1545 でんぷん系生分解性プラスチックの動的圧縮特性に与える温度の影響(S11-4 バイオマス由来材料の成形加工と特性評価(4)生分解性プラスチックの成形性と機械的性質,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)
詳細
The effect of strain rate and temperature on compressive properties of starch-based biodegradable plastics (Nihon Cornstarch Co., CPR-M2) was examined. Dynamic stress-strain curves of starch-based biodegradable plastics were measured over a wide range of strain rates from 10^<-5> s^<-1> to 10^4 s^<-1>, using a quasi-static compression testing machine and a split Hopkinson pressure bar (SHPB) method. A master curve of 7% flow stress, reduced to 297 K, was made. The values of activation energies related to the α and β relaxation processes were respectively estimated from the master curve of 7 % flow stress and from the best fit of equations based on Ree-Eyring theory and Bauwens' treatment.
