Mechanical and thermal expansion properties of glass fibers reinforced PEEK composites at cryogenic temperatures

被引：118

作者：

Chu, X. X. ^{[1
,2
]}

Wu, Z. X. ^{[1
,2
]}

Huang, R. J. ^{[1
,2
]}

Zhou, Y. ^{[1
]}

Li, L. F. ^{[1
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

来源：

CRYOGENICS | 2010年 / 50卷 / 02期

关键词：

PEEK; Glass fiber; Mechanical properties; Thermal expansion; Low temperature; BEHAVIOR;

D O I：

10.1016/j.cryogenics.2009.12.003

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Polyetheretherketone (PEEK) has been widely used as matrix material for high performance composites. In this work, 30% chopped glass fibers reinforced PEEK composites were prepared by injection molding, and then the tensile, flexural and impact properties were tested at different temperatures. The modulus, strength and specific elongation of glass fibers reinforced PEEK at room temperature, 77K and 20K have been compared. And the fracture morphologies of different samples were investigated by scanning electron microscopy (SEM). The results showed a dependence of mechanical properties of glass fibers reinforced PEEK composites on temperature. The coefficient of thermal expansion of unfilled PEEK and glass fibers reinforced PEEK were also investigated from 77 K to room temperature. The results indicated that the thermal expansion coefficient (CTE) of PEEK matrix was nearly a constant in this temperature region, and it can be significantly decreased by adding glass fibers. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：84 / 88

页数：5

共 14 条

[1]

Mechanical properties of injection molded hydroxyapatite-polyetheretherketone biocomposites [J].