Graphite sheet coating for improved thermal oxidative stability of carbon fiber reinforced/PMR-15 composites

被引：8
|
作者：
Miller, Sandi
Papadopoulos, Demetrios
Heimann, Paula
Inghram, Linda
McCorkle, Linda
机构：
[1] NASA, Glenn Res Ctr, Polymers Branch, Cleveland, OH 44135 USA
[2] Univ Akron, Dept Polymer Sci, Akron, OH 44325 USA
[3] Ohio Aerosp Inst, Cleveland, OH USA
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 10期
关键词：
A. polymer matrix composites; B. high temperature properties; A; coating; A. hybrid compounds;
D O I：
10.1016/j.compscitech.2005.10.022
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Expanded graphite was compressed into graphite sheets and used as a coating for carbon fiber reinforced PMR-15 composites. BET analysis of the graphite indicated an increase in graphite pore size on compression, however the material was proven to be an effective barrier to oxygen when prepreged with PMR-15 resin. Oxygen permeability of the PMR-15/graphite was an order of magnitude lower than the compressed graphite sheet. By providing a barrier to oxygen permeation, the rate of oxidative degradation of PMR-15 resin was decreased. As a result, the composite thermo-oxidative stability increased by up to 25%. The addition of a graphite sheet as a top ply on the composites yielded little change in the material's flexural strength or interlaminar shear strength. (c) 2005 Elsevier Ltd. All rights reserved.
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页码：2183 / 2190
页数：8
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