AAS樹脂の射出成形品における熱安定性の解析

概要

論文の詳細を見る
Acrylonitrile-acrylic elastomer-styrene terpolymer (AAS resin) was developed to improve weatherability of acrylonitrile-butadiene-styrene terpolymer (AAS resin). To compare thermal stability of both resins, test pieces of SSA and ABS resins were injection molded at various temperatures and the Izod impact value of the resulting moldings was then made to find the relationship between this value and deteriaration of the resins. AAS resin was molded at temperatures from 180℃ to 280℃. The impact value of the resulting moldings was almost constant for temperatures up to 260℃, with the first major decrease occuring at 280℃. In contrast, the impact value of conventional ABS resin moldings constantly decreased as the molding temperature elevated. To explain this phenomenon in the both resins, two types of test program steps were undertaken : (1) The cause of the change in characteristics of the AAS resin was first determined by : obtaning its stress-strain curve in a high-speed flexural strength test ; measuring its infrared absorption spectrum ; and determining its flow properties with a constant-pressure extrusion type rheometer ; (2) The distribution of elastomer in the resin was observed with an electron microscope. It was found that the decrease of impact values of both resins at high temperatures is caused by deteriosation of the elastomer. Aiso, it was found that the different relationships between the impact value and molding temperatures for AAS and ABS resins are due to the difference between the rates of themal degradation of the acrylic slastomer and butadiene elastomer.
社団法人日本材料学会の論文
1992-01-15

AAS樹脂の射出成形品における熱安定性の解析

スポンサーリンク

概要

著者

関連論文

スポンサーリンク