Scratch-resistant PP plastic and preparation method thereof

Abstract

The invention discloses a scratch-resistant PP plastic and a preparation method thereof, the scratch-resistant PP plastic is obtained by co-extrusion granulation of a composite filler and polypropylene resin, and the composite filler is obtained by mixing a modified filler and carboxylated polypropylene micro wax powder according to a weight ratio, ball milling and drying. Carboxylated polypropylene micro wax powder is grafted on the surface of the modified filler, so that the dispersion effect of the modified filler in polypropylene and the combination effect of the modified filler and a polypropylene material are improved. In the preparation process of the modified filler, a compound of nano hydrotalcite and nano silicon dioxide is mixed with a nano graphene dispersion liquid, and then heating and ultrasonic reaction are performed, so that a layer of graphene is grafted and fixed on the surface of the compound of nano hydrotalcite and nano silicon dioxide, on one hand, the surface friction coefficient of the plastic is reduced, and on the other hand, hydrotalcite sheet layers and nano silicon dioxide exposed when the surface of the plastic is scratched can be reduced, and obviousscratches are avoided.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a scratch-resistant PP plastic and a preparation method thereof. Background technique [0002] Polypropylene, referred to as PP, is a thermoplastic synthetic resin with excellent performance. Processing performance, etc., which has made polypropylene widely developed and applied in many fields such as machinery, automobiles, electronic appliances, construction, textiles, packaging, agriculture, forestry, fishery and food industry since its inception. PP plastic products are widely used in processing, transshipment and During use, the surface is affected by factors such as collisions, which will produce a large number of scratches, which will affect the aesthetics of PP plastic products. Therefore, PP plastics need to be treated to improve their scratch resistance; [0003] In the prior art, the preparation of scratch-resistant polypropylene plastic is to ad...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the scratch-resistant polypropylene plastic is prepared by adding additives that can reduce the friction coefficient of the plastic surface to the polypropylene plastic to achieve the effect of scratch resistance. The commonly used additives include amides, silicones and polytetrafluoroethylene. Vinyl fluoride, this kind of anti-scratch agent will precipitate a layer of lubricating layer on the surface of the material after being added to play a lubricating effect. On the one hand, the precipitated lubricating substance will make the surface of polypropylene plastic sticky and affect its use. On the one hand, with the continuous precipitation of the scratch-resistant agent, the scratch-resistant performance of the plastic will decline significantly. In order to solve the above problems, it is necessary to provide a plastic surface that will not cause stickiness due to the precipitation of the scratch-resistant agent and has good scratch resistance. The polypropylene plastic of performance, the present invention provides following technical scheme