Study on Toughening of the Epoxy

Chun Fa Ouyang; Duo You Zhang; Qun Gao; Yu Tao Shi; Kang Sheng Zheng

doi:10.4028/www.scientific.net/AMR.624.260

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 624Study on Toughening of the Epoxy

Study on Toughening of the Epoxy

Abstract:

Abstract. The effect of styrene-The effect of hydroxy-terminated polybutadiene liquid rubber (HTPB) and softened agent on the performance of epoxy resin are studied. The mechanical properties of the composites investigated and the toughening mechanism were studied trough the SEM. In the HTPB/epoxy resin composites, the hardness is reduced but the elongation and the shear strength increased . Added 20wt%HTPB, the breaking elongation can be up to 16.19% and the shear strength rise to 13.74MPa. From the images of the SEM, the globular and trumpet-like hole and shear zone can hinder the development of the cracks, thus increasing the toughness of the epoxy resint. In the softened agent/epoxy resin composites, The addition of the softened agent, the breaking elongation and the impact strength have increased. From the images of SEM,we found that ,with the addition of the softened agent ,the single phase structure turns to two-phase structure and the bicontinuous phase and the brittle fracture turns to ductile fracture.

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Periodical:

Advanced Materials Research (Volume 624)

Pages:

260-263

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.624.260

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Online since:

December 2012

Authors:

Chun Fa Ouyang, Duo You Zhang, Qun Gao, Yu Tao Shi, Kang Sheng Zheng

Keywords:

Epoxy, HTPB, Mechanical Property, Softened Agent

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