High-rigidity optical diffusion PC material, and preparation method and application thereof

Abstract

The invention provides a high-rigidity optical diffusion PC material, and a preparation method and an application thereof. The high-rigidity optical diffusion PC material comprises the following components in parts by weight: 75-100 parts of PC resin, 5-25 parts of enhancer, 1.5-5 parts of optical diffusant, 1-5 parts of processing aids and 0-3 parts of other aids. According to the high-rigidity optical diffusion PC material provided by the invention, rigidity is improved, so that a shrinking percentage and a linear expansion coefficient of the diffusion PC can be greatly reduced, and thickness of an optical diffusion PC illumination lamp product can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a high-rigidity light-diffusing PC material and a preparation method and application thereof. Background technique [0002] Patent (CN104725816A) proposes a preparation method of glass fiber reinforced flame-retardant light-diffusing PC composite material, but the patent does not propose how to solve the problem of rough surface and brittleness caused by the addition of glass fiber. And because the glass fiber is easy to cause anisotropy due to dispersion problems in the process of sending out the tube, it will cause problems such as cracking of the lamp tube under light and high temperature. [0003] The patent (CN105542426A) proposes a low-expansion flame-retardant light-diffusing PC composite material for LED lamp tubes and its preparation method. This patent first proposes that enhanced light-diffusing PC can be used for ultra-thin lamp tubes, but there are several proble...

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Problems solved by technology

[0002] The patent (CN104725816A) proposes a preparation method of glass fiber-reinforced flame-retardant light-diffusing PC composite material, but the patent does not propose how to solve the problem of surface roughness and brittleness caused by the addition of glass fiber

And because the glass fiber is easy to cause anisotropy due to dispersion problems in the process of sending out the tube, it will cause problems such as cracking of the lamp tube under light and high temperature.

[0003] The patent (CN105542426A) proposes a low-expansion flame-retardant light-diffusing PC composite material for LED lamp tubes and its preparation method. This patent first proposes that enhanced light-diffusing PC can be used for ultra-thin lamp tubes, but there are several problems in this patent: 1 , using flat glass fibers with a width and thickness of 16 microns. This glass fiber is different from cylindrical glass fibers with an aspect ratio. Not only does it not provide reinforcement, but it is also easy to greatly reduce the The fluidity and interfacial bonding force of PC are compromised, and the bonding part with PC is easy to produce pores, which makes it easy to become brittle, rough surface, etc.; The reason of its own purity will affect the light transmittance; 3. Wollastonite is a needle-like structure, which can increase the strength, but wollastonite is a non-transparent material, which will affect the light transmittance of light-diffusing PC; Low expansion can be achieved, but there are problems such as surface problems, brittleness and light transmission

At present, the cost of ordinary PC light diffusion materials is relatively high, the linear expansion coefficient is relatively large during extrusion molding, and the cooling molding is slow when making thinner products, and the size and curvature are difficult to control. Therefore, high rigidity, low expansion, and low cost have been developed. Light-diffusing PC material is an urgently needed technology in the market

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