Crack-growth behavior of epoxy adhesives modified with liquid rubber and cross-linked rubber particles under mode I loading

被引：38

作者：

Imanaka, Makoto ^{[1
]}

Motohashi, Satoshi ^{[1
]}

Nishi, Kazuaki ^{[1
]}

Nakamura, Yoshinobu ^{[2
]}

Kimoto, Masaki ^{[3
]}

机构：

[1] Osaka Univ Educ, Dept Technol Educ, Osaka 5828582, Japan

[2] Osaka Inst Technol, Dept Appl Chem, Asahi Ku, Osaka 5358582, Japan

[3] Tech Res Inst Osaka Prefecture, Mat Technol Div, Izumi Ku, Osaka 5941157, Japan

来源：

INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES | 2009年 / 29卷 / 01期

关键词：

A; Epoxy; M. Fracture mechanics; M. Double cantilever beam specimen; FRACTURE-BEHAVIOR; VOID NUCLEATION; JOINTS; PHASE;

D O I：

10.1016/j.ijadhadh.2007.11.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The crack-growth resistance (R-curve) of bulk single-edge notch bend (SENB) and adhesively bonded double cantilever beam (DCB) specimens was investigated under mode I loading conditions using two types of rubber-modified epoxy adhesive: one was a liquid rubber (CTBN)-modified adhesive and the other was a cross-linked rubber particle (DCS)-modified adhesive. As a result, for both the SENB and DCB specimens, the gradient of the R-curve for the DCS-modified adhesive was steeper than that for the CTBN-modified one, however, the difference in fracture toughness between DCS- and CTBN-modified adhesives is smaller for DCB than for SENB specimens. To elucidate such behavior, crack-growth simulation based on Gurson's model was conducted, where the DCS- and CTBN-modified adhesives were characterized by both the initial void fraction and nucleation. The difference in the behavior of R-curves was also observed in simulations. Moreover, it was found that the difference in fracture surface roughness observed by SEM for both adhesives correspond to the variation in R-curves. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：45 / 55

页数：11

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