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Study on humidity aging property of adhesive/carbon-carbon composites joints C. Wang1,2, Y. D. Huang1, G.Y.Zhang2 1Department
of Applied Chemistry, Harbin Institute of Technology, P.O.Box 410, Harbin
150001, People’s
Republic of China, (Received 11/02; accepted 2/03)
This paper studied the property of adhesive/C-C composites joints in humidity aging with infrared spectrum (IR) energy dispersive X-ray spectroscopy (EDX) scanning electron microscopy (SEM) and shear strength. The decline ratio of shear strength of adhesive/C-C composites joints treated by silane coupling agent were lowest than that treated by sand paper burnish or by chemical oxidation in humidity aging. And shear strength tests also proved time-temperature equivalence between temperature and humidity aging time. SEM of adhesive/C-C composites joints showed that there were no marked changes of the interface and surface of adhesive/C-C composites joints in humidity aging. The changes of IR of the adhesive and EDX of adhesive/C-C composites joints indicated that water penetrative speed on the surface of C-C composites was faster than that on the surface of the adhesive, and water penetrative speed on the surface of the adhesive and C-C composites during humidity aging depended on temperature and humidity aging time Keywords: humidity aging, time-temperature equivalence, adhesive/C-C composites joints, treatment method |
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