more complicated, and the prepared silicone microspheres have poor hiding power and low haze

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