Dimensional Accuracy of ABS-Resin Molding Material.

Abstract

ABS resin is widely used in the fabrication of general-purpose plastics. This material has a structure in which butadiene rubber particles are dispersed like minute islets within an acrylonitrile-styrene copolymer matrix, and the phenomenon whereby butadiene rubber particles are deformed in the molding process is wellknown. This paper reports the strong relationship between the deformation of the butadiene rubber particles dispersed near the root region of the pole and the error of the pole perpendicularity when the plain-plate-shaped specimen of ABS-resin on which the pole stands vertically, is made by the injection molding process.