Temperature effect on nano-rubber toughening in epoxy and epoxy/carbon fiber laminated composites

被引：55
作者：
Xu, Feng [1 ,2 ]
Du, Xu-Sheng [1 ]
Liu, Hong-Yuan [1 ]
Guo, Wei-Guo [2 ]
Mai, Yiu-Wing [1 ]
机构：
[1] Univ Sydney, Ctr Adv Mat Technol CAMT, Sch Aerosp Mech & Mechatron Engn J07, Sydney, NSW 2006, Australia
[2] Northwestern Polytech Univ, Sch Aeronaut, Xian 710072, Shaanxi Provinc, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2016年 / 95卷
基金：
澳大利亚研究理事会;
关键词：
Polymer-matrix composites (PMCs); Particle-reinforcement; Fracture toughness; Delamination; Nano-rubber particles; FRACTURE-TOUGHNESS; MECHANICAL-PROPERTIES; POISSONS RATIO; PARTICLE-SIZE; BULK MODULUS; POLYMERS; CAVITATION; BEHAVIOR; SILICA;
D O I：
10.1016/j.compositesb.2016.04.019
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The nano-rubber toughening effects on neat epoxy and epoxy/carbon fiber composites under a range of temperatures from -80 degrees C to 50 degrees C were investigated. Nano-rubber particles (100 nm) toughened significantly neat epoxy at all temperatures with a maximum toughness value at 20 degrees C and lower values on either side. The influence of temperature on the delamination fracture toughness of epoxy/carbon fiber composites with nano-rubber filled epoxy matrices compared to those with neat epoxy matrices mirrored the same trend of nano-rubber particles on epoxy. However, except at -50 degrees C, the toughness of nano-rubber/epoxy cannot be fully transferred to the composites against delamination. Optical (OM) and scanning electron microscopy (SEM) examinations revealed that different extent of plastic void growth and matrix shear yielding led to different toughening efficiency on (a) bulk epoxies and (b) epoxy/carbon fiber laminates with varying intensity of crack-wake bridging and delamination crack growth. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：423 / 432
页数：10
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