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Cyanate ester resin modified by hydroxyl‐terminated polybutadiene: Morphology, thermal, and mechanical properties
Author(s) -
Liu Jing,
Ding Naidong,
Xu Renfu,
He Qihui,
Shen Jian,
Hu Baixing
Publication year - 2011
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21952
Subject(s) - materials science , cyanate ester , polybutadiene , hydroxyl terminated polybutadiene , composite material , toughness , dynamic mechanical analysis , differential scanning calorimetry , curing (chemistry) , scanning electron microscope , nitrile rubber , thermal stability , cyanate , natural rubber , ultimate tensile strength , copolymer , polymer chemistry , polymer , epoxy , chemical engineering , physics , thermodynamics , engineering
Abstract Hydroxyl‐terminated polybutadiene (HTPB) rubber was used as a modifier for bisphenol A dicyanate ester (BADCy) to improve its toughness. The effect of catalyst on the curing behavior of the resin and the curing techniques were developed by differential scanning calorimetry. The dynamic mechanical analysis, thermogravimetry analysis, and tensile test were used to study the thermal behavior, mechanical properties, and dynamic mechanical performance of the modified BADCy resins. Results show that addition of HTPB resulted in improved toughness while maintaining relatively good thermal stability. Additional, phase separation phenomenon was confirmed by the analysis of scanning electron microscope. For the toughening of the resin, the main toughening mechanism is shear yielding and crack branching. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers