Spraying-free PC/PBT alloy material and preparation method thereof

Abstract

The invention discloses a spraying-free PC / PBT alloy material and a preparation method thereof, and relates to the field of high polymer materials. The spraying-free PC / PBT alloy material comprises, by weight, 40 to 60 parts of PC; 10 to 50 parts of PBT; 1-20 parts of PC special effect powder masterbatch; 1-15 parts of a compatilizer; 0.1 to 1 part of an antioxidant; and 0.1 to 1 part of a processing aid; wherein the PC special effect powder masterbatch comprises, by weight, 18 to 90 parts of PC, 5-80 parts of special effect powder or particles and 0.1-1 part of a processing aid. According tothe PC / PBT alloy material, the masterbatch is prepared from the special effect powder or particles through PC and then dispersed into the PC / PBT alloy material, the compatibility of the special effectpowder and matrix resin can be obviously improved, the dispersity of the special effect powder or particles is improved, and therefore flow marks and fisheyes on the surface of a product are eliminated, and weld lines are reduced; in addition, PC and PBT are used as alloy materials, so that the thermal deformation temperature of the material is effectively increased, and the market application range of the spraying-free material is greatly widened.

Description

technical field [0001] This application relates to the field of polymer materials, in particular to a spray-free PC / PBT alloy material and a preparation method thereof. Background technique [0002] As people pay more and more attention to environmental issues, more and more plastic products use spray-free materials, which are more environmentally friendly, recyclable, and less costly than traditional spray-painted materials. At the same time, spray-free materials can replicate special effects such as pearlescent, glittering, metallic luster and texture produced by spray paint, so as to meet diversified and differentiated customer needs, and can be widely used in handicrafts, home appliances, automobiles, electronic appliances, office supplies, etc. field. [0003] At present, the usual preparation method of spray-free materials is to add metal powder, pearl powder and other effect powders with special color and luster to the resin. By dispersing the special effect powder ...

AI Technical Summary

Problems solved by technology

By dispersing the special effect powder into the matrix resin, a special effect texture is presented. Although the special effect can be achieved by direct addition, the compatibility between the matrix resin and the special effect powder is poor, and the strong shear and Under strong pressure conditions, it is difficult for the special effect powder and the matrix resin material to achieve the same fluidity, especially for products with complex structures. The special effect powder oriented along the flow direction has the phenomenon of melt flow diversion, unstable flow velocity, and melt convergence. , causing the special effect powder to be unevenly distributed in the melt, and it is easy to form defects such as flow marks, fish eyes, and weld lines on the surface of the product, which greatly hinders and limits the market promotion and application of spray-free materials

[0004] Secondly, the spray-free materials on the market are mainly PP, ABS, PC / ABS, and the thermal deformation temperature of these materials is generally below 100 degrees, which is difficult to meet the high temperature resistance requirements of the automotive industry and other fields, which limits the spray-free materials. Promotion and application in some fields that require heat resistance

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