STUDY OF INTERFACIAL PERFORMANCE OF T800 /TDE85 COMPOSITE

Abstract

Abstract: On account of its low density and high performance as well as high module,carbon fiber reinforced plastic materials have been used broadly in the aerospace field,the properties of which are dependent on the interface between carbon fiber and resin matrix. For this reason,to discuss the interface performance is extremely significant. Experiments studied T800 /TDE85,comparing to T300 and CCF300 carbon fibers. The surface element concentrations, surface functional groups of fibers were examined by X-ray photoelectron spectroscopy (XPS) . XPS spectra indicates that changes take place in the amount,structure and chemical environment of functional group,and formation of the physical and chemical effect in the interface. By the DCT21 measuring apparatus,we tested the dynamic contact angle between carbon fiber and TDE85 epoxy resin. The result reveals that TDE85 epoxy resin can wet the carbon fiber well. On that basis,with the microdebonding experiments,we characterized the interfacial shear strength of the composites,microdebonding outcome shows that interface shear strength of T800 /TDE85 is 79. 7MPa,which is higher 21% and 24% respectively than T300 /TDE85,CCF300 /TDE85.

Key words: T800, XPS, wettability, microdebond, interfacial performance

CLC Number:

ZHANG Lin, ZHENG Li, CHI Bo. STUDY OF INTERFACIAL PERFORMANCE OF T800 /TDE85 COMPOSITE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2013, 0(3): 58-61.

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