Rheokinetic evaluation of self-healing agents polymerized by Grubbs catalyst embedded in various thermosetting systems

被引：26

作者：

Liu, Xing ^{[1
]}

Sheng, Xia ^{[2
]}

Lee, Jong Keun ^{[1
]}

Kessler, Michael R. ^{[2
]}

Kim, Jung Seok ^{[3
]}

机构：

[1] Kumoh Natl Inst Technol, Dept Polymer Sci & Engn, Gumi 731701, Gyungbuk, South Korea

[2] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

[3] Korea Railroad Res Inst, Railroad Struct Res Dept, Uieang 437757, Gyunggi, South Korea

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 13期

关键词：

Self-healing; Polymer-matrix composites (PMCs); Curing; Rheology; OLEFIN METATHESIS CATALYSTS; DICYCLOPENTADIENE; COMPOSITES; KINETICS; DAMAGE;

D O I：

10.1016/j.compscitech.2008.08.024

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In self-healing polymers and composites, the activity of the embedded chemical catalyst within the thermosetting matrix is critical to healing efficiency. Rheological behavior of ring-opening metathesis polymerization (ROMP)-based healing agents, triggered by 1st or 2nd generation Grubbs catalyst suspended in various thermosetting resins, was investigated using an oscillatory parallel plate rheometer. Gel times for various healing agents were determined from the crossover of storage and loss moduli vs. time curves to indicate the activity of the ROMP reaction. Gelation of healing agents initiated by 1st generation Grubbs catalyst occurred faster than those triggered by 2nd generation catalyst. It is suggested that the dissolution rate of the catalyst by the healing agent is an important factor in determining the overall ROMP reaction rate in situ. Optical and scanning electron microscopic observations showed that the finer, rod-like solid particles of the 1st generation catalyst were distributed more homogeneously throughout the cured matrix. The effects of different healing agents and thermosetting matrix systems on the ROMP reaction are discussed in detail. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2102 / 2107

页数：6

共 14 条

[1] Fracture testing of a self-healing polymer composite [J].

E. N. Brown ;

N. R. Sottos ;

S. R. White .

Experimental Mechanics, 2002, 42 (4) :372-379

[2]

HALLEY PJ, 1996, POLYM SCI ENG, V35, P593

[3] Catalyst morphology and dissolution kinetics of self-healing polymers [J].

Jones, AS ;

Rule, JD ;

Moore, JS ;

White, SR ;

Sottos, NR .

CHEMISTRY OF MATERIALS, 2006, 18 (05) :1312-1317

[4] Self-healing structural composite materials [J].

Kessler, MR ;

Sottos, NR ;

White, SR .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2003, 34 (08) :743-753

[5] Self-activated healing of delamination damage in woven composites [J].

Kessler, MR ;

White, SR .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2001, 32 (05) :683-699

[6] Characterization of dicyclopentadiene and 5-ethylidene-2-norbornene as self-healing agents for polymer composite and its microcapsules [J].

Lee, JK ;

Hong, SJ ;

Liu, X ;

Yoon, SH .

MACROMOLECULAR RESEARCH, 2004, 12 (05) :478-483

[7] Thermal analysis of ring-opening metathesis polymerized healing agents [J].

Lee, Jong Keun ;

Liu, Xing ;

Yoon, Sung Ho ;

Kessler, Michael R. .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2007, 45 (14) :1771-1780

[8] Characterization of diene monomers as healing agents for autonomic damage repair [J].

Liu, Xing ;

Lee, Jong Keun ;

Yoon, Sung Ho ;

Kessler, Michael R. .

JOURNAL OF APPLIED POLYMER SCIENCE, 2006, 101 (03) :1266-1272

[9] Rheokinetics of curing of epoxy resins near the glass transition [J].

Malkin, AY ;

Kulichikhin, SG ;

Kerber, ML ;

Gorbunova, IY ;

Murashova, EA .

POLYMER ENGINEERING AND SCIENCE, 1997, 37 (08) :1322-1330

[10] Self-healing kinetics and the stereoisomers of dicyclopentadiene [J].

Mauldin, Timothy C. ;

Rule, Joseph D. ;

Sottos, Nancy R. ;

White, Scott R. ;

Moore, Jeffrey S. .

JOURNAL OF THE ROYAL SOCIETY INTERFACE, 2007, 4 (13) :389-393

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