Embrittlement mechanisms of nylon 66/organoclay nanocomposites prepared by melt-compounding process

被引：0
|
作者：
Chen, L
Phang, IY
Wong, SC
Lv, PF
Liu, TX
机构：
[1] Fudan Univ, Inst Adv Mat, Shanghai, Peoples R China
[2] Inst Mat Res & Engn, Singapore, Singapore
[3] Univ Akron, Dept Mech Engn, Akron, OH USA
[4] Pingdingshan Inst Technol, Henan, Peoples R China
来源：
MATERIALS AND MANUFACTURING PROCESSES | 2006年 / 21卷 / 02期
关键词：
clay; fracture; nanocomposites; nylon; 66;
D O I：
10.1080/AMP-200068655
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nylon 66 nanocomposites with different smectite clay loadings were prepared by conventional melt compounding process. The fracture toughness decreases with increasing clay content, which is a direct result of reduced plastic zone size at the crack tip region. The fracture mechanisms were studied using double-notched four-point-bending (DN-4PB) technique. A constraining effect from nanoclay fillers on plastic deformation of matrix is revealed by transmission electron microscopy (TEM). Micron-sized and submicron voids could be observed around the clay platelets. The voids coalesce and form premature cracks that promote crack propagation, thus reducing toughness.
引用
收藏
页码：153 / 158
页数：6
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