Fracture behavior of a self-healing, toughened epoxy adhesive

被引：85

作者：

Jin, Henghua ^{[1
,2
]}

Miller, Gina M. ^{[1
]}

Pety, Stephen J. ^{[1
,2
]}

Griffin, Anthony S. ^{[1
,2
]}

Stradley, Dylan S. ^{[1
,2
]}

Roach, Dennis ^{[3
]}

Sottos, Nancy R. ^{[1
,2
]}

White, Scott R. ^{[1
,2
]}

机构：

[1] Univ Illinois, Urbana, IL 61801 USA

[2] Univ Illinois, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA

[3] Sandia Natl Labs, FAA Airworthiness Assurance Ctr, Livermore, CA 94550 USA

来源：

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2013年 / 44卷

基金：

美国国家科学基金会;

关键词：

Epoxy adhesive; Self-healing; Microcapsule; Fracture toughness; OPENING METATHESIS POLYMERIZATION; FIBER-REINFORCED COMPOSITES; FILLED EPOXY; RUBBER PARTICLES; MATRIX ADHESION; POLYMERS; MECHANISMS; TOUGHNESS; SIZE; FAILURE;

D O I：

10.1016/j.ijadhadh.2013.02.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A self-healing, toughened epoxy adhesive is demonstrated based on a commercial structural adhesive film. Self-healing is achieved via embedded microcapsules containing dicyclopentadiene monomer and solid particles of bis(tricyclohexylphosphine)-benzylidine ruthenium (IV) dichloride (Grubbs') catalyst. Recovery of fracture toughness is assessed through fracture testing of width tapered double cantilever beam (WTDCB) specimens. Healing efficiencies as high as 58% were achieved for 6.6 wt% DCPD microcapsules and 10 mg Grubbs' catalyst. However, virgin fracture toughness is reduced with the addition of ca. 117 mu m diameter microcapsules as a result of suppression of the damage zone as revealed by transmission optical micrographs. The uniform dispersal of microcapsules throughout a rubber toughened epoxy adhesive formulated using EPON 828, piperidine and CTBN alleviated the suppression effect and demonstrated retention of virgin fracture toughness of adhesives. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：157 / 165

页数：9

共 45 条

[1] EPOXY COMPOSITES BASED ON GLASS-BEADS .2. MECHANICAL-PROPERTIES [J].

AMDOUNI, N ;

SAUTEREAU, H ;

GERARD, JF .

JOURNAL OF APPLIED POLYMER SCIENCE, 1992, 46 (10) :1723-1735

[2] The effect of adherend thickness on the failure of adhesively-bonded single-lap joints [J].

Aydin, MD ;

Özel, A ;

Temiz, S .

JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY, 2005, 19 (08) :705-718

[3] Use of surface modified recycled rubber particles for toughening of epoxy polymers [J].

Bagheri, R ;

Williams, MA ;

Pearson, RA .

POLYMER ENGINEERING AND SCIENCE, 1997, 37 (02) :245-251

[4]

Baker A.A., 2002, ADV BONDED COMPOSITE

[5] Nanocapsules for self-healing materials [J].

Blaiszik, B. J. ;

Sottos, N. R. ;

White, S. R. .

COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (3-4) :978-986

[6] Self-Healing Polymers and Composites [J].

Blaiszik, B. J. ;

Kramer, S. L. B. ;

Olugebefola, S. C. ;

Moore, J. S. ;

Sottos, N. R. ;

White, S. R. .

ANNUAL REVIEW OF MATERIALS RESEARCH, VOL 40, 2010, 40 :179-211

[7] Microcapsule induced toughening in a self-healing polymer composite [J].

Brown, EN ;

White, SR ;

Sottos, NR .

JOURNAL OF MATERIALS SCIENCE, 2004, 39 (05) :1703-1710

[8] In situ poly(urea-formaldehyde) microencapsulation of dicyclopentadiene [J].

Brown, EN ;

Kessler, MR ;

Sottos, NR ;

White, SR .

JOURNAL OF MICROENCAPSULATION, 2003, 20 (06) :719-730

[9] 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

[10] PHASE-SEPARATION IN EPOXY-RESINS CONTAINING POLYETHERSULFONE [J].

BUCKNALL, CB ;

PARTRIDGE, IK .

POLYMER, 1983, 24 (05) :639-644

← 1 2 3 4 5 →