Photochromic PVB resin and preparation method thereof

Abstract

The invention provides photochromic polyvinyl butyral (PVB) resin and a preparation method thereof. The photochromic PVB resin consists of the following components in parts by weight: 90-95 parts of PVB powder, 0.05-0.3 part of photochromic raw powder and 5-10 parts of auxiliaries. The preparation method specifically comprises the steps of adding the photochromic raw powder to the PVB powder according to weight parts, adding the auxiliaries, uniformly mixing, adding to a film producing machine, controlling a certain temperature (at about 180-200 DEG C), pulling out a film, replacing the film in the film producing machine, repeatedly pulling and placing for 5-6 times and observing whether film and color are uniform, if so, pulling out the film, and drying at room temperature. The photochromic PVB resin disclosed by the invention has the beneficial effects that the photochromic PVB resin, which adopts a way of directly adding the photochromic raw powder to the PVB powder, can produce a photochromic resin material, and the photochromic resin material can be widely applied to market products and has an ultraviolet light indicating function; the photochromic PVB resin, compared to general products prepared from photochromic coating, is more durable and uniform in chromic effect.

Description

technical field [0001] The invention relates to novel plastic products, in particular to a photochromic PVB resin. Background technique [0002] Plastic products are very commonly used in life and industry, and various functional plastic products emerge in endlessly. In recent years, photochromic or temperature-sensitive plastic products have also appeared continuously. On the existing plastic products, the method of adding photochromic coating or pasting photochromic film has the disadvantage that the overall discoloration of the plastic product cannot be realized, only one layer of discoloration, and it is prone to cracking, and the discoloration effect is not enough Uniform. In the case of long-term use, it is also prone to coating wear, fading, and affecting use. PVB resin is a thermoplastic resin, that is, polyvinyl butyral resin, which has good industrial applications. Contents of the invention [0003] The object of the present invention is to provide a kind of p...

AI Technical Summary

Problems solved by technology

[0002] Plastic products are very commonly used in life and industry, and various functional plastic products emerge in endlessly. In recent years, photochromic or temperature-sensitive plastic products have also appeared continuously. On the existing plastic products, the method of adding photochromic coating or pasting photochromic film has the disadvantage that the overall discoloration of the plastic product cannot be realized, only one layer of discoloration, and it is prone to cracking, and the discoloration effect is not enough Uniform

In the case of long-term use, it is also prone to coating wear, fading, and affecting use