【摘 要】
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Patch repair has been mainly used on as an important repair method for damage composite structure, in order to improve the bond strength between the patch and the composite surface. Low temperature ai
【机 构】
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Department of Equipment Maintenance and Remanufacturing, Academy of Armored Forces Engineering, Beij
【出 处】
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第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
Patch repair has been mainly used on as an important repair method for damage composite structure, in order to improve the bond strength between the patch and the composite surface. Low temperature air plasma process was used for surface treatment of carbon fiber/epoxy resin composites. Surface contact angle, chemical composition of surface, tensile shear strength and surface morphology were tested. The results show that compared with untreated specimen, surface contact angle of the composites decrease from 78°to 35.5°, surface energy increased about 2.3times, oxygen-containing groups improves greatly, the O/C ratios increased by approximately 70%. With the treating time increasing, the tensile shear strength increased first and then decreased, maximum strength promoted about 117%. According to the test results, four-stage model of plasma treatment for composite was presented.
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