Effects of carboxylated carbon nanotubes on the phase separation behaviour and fracture-mechanical properties of an epoxy/polysulfone blend

被引：62

作者：

Zheng, Nan ^{[1
,2
,3
]}

Sun, Weifu ^{[2
]}

Liu, Hong-Yuan ^{[2
]}

Huang, Yudong ^{[3
]}

Gao, Jiefeng ^{[2
,4
]}

Mai, Yiu-Wing ^{[2
]}

机构：

[1] Dalian Polytech Univ, Sch Light Ind & Chem Engn, Dalian 116034, Peoples R China

[2] Univ Sydney, Sch Aerosp Mech & Mechatron Engn J07, Ctr Adv Mat Technol, Sydney, NSW 2006, Australia

[3] Harbin Inst Technol, Sch Chem & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China

[4] Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Jiangsu, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2018年 / 159卷

基金：

澳大利亚研究理事会;

关键词：

Carbon nanotubes; Polymers; Mechanical properties; Rheology; MODIFIED EPOXY SYSTEMS; RUBBER-TOUGHENED EPOXY; RHEOLOGICAL BEHAVIOR; POLYMER BLEND; POLYETHERSULFONE; RESINS; NANOCOMPOSITES; POLYSULFONE; COMPOSITES; MORPHOLOGY;

D O I：

10.1016/j.compscitech.2018.02.039

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Epoxy resins are inherently brittle caused by their highly cross-linked network structure. Herein, we report an effective method of toughening without loss of mechanical properties. Carboxylated carbon nanotubes (CNT-COOHs) were added to an epoxy (EP)/polysulfone (PSF) blend to control the phase separation behavior, fracture toughness and mechanical properties of the resultant ternary composites. Although CNT-COOHs did not change the phase separation mechanism of the EP/PSF blend they had an important influence on the final phase morphology. Rheological analysis showed that the complex viscosity and the cure-reaction rate of EP/PSF were increased by adding CNT-COOHs, leading to a significant suppression of the phase separation process which stopped at an earlier stage. Also, the fracture, mechanical and thermal properties of the EP/PSF/CNT-COOH composites were found to be increased due to the presence of CNT-COOH5. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：180 / 188

页数：9

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