STEREOLITHOGRAPHIC RESIN COMPOSITION

摘要

A resin composition for forming a three-dimensional object by optical stereolithography, which contains 5 to 65 vol% of aluminum oxide fine particles having an average particle diameter of 3 to 70 mu m and 5 to 30 vol% of whiskers having a diameter of 0.3 to 1 mu m, a length of 10 to 70 mu m and an aspect ratio of 10 to 100, the total content of the aluminum oxide fine particles and the whiskers being 10 to 70 vol%. According to the resin composition for forming a three-dimensional object by optical stereolithography, a high-quality three-dimensional object by optical stereolithography that has high heat resistance with a high heat distortion temperature and high rigidity with a high flexural modulus and that is free from a dimensional change on account of a low linear thermal expansion coefficient even when temperature varies can be obtained by optical stereolithography with high dimensional accuracy.