环氧/聚砜共混体系粘弹特征研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2000, Vol. 21 ›› Issue (S1): 153-155.

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STUDY ON THE VISCOELASTICITY CHARACTERISTICS OF EPOXY/POLYSULFONE BLENDS

SUN Zhi-jie, YIN Li-xin, KANG Ya-jun

Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China)

Received:1999-06-03 Revised:1999-08-28 Online:2000-11-25 Published:2000-11-25

Abstract

Abstract: Testing methods such as DMA, TBA and dynamic viscoelastometer were utilized to study the viscoelasticity of epoxy dicyandiamide blend toughened by polysulfone. TDCB samples were used to find out the value of G IC  of the blend systems. Consequently, the relationship between G IC  and viscoelasticity was clarified. The results verified that, in epoxy/polysulfone blends, the ductile polysulfone, as a continuous phase, covered cured epoxy particles and a "network film particles" structure was produced, which gave the blend system viscoelasticity and finally achieved toughness and good comprehensive properties.

Key words: composites, resin mat rix, viscoelasticity, toughening

SUN Zhi-jie;YIN Li-xin;KANG Ya-jun. STUDY ON THE VISCOELASTICITY CHARACTERISTICS OF EPOXY/POLYSULFONE BLENDS[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2000, 21(S1): 153-155.

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STUDY ON THE VISCOELASTICITY CHARACTERISTICS OF EPOXY/POLYSULFONE BLENDS

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