Preparation method of high-light transmittance and self-cleaning polycarbonate sheet

Abstract

The invention belongs to the technical field of materials, and particularly discloses a high-light transmittance and self-cleaning polycarbonate sheet and a preparation method. The polycarbonate sheet is composed of a polycarbonate base material and a self-cleaning film, a micro-nano structure is formed on the surface of the self-cleaning film, and the polycarbonate base material is coated with the self-cleaning film, so that it is guaranteed that the sheet has good self-cleaning performance. The self-cleaning film is mainly prepared from polycarbonate and hydrophobic nano silica, polycarbonate and hydrophobic nano silica are dissolved in a tetrahydrofuran solution, sufficient ultrasonic dispersion or stirring dispersion is performed, and an uniform mixed solution is formed; then the polycarbonate base material is coated with the mixed solution, then the polycarbonate base material is placed into 50 DEG C oven, and the high-light transmittance and self-cleaning polycarbonate sheet is obtained after tetrahydrofuran is fully dried. The sheet has high light transmittance and also has good self-cleaning performance. The sheet does not contain fluoride, free of additives, non-toxic and high in light transmittance, has the self-cleaning performance and can be widely used in the fields of exterior wall decoration glass, safety glasses, instrument panels, lamp outer covers and the like.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a method for preparing a highly light-transmitting self-cleaning polycarbonate sheet. Background technique [0002] Polycarbonate (PC) is one of the five widely used engineering plastics. It has comprehensive and balanced mechanical, electrical and heat resistance properties, especially known for its excellent impact strength and creep resistance, high light transmittance, and good mechanical properties. Especially impact toughness is the best among engineering plastics. [0003] Due to the excellent performance of PC, its products and blended materials have been widely used in electronics, electrical appliances, machinery, automobiles, textiles, light industry and construction industries; especially in glass and decorative materials, they have been widely used in recent years. promotion and application. However, polycarbonate products will be polluted by the air environment ...

AI Technical Summary

Problems solved by technology

However, PTFE is a fluorine-containing compound, which is difficult to degrade in the natural environment, and its potential fluorine atoms also have certain toxic effects on organisms, so its application in daily life is limited.

On the other hand, due to the poor transparency of polytetrafluoroethylene, if polytetrafluoroethylene is coated on the surface of polycarbonate substrate, it will inevitably affect the light transmittance of the whole sheet, thereby affecting its use effect; , due to the poor compatibility of polytetrafluoroethylene and polycarbonate, it is difficult to effectively coat polytetrafluoroethylene on polycarbonate resin substrates, which affects the service life of the material

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