Dynamic mechanical properties of whisker/PA66 composites at high strain rates

被引：64

作者：

Hao, XY

Gai, GS ^{[1
]}

Lu, FY

Zhao, XJ

Zhang, YH

Liu, JP

Yang, YF

Gui, DY

Nan, CW

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Natl Univ Def Technol, Inst Tech Phys, Changsha 410073, Peoples R China

[3] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100080, Peoples R China

[4] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

来源：

POLYMER | 2005年 / 46卷 / 10期

关键词：

potassium titanate whisker (TKW); composite; split Hopkinson pressure bar (SHPB);

D O I：

10.1016/j.polymer.2005.02.042

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

PA66 reinforced with potassium titanate whisker (TKW) treated with silane coupling agent were prepared using a twin-screw extruder. The quasi-static and dynamic mechanical properties were investigated. Addition of 40 wt % TKW to PA66 improves all the investigated properties. The high-speed dynamic tests with TKW[PA66 were carried on split Hopkinson pressure bar (SHPB). The loading pulses in SHPB experiments were precisely controlled to ensure that the composite specimens deformed at a nearly constant strain rate under dynamically equilibrated stress during dynamic compression. The constitutive curves and equations at high strain rates have been obtained. TKW/PA66 composites show 20-100% increase on reference modulus and 20% increase on compression strength. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3528 / 3534

页数：7

共 23 条

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