Effects of clay orientation and aspect ratio on mechanical behavior of nylon-6 nanocomposite

被引:187
作者
Weon, JI [1 ]
Sue, HJ [1 ]
机构
[1] Texas A&M Univ, Dept Mech Engn, Polymer Technol Ctr, College Stn, TX 77843 USA
关键词
nylon-6/clay nanocomposite; aspect ratio; orientation;
D O I
10.1016/j.polymer.2005.05.094
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The mechanical properties of nylon-6/clay nanocomposites with variations in clay aspect ratio and orientation were studied. A large-scale simple shear process was utilized to alter the clay aspect ratio and orientation within the reference nanocomposite. It was found that the modulus, strength, and heat distortion temperature of the nanocomposites decreased as the clay aspect ratio and degree of orientation were reduced. Furthermore, the reduction of clay aspect ratio and orientation led to an increase in fracture toughness and ductility. The Halpin-Tsai and Mori-Tanaka micromechanics-based models were implemented to gain a better understanding with regard to the dependence of clay structural parameters, i.e. aspect ratio and orientation, on the reinforcement effect of the nanofillers. The micromechanical models can accurately describe the relationship between clay structural parameters and the corresponding moduli for exfoliated nanocomposites. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:6325 / 6334
页数:10
相关论文
共 63 条
[1]  
Adams D.F., 1967, Journal of Composite Materials, V1, P4, DOI [10.1177/002199836700100102, DOI 10.1177/002199836700100102]
[2]  
[Anonymous], FRACTURE MECH POLYM
[3]  
Ashton J.E., 1969, PRIMER COMPOSITE MAT
[4]   ANNEALING OF ISOTROPIC NYLON-6,6 [J].
BABATOPE, B ;
ISAAC, DH .
POLYMER, 1992, 33 (08) :1664-1668
[5]   In situ synthesis of polymer-clay nanocomposites from silicate gels [J].
Carrado, KA ;
Xu, LQ .
CHEMISTRY OF MATERIALS, 1998, 10 (05) :1440-1445
[6]  
Christiani B.R., 1998, US Patent, Patent No. [5 747 560, 5747560]
[7]   THE ELASTICITY AND STRENGTH OF PAPER AND OTHER FIBROUS MATERIALS [J].
COX, HL .
BRITISH JOURNAL OF APPLIED PHYSICS, 1952, 3 (MAR) :72-79
[8]   Fiber orientation during equal channel angular extrusion of short fiber reinforced thermoplastics [J].
Creasy, TS ;
Kang, YS .
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS, 2004, 17 (03) :205-227
[9]   Preparation and characterization of polyimide/organoclay nanocomposites [J].
Delozier, DM ;
Orwoll, RA ;
Cahoon, JF ;
Johnston, NJ ;
Smith, JG ;
Connell, JW .
POLYMER, 2002, 43 (03) :813-822
[10]   THE DETERMINATION OF THE ELASTIC FIELD OF AN ELLIPSOIDAL INCLUSION, AND RELATED PROBLEMS [J].
ESHELBY, JD .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1957, 241 (1226) :376-396