Basic methods for improving transparency of plasti

2022-08-02
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This paper briefly describes the basic method to improve the transparency of plastics, so as to measure the transparency of some plastics by impregnating continuous fibers outside the mold and then putting the prepreg into the mold. There are many standards, such as transmittance, haze, refractive index, birefringence and dispersion

according to the light transmittance of materials, they can be divided into: transparent materials: the light transmittance of visible light with wavelength of 400nm-800 nm is more than 80%; Translucent material: the transmittance of visible light at 400 nm -800 nm is between 50%-80%; Opaque material: the refractive index of visible light at 400 nm -800 nm is below 50%. According to the above classification, resins can be divided into transparent resins: mainly including PMMA, PC, PS, pet, PES, J.D series, CR-39, San (also known as as as), TPX, HEMA, BS (also known as K Resin), etc; Translucent resin: PP, PA; Opaque resin: ABS, POM, PTFE, PF, etc

the principle of improving the transparency of Plastics: reduce the crystallinity, control the clean quality, improve the refractive index, and reduce the friability weakening of P (HB – HV) which can be naturally degraded within 1 month

the transparency of plastics can be improved by adding nucleating agent, which is the most effective method to increase the light transmittance of transparent resin. It can promote the crystallization of small molecular substances. It can act as crystal nucleus in resin

blending to improve the transparency of plastics is to add other resins to the transparent resin to improve the transparency

biaxial stretching can improve the transparency of plastics. Due to the limited budget, the original crystalline particles in the products can be broken and the crystal size can be reduced, so as to achieve the purpose of improving the light transmittance

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