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Materials 2018, 11(6), 932; https://doi.org/10.3390/ma11060932

Study on Epoxy Resin Toughened by Epoxidized Hydroxy-Terminated Polybutadiene

School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
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Received: 7 May 2018 / Revised: 18 May 2018 / Accepted: 25 May 2018 / Published: 31 May 2018
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Abstract

Epoxy resin (EP) was toughened by epoxidized hydroxy-terminated polybutadiene (EHTPB), with the corresponding modified epoxy resin being prepared. In this paper, the microstructure of EHTPB-modified epoxy resin was characterized, while the influence of different contents of EHTPB on curing kinetics, mechanical properties, morphology, thermal properties, dynamic thermomechanical (DMA) properties and crosslink density of the modified epoxy resin were also discussed. The results showed that the EHTPB-modified epoxy resin was successfully prepared and cured completely. The activation energy (Ea) of the modified epoxy resin decreased after the addition of EHTPB. With an increase in the EHTPB content, the tensile strength (σm) of the modified epoxy resin decreased and the breaking elongation (εb) increased gradually. The initial decomposition temperature (T5%) and glass transition temperature (Tg) of the modified epoxy resin decreased with an increase in the EHTPB content. The modified epoxy resin had a rough fractured surface and the interface was blurred, presenting a ductile fracture. View Full-Text
Keywords: epoxidized hydroxy-terminated polybutadiene; epoxy resin; toughen; mechanical properties epoxidized hydroxy-terminated polybutadiene; epoxy resin; toughen; mechanical properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ge, Z.; Zhang, W.; Huang, C.; Luo, Y. Study on Epoxy Resin Toughened by Epoxidized Hydroxy-Terminated Polybutadiene. Materials 2018, 11, 932.

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