Post-fire mechanical properties of marine polymer composites

被引:119
|
作者
Mouritz, AP [1 ]
Mathys, Z [1 ]
机构
[1] DSTO, Aeronaut & Maritime Res Lab, Melbourne, Vic 3001, Australia
关键词
post-fire mechanical properties; glass-reinforced polymer composites; polyester matrix; vinylester matrix; phenolic matrix;
D O I
10.1016/S0263-8223(00)00043-X
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Changes to the tensile and flexure properties of marine-grade glass-reinforced polyester, vinyl ester and resole phenolic composites after exposure to radiant heat are investigated. The properties were determined at room temperature after the composites had been exposed to heat fluxes of 25-100 kW/m(2) for 325 s or to a heat flux of 50 kW/m(2) for increasing times up to 1800 s. The stiffness and failure load of all three composites decreased rapidly with increasing heat flux or time due mainly to the thermal degradation of the resin matrix. The post-fire tension and flexure properties of the resole phenolic composite were similar to the properties of the other composites, despite its superior fire resistance. Models are presented for determining the post-fire mechanical propel-ties of fire-damaged composites, and are used to estimate the reductions in failure load of composite ship materials caused by fire. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:643 / 653
页数:11
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