期刊
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
卷 34, 期 2, 页码 125-133出版社
ELSEVIER SCI LTD
DOI: 10.1016/S1359-835X(02)00261-0
关键词
environmental degradation; high-temperature properties; resin transfer moulding(RTM); temperature gradient
Composite material parts may be exposed during their service life to through thickness temperature gradients where the difference between the inner and outer faces may exceed 150 degreesC. The effect of these conditions on 4,4'-bismaleimidodiphenylmethane and diallylbisphenol-A based BMI resin reinforced with glass fabrics was investigated as a function of location through the laminate thickness. It was found that a gradient of chemical, physical and mechanical properties exists through the laminate thickness. A decrease of interlaminar shear strength and an increase of glass transition temperature follow high temperature exposure that causes resin chemistry changes. The material becomes less flexible and more sensitive to microcrack development as a result of these changes. (C) 2003 Elsevier Science Ltd. All rights reserved.
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