Polycarbonate resin/polystyrene resin alloy material and preparation method thereof

Abstract

The invention discloses a polycarbonate resin / polystyrene resin alloy material and a preparation method thereof. The polycarbonate resin / polystyrene resin alloy material comprises the following raw materials: 50-90 parts of polycarbonate resin, 10-50 parts of polystyrene resin, 1-10 parts of compatilizer, 3-15 parts of flexibilizer and 0.2-0.5 part of pearlescent pigment. The preparation method comprises the following steps: drying the polycarbonate resin and the polystyrene resin for 3-6 hours, performing high-speed stirring and uniformly mixing with the compatilizer, the flexibilizer and the pearlescent pigment at a temperature above the melting point and under the thermal decomposition temperature and finally blending by a double-screw extruder. The proportion of the polycarbonate resin and the polystyrene resin in the alloy material is rationally adjusted, the resplendent effect of the polycarbonate resin / polystyrene resin alloy material is obvious by adding the pearlescent pigment; and besides the polycarbonate resin / polystyrene resin alloy material has the advantages of good environmental protection property and no need of spray paint.

Description

technical field [0001] The invention relates to the technical field of polymer engineering plastics, in particular to a polycarbonate resin / polystyrene resin alloy material with a pearlescent illusion effect and a preparation method thereof. Background technique [0002] Polystyrene (polystyrene resin) resin has a glass transition temperature of 80-100°C, an amorphous state density of 1.04-1.06 g / cm3, and a melting temperature of 240°C. It has excellent heat insulation, insulation and transparency, and its long-term use temperature is 0-1 70°C, but brittle, easy to crack at low temperature. Polycarbonate (polycarbonate resin) resin density: 1.18~1.22 g / cubic centimeter, linear expansion rate: 3.8×10^-5cm / ℃, heat distortion temperature: 135℃; colorless and transparent, heat-resistant and impact-resistant Well, it has a high refractive index and good processing performance, but it is sensitive to notches, the product has high internal stress, high melt viscosity, poor fluidit...

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Problems solved by technology

In addition, since the polycarbonate resin / polystyrene resin alloy material is prone to delamination during the injection molding process, and the addition of polystyrene resin will reduce the notched impact strength of the material, the selection of compatibilizers and tougheners is very important for polystyrene resins. The performance of the carbonate resin / polystyrene resin blend system has a great influence; at the same time, the pearlescent powder is easily sheared during the blending process, thus losing the original pearlescent effect, so the selection of the particle size of the pearlescent powder and the way of adding it have a great influence on the performance of the blending system. The appearance quality of the product has a great influence

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