Fracture behavior of core-shell rubber-modified clay-epoxy nanocomposites

被引:92
作者
Gam, KT
Miyamoto, M
Nishimura, R
Sue, HJ [1 ]
机构
[1] Texas A&M Univ, Dept Engn Mech, Polymer Technol Ctr, College Stn, TX 77843 USA
[2] Kaneka Texas Corp, Pasadena, TX 77507 USA
关键词
D O I
10.1002/pen.10137
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Morphology and fracture mechanisms in two nanoclay-filled epoxy systems were investigated using both microscopy and spectroscopy tools. Clay exfoliation was achieved using a series of sample preparation steps, and confirmed using wide angle X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. Significant improvement in modulus was obtained when clay exfoliation was achieved. Incorporation of core-shell rubber (CSR) in both clay-filled epoxy systems leads to greatly enhanced fracture toughness. Optical microscopy and TEM observations of the CSR-modified nanocomposites suggest that CSR cavitation, shear yielding of the matrix, clay layer delamination, CSR bridging, crack bifurcation, and crack deflection are among the operative toughening mechanisms observed, depending on the nature of the epoxy matrix utilized.
引用
收藏
页码:1635 / 1645
页数:11
相关论文
共 28 条
[1]  
Biswas M, 2001, ADV POLYM SCI, V155, P167
[2]  
Chen CG, 2001, SAMPE J, V37, P11
[3]   EFFECT OF MATRIX DUCTILITY ON THE FRACTURE-BEHAVIOR OF RUBBER-TOUGHENED EPOXY-RESINS [J].
CHEN, TK ;
JAN, YH .
POLYMER ENGINEERING AND SCIENCE, 1995, 35 (09) :778-785
[4]   Nylon 6 nanocomposites: the effect of matrix molecular weight [J].
Fornes, TD ;
Yoon, PJ ;
Keskkula, H ;
Paul, DR .
POLYMER, 2001, 42 (25) :9929-9940
[5]   FAILURE MECHANISMS IN TOUGHENED EPOXY-RESINS - A REVIEW [J].
GARG, AC ;
MAI, YW .
COMPOSITES SCIENCE AND TECHNOLOGY, 1988, 31 (03) :179-223
[6]  
Holik AS, 1979, MICROSTRUCT SCI, V7, P357
[7]   MECHANICAL-PROPERTIES OF NYLON 6-CLAY HYBRID [J].
KOJIMA, Y ;
USUKI, A ;
KAWASUMI, M ;
OKADA, A ;
FUKUSHIMA, Y ;
KURAUCHI, T ;
KAMIGAITO, O .
JOURNAL OF MATERIALS RESEARCH, 1993, 8 (05) :1185-1189
[8]   SYNTHESIS OF NYLON-6-CLAY HYBRID BY MONTMORILLONITE INTERCALATED WITH EPSILON-CAPROLACTAM [J].
KOJIMA, Y ;
USUKI, A ;
KAWASUMI, M ;
OKADA, A ;
KURAUCHI, T ;
KAMIGAITO, O .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1993, 31 (04) :983-986
[9]   ONE-POT SYNTHESIS OF NYLON-6 CLAY HYBRID [J].
KOJIMA, Y ;
USUKI, A ;
KAWASUMI, M ;
OKADA, A ;
KURAUCHI, T ;
KAMIGAITO, O .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1993, 31 (07) :1755-1758
[10]  
LAN T, 1995, CHEM MATER, V7, P2144, DOI 10.1021/cm00059a023