期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 40, 期 12, 页码 2013-2019出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2009.09.003
关键词
Bamboo; Polymer-matrix composites (PMCs); Interface; Cure
Moisture absorption is a major concern for natural fibers used as reinforcement in structural composites. This paper reports a detailed study on the moisture sorption characteristics of bamboo strips and their influence on the interfacial shear strength (IFSS) of bamboo/vinyl ester composite. The IFSS determined by pull-out test decreased dramatically as the fabrication humidity increased. The bamboo strips provide a reservoir of moisture which diffuses into the interfacial region and inhibits the hardening of vinyl ester matrix. The interface of the bamboo/vinyl ester composite can also be damaged due to moisture exposure after fabrication. Post-fabrication exposure of composites to moisture was found to be less damaging than the moisture exposure during the composite fabrication. The IFSS of the composite decreased by nearly 40% in the first 9 d of water immersion. Further immersion up to 100 d did not cause any further reduction in interfacial shear strength. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
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