Mode I and Mode II fracture toughness of high-performance 3000 g mole-1 reactive poly(etherimide)/carbon fiber composites

被引：14

作者：

Bullions, TA

Mehta, RH

Tan, B

McGrath, JE

Kranbuehl, D

Loos, A

机构：

[1] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[2] Dupont Co, DuPont Nylon, Chattanooga, TN 37415 USA

[3] Eastman Kodak Co, Rochester, NY 14620 USA

[4] Coll William & Mary, Dept Chem, Williamsburg, VA 23187 USA

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 1999年 / 30卷 / 02期

基金：

美国国家科学基金会;

关键词：

polymer-matrix composites (PMCs); poly(etherimide) thermoset; fracture toughness; fractography; powder processing;

D O I：

10.1016/S1359-835X(98)00111-0

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

A phenylethynylphthalic anhydride terminated poly(etherimide) oligomer with a molecular weight of M-n = 3000 g mole(-1) has been synthesized for use in high-performance composite and adhesive applications. This reactive poly(etherimide) exhibits excellent thermooxidative stability and solvent resistance upon curing at high temperatures. Towpreg has been produced by coating unsized, G30-500, 12k carbon fiber tow with this oligomer in a powder form. A minimal dry powder prepregging technique was employed for rapid processing to circumvent the problems associated with high viscosity and to perform the operation in an organic solvent-free environment. This towpreg has been manufactured into flat composite laminates via manual lay-up and hot press consolidation and cure. The Mode I and Mode II fracture toughness of these composite panels has been investigated via the double cantilever beam (DCB) and end-notch flexure (ENF) test methods. Fracture surface and microstructure features are correlated with the measured mechanical properties. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：153 / 162

页数：10

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