EFFECT OF PARTICLE-SIZE ON FRACTURE-TOUGHNESS OF EPOXY-RESIN FILLED WITH ANGULAR-SHAPED SILICA

被引:85
作者
NAKAMURA, Y [1 ]
YAMAGUCHI, M [1 ]
KITAYAMA, A [1 ]
OKUBO, M [1 ]
MATSUMOTO, T [1 ]
机构
[1] KOBE UNIV,FAC ENGN,DEPT IND CHEM,NADA KU,KOBE 657,JAPAN
关键词
EPOXY RESIN; FRACTURE TOUGHNESS; SILICA PARTICLE; STRAIN ENERGY; FRACTOGRAPHY; CRACK PROPAGATION;
D O I
10.1016/0032-3861(91)90050-S
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 effect of particle size on the fracture behaviour of cured epoxy resin filled with angular-shaped silica was studied. Angular-shaped silica particles were prepared by crushing fused natural raw silica and were classified into six groups with different mean sizes ranging from 2 to 47-mu-m. Critical stress intensity factor (K(c)) and critical strain energy release rate (G(c)) of the cured epoxy resin filled with these silica particles were measured. Both K(c) and G(c) values increased with an increase in particle size of the silica. Scanning electron microscopic observations of crack tips and fractured surfaces showed that the damage zone was formed at the crack tip by particle fracture and by crack diverging. This phenomenon became more pronounced with increase in the particle size. The higher K(c) and G(c) values appear to be derived from the dispersion of the stress concentrated at the crack tip due to the crack diverging and from energy absorption due to the formation of a damage zone.
引用
收藏
页码:2221 / 2229
页数:9
相关论文
共 44 条
[1]  
BASCOM WD, 1981, J MATER SCI, V16, P2657, DOI 10.1007/BF02402827
[2]   FRACTURE OF EPOXY-MODIFIED AND ELASTOMER-MODIFIED EPOXY POLYMERS IN BULK AND AS ADHESIVES [J].
BASCOM, WD ;
COTTINGTON, RL ;
JONES, RL ;
PEYSER, P .
JOURNAL OF APPLIED POLYMER SCIENCE, 1975, 19 (09) :2545-2562
[3]   FAILURE OF BRITTLE POLYMERS BY SLOW CRACK GROWTH .1. CRACK-PROPAGATION IN POLYMETHYLMETHACRYLATE AND TIME-TO-FAILURE PREDICTIONS [J].
BEAUMONT, PWR ;
YOUNG, RJ .
JOURNAL OF MATERIALS SCIENCE, 1975, 10 (08) :1334-1342
[4]   EFFECT OF INTERFACIAL BONDING ON TOUGHNESS OF GLASS FILLED POLYMERS [J].
BROUTMAN, LJ ;
SAHU, S .
MATERIALS SCIENCE AND ENGINEERING, 1971, 8 (02) :98-&
[5]  
BUCKNALL CB, 1978, ADV POLYM SCI, V27, P121
[6]   MORPHOLOGY AND MECHANICAL-PROPERTIES OF AMINE-TERMINATED BUTADIENE-ACRYLONITRILE EPOXY BLENDS [J].
BUTTA, E ;
LEVITA, G ;
MARCHETTI, A ;
LAZZERI, A .
POLYMER ENGINEERING AND SCIENCE, 1986, 26 (01) :63-73
[7]   STRENGTH OF BRITTLE MATERIALS CONTAINING SECOND PHASE DISPERSIONS [J].
EVANS, AG .
PHILOSOPHICAL MAGAZINE, 1972, 26 (06) :1327-&
[8]   CRACK DEFLECTION PROCESSES .1. THEORY [J].
FABER, KT ;
EVANS, AG .
ACTA METALLURGICA, 1983, 31 (04) :565-576
[9]   FAILURE MECHANISMS IN TOUGHENED EPOXY-RESINS - A REVIEW [J].
GARG, AC ;
MAI, YW .
COMPOSITES SCIENCE AND TECHNOLOGY, 1988, 31 (03) :179-223
[10]   FRACTURE OF A BRITTLE PARTICULATE COMPOSITE .2. THEORETICAL ASPECTS [J].
GREEN, DJ ;
NICHOLSON, PS ;
EMBURY, JD .
JOURNAL OF MATERIALS SCIENCE, 1979, 14 (07) :1657-1661