Development of a novel toughener for epoxy resins

被引：51

作者：

Dai, Jia-Bin ^{[1
,2
,3
]}

Kuan, Hsu-Chiang ^{[4
]}

Du, Xu-Shen ^{[5
]}

Dai, Shao-Cong ^{[5
]}

Ma, Jun ^{[1
,2
]}

机构：

[1] Univ S Australia, Sch Adv Mfg & Mech Engn, Adelaide, SA 5095, Australia

[2] Univ S Australia, Mawson Inst, Adelaide, SA 5095, Australia

[3] Harbin Inst Technol, Heilongjiang, Peoples R China

[4] Far E Univ, Dept Comp Applicat Engn, Tainan 744, Taiwan

[5] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

POLYMER INTERNATIONAL | 2009年 / 58卷 / 07期

基金：

澳大利亚研究理事会;

关键词：

toughener; epoxy; composites; interface; RUBBER-MODIFIED EPOXY; MECHANICAL-PROPERTIES; FRACTURE-BEHAVIOR; BLOCK-COPOLYMERS; PARTICLES; NANOCOMPOSITES; NANOPARTICLES; COMPOSITES; MORPHOLOGY; TOUGHNESS;

D O I：

10.1002/pi.2604

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

BACKGROUND: Conventional tougheners for brittle epoxy resins form micrometre-sized particles with ineffective interfaces, and meet toughening requirements with 10-20 wt% of toughener, which unfortunately causes deterioration of other desirable properties. RESULTS: We developed a novel polyurea toughener using a facile synthesis method from isophorone diisocyanate and polyoxyalkyleneamine. Polyurea forms thick-interface particles, and creates an effective toughness improvement: 265% increase in fracture energy release rate. More importantly, polyurea causes no deterioration of other important properties. Different from conventional epoxy/rubber or epoxy/thermoplastic composites, the epoxy/polyurea composite shows Newtonian rheological behaviour, a convenient property for processing. CONCLUSION: This study describes a novel polyurea toughener. Its unique feature is that toughness can be significantly improved at low toughener content (5 wt%) without losing other desirable properties. The study illuminates the importance of the interface for toughening in polymer blends/composites. (C) 2009 Society of Chemical Industry

引用

页码：838 / 845

页数：8