Study on interface compatibility of T700S/QY8911 composite

T700S/QY8911 composite was prepared by hot melt mixing prepreg using autoclave processing. The viscosity-temperature property of QY8911 was studied, and then the interface compatibility of T700S and QY8911 composite was synthetically investigated by surface tension and contact angle measurement, int...

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Bibliographic Details
Published in:Hang kong cai liao xue bao 2011-04, Vol.31 (2), p.43-48
Main Authors: Peng, Gong-Qiu, Yang, Jin-Jun, Cao, Zheng-Hua, Xie, Fu-Yuan
Format: Article
Language:Chinese
Subjects:
Autoclaves
Contact angle
Fracture mechanics
Glass transition temperature
Interfacial shear stresses
Mechanical properties
Morphology
Prepregs
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Summary:T700S/QY8911 composite was prepared by hot melt mixing prepreg using autoclave processing. The viscosity-temperature property of QY8911 was studied, and then the interface compatibility of T700S and QY8911 composite was synthetically investigated by surface tension and contact angle measurement, interfacial shear stress test, glass transition temperature(T(g)) determination before and after moisture absorption, basic mechanical properties tests and fracture morphology analysis. Results show that QY8911 bismaleimide possessed longer temperature and time range at low viscosity, excellent technological applicability of T700S/QY8911 prepreg, and the optimal temperature for making prepreg is 90~110 degree C. The interfacial shear stress of T700S/QY8911 composite has good retention ratio at high temperature, and its T(g) descend only 19 degree C after 360 hours' immersion. In addition, the retention ratio of basic mechanical properties was above 50% under high temperature and humidity, and close connection between
ISSN:1005-5053
DOI:10.3969/j.issn.1005-5053.2011.2.009