Photochromic PVC plastic and preparation method thereof

Abstract

The invention provides a photochromic PVC plastic and a preparation method thereof. The photochromic PVC plastic comprises the following components in parts by weight: 90-95 parts of PVC powder, 0.05-0.3 part of photochromic raw powder and 5-10 parts of stabilizer. The invention also provides a preparation method of the photochromic PVC plastic, which comprises the following steps: adding the photochromic raw powder into the PVC powder according to the weight ratio, adding the stabilizer and mixing uniformly; putting the mixture into a film making machine, and controlling a certain temperature (180-200 DEG C); pulling out the film, and putting the film back into the film making machine, and repeating for 5-6 times; observing whether the film formation and color are uniform; and if the film formation and color are uniform, airing at room temperature. According to the photochromic PVC plastic, the photochromic plastic material can be produced by a method of directly adding the photochromic raw powder into the PVC powder; the photochromic PVC plastic can be widely applied to the market products, is beautiful and novel and has an ultraviolet indication function; and moreover, the photochromic PVC plastic is more durable than the products prepared from a common photochromic coating and realizes a more uniform color change effect.

Description

technical field [0001] The invention relates to a novel plastic product, in particular to a photochromic PVC plastic. 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. Contents of the invention [0003] The object of the present invention is to provide a kind of photochromic PVC plastic and its preparation method which can realize uniform color changing effect and durab...

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