Method of manufacturing polycarbonate/vinyl cyanide-butadiene-styrol copolymer alloy

Abstract

The invention discloses a method for preparing a polyester carbonate / acrylonitrile-butadience-styrene copolymer. The method chooses maleic anhydride grafted ethylene-octene copolymer / organic modified needle-shaped wollastonite compound flexibilizer as raw materials, i.e. both organic and inorganic rigid granular flexibilizers are used, the maleic anhydride grafted ethylene-octene copolymer, organic modified needle-shaped wollastonite and polyester carbonate / acrylonitrile-butadience-styrene copolymer are melted and blended in a double screw extruder to achieve a high-performance alloy material. The polyester carbonate / acrylonitrile-butadience-styrene copolymer prepared by the method has excellent comprehensive mechanical performance and dimensional stability; the notch impact strength is as high as 1050J / m, the elongation at break is 145 percent, the tensile strength reaches 65.5MPa, the bending strength is 96.5MPa, the flexural modulus is up to 2850MPa, and the heat distortion temperature is as high as 115.5 DEG C under high load (1.82MPa). The copolymer is applicable to manufacturing internal and external decorative articles of autos, household appliances, IT products and other industrial products.

Description

technical field [0001] The invention relates to a preparation method of a polymer alloy, in particular to a preparation method of a polycarbonate / acrylonitrile-butadiene-styrene copolymer alloy, which can be used in industries such as automobile interior and exterior decoration parts, home appliances, and IT. The product belongs to the technical field of polymer processing. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance. It has the advantages of outstanding impact toughness, wide service temperature, good electrical insulation performance and dimensional stability. It has been applied in various industrial sectors, especially in automobiles. The manufacturing industry and the electrical and electronic industry are its two broad markets. However, polycarbonate has some disadvantages: high melt viscosity, difficult processing and molding, especially large-scale products, prone to stress cracking, high notch sensitivity, n...

AI Technical Summary

Problems solved by technology

However, polycarbonate has some disadvantages: high melt viscosity, difficult processing and molding, especially large-scale products, prone to stress cracking, high notch sensitivity, solvent resistance, and expensive, so that the application of polycarbonate is restricted. There are certain restrictions, and it is difficult to popularize and apply

[0005] However, many studies on the expansion and toughening of polycarbonate / acrylonitrile-butadiene-styrene copolymer alloys use elastomers or other polymer materials with excellent toughness, and the modified alloys Although the impact properties of the material have been improved to varying degrees, the heat distortion temperature, tensile strength, flexural strength and flexural modulus of the material are correspondingly reduced to varying degrees, which greatly limits the wide application of the alloy material.