Vehicle PC/ABS alloy and preparation method thereof

Abstract

The invention discloses a vehicle PC / ABS alloy and a preparation method thereof. The vehicle PC / ABS alloy comprises the following raw materials in parts by mass: 20-30 parts of an acrylonitrile-butadiene-styrene copolymer, 70-80 parts of polycarbonate, 4-6 parts of a methyl methacrylate-butadiene-styrene copolymer, 6-8 parts of a compatilizer, 8-12 parts of a fire retardant, 0.6-1 part of an anti-warping agent, and 0.2-0.4 parts of an anti-oxidant. The preparation method comprises the following steps: drying ABS, PC, MBS, the compatilizer and the fire retardant, uniformly mixing the materials,and performing the steps of extrusion by a double screw extruder, pelletizing, and drying to obtain the vehicle PC / ABS alloy. The vehicle PC / ABS alloy has excellent mechanical properties and low-temperature impact performance, the preparation method is simple, a prepared sheet material has the advantages of high impact intensity, good smoothness, and no warping, and can be used as an automobile sheet material.

Description

technical field [0001] The invention relates to a PC / ABS alloy for vehicles and a preparation method thereof, belonging to the technical field of plastic alloys. Background technique [0002] PC / ABS alloy is a plastic alloy material with excellent performance, which has good mechanical properties and forming and processing properties, and the surface gloss of the product is high. However, existing PC / ABS alloys are prone to warpage and stress cracking when they are used to prepare plates, and the elongation at break is low. For example, CN 106280203A discloses an alloy plate of ABS / PC for automobiles. The PC The notched impact strength of the plate prepared by / ABS alloy is high, but there is obvious warpage, which affects the use effect of the plate; CN101875766 A discloses a special composite material for low warpage notebook and its preparation method. The composite material is composed of PC resin, ABS Resin, toughener, flame retardant, synergistic flame retardant, comp...

AI Technical Summary

Problems solved by technology

However, existing PC / ABS alloys are prone to warpage and stress cracking when they are used to prepare plates, and the elongation at break is low. For example, CN 106280203A discloses an alloy plate of ABS / PC for automobiles. The PC The notched impact strength of the plate prepared by / ABS alloy is high, but there is obvious warpage, which affects the use effect of the plate; CN101875766 A discloses a special composite material for low warpage notebook and its preparation method. The composite material is composed of PC resin, ABS Resin, toughener, flame retardant, synergistic flame retardant, compatibilizer, anti-warping agent, antioxidant and processing aids, the added anti-warping agent is modified talcum powder or / and carbonic acid Calcium powder, the notebook shell made of this composite material is not easy to warp, but this composite material is only suitable for injection molding, not suitable for extrusion molding

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