Method of manufacturing polycarbonate/polyester alloy

Abstract

The invention discloses a preparation method of polycarbonate / polyester alloy. Glycidyl methacrylate grafted ethylene-octylene multipolymer / organic modified needle-shaped aedelforsite composite toughener, i.e. a technology of simultaneously using organic / inorganic rigid particle toughener is adopted; the glycidyl methacrylate grafted ethylene-octylene multipolymer, organic modified needle-shaped aedelforsite, polycarbonate and polyester are melted and mixed in a double-screw extruder, to obtain high-performance alloy material. The prepared polycarbonate / polyester alloy has excellent integrated mechanical properties and size stability, the notched impact strength reaches 1200J / m, the tensile strength reaches 67MPa, the elongation at break reaches 250 percent, the flexural strength is up to98MPa, the flexural modulus reaches 2750MPa, and the thermal deformation temperature in high load (1.82MPa) is up to 105 DEG C. Therefore, the prepared polycarbonate / polyester alloy can be applied incars, and to outer decorations, household electrical appliances, IT and the like industrial products.

Description

A kind of preparation method of polycarbonate / polyester alloy technical field The invention relates to a preparation method of a polymer alloy, in particular to a preparation method of a polycarbonate / polyester alloy, which can be used for automotive interior and exterior decoration parts, household appliances, IT and other industrial products, and belongs to the technical field of polymer processing. Background technique 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 ...

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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. certain restrictions

However, although the impact properties of the alloy materials prepared by the current compatibilization and toughening system have been improved to varying degrees, it often leads to a decrease in the crystallization rate and crystallinity of the polyester, and the thermal deformation temperature, tensile strength, and bending strength of the material , flexural modulus and dimensional stability are correspondingly reduced to varying degrees, which greatly limits the wide application of this alloy material

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