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블록공중합체 스티렌-이소프렌-스티렌의 응력이완거동
Stress Relaxation Behavior in a Styrene-Isoprene-Styrene Block Copolymer
HWAHAK KONGHAK, April 1984, 22(2), 59-63(5), NONE
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Abstract
열가소성 탄성체 스티렌-이소프렌-스티렌 블록공중합체의 응력이완거동을 Rheometrics mechanical spectrometer를 이용하여 조사하였다.
선형 점탄성 구간에서의 응력이완은 steady shear flow 중지후의 이완과는 뚜렷이 달랐으며 이 차이를 ABA형 블록공중합체의 morphology와 관련하여 검토하였다.
선형 점탄성 구간에서의 응력이완은 steady shear flow 중지후의 이완과는 뚜렷이 달랐으며 이 차이를 ABA형 블록공중합체의 morphology와 관련하여 검토하였다.
The stress relaxation behavior of an elastomeric styrene-isoprene-styrene block copolymer was studied in simple shear using a Rheometrics mechanical spectrometer.
The data exhibit two distinct stress relaxations, a stress relaxation after sudden strain in a linear viscoelastic zone and a stress relaxation after cessation of steady shear flow.
Results are discussed in terms of two phase morphology of ABA block copolymers.
The data exhibit two distinct stress relaxations, a stress relaxation after sudden strain in a linear viscoelastic zone and a stress relaxation after cessation of steady shear flow.
Results are discussed in terms of two phase morphology of ABA block copolymers.
