Toughening Self-healing Epoxy Resin by Addition of Microcapsules-Reference-Cited by-同舟云学术

Toughening Self-healing Epoxy Resin by Addition of Microcapsules

Published:2011-03 Issue:2-3 Volume:19 Page:223-226
ISSN:0967-3911
Container-title:Polymers and Polymer Composites
language:en
Short-container-title:Polymers and Polymer Composites

Author:

Li Haiyan¹,Wang Rongguo¹,Liu Wenbo¹

Affiliation:

1. Centre for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150001, P.R. China

Abstract

Microcapsules, filled with healing agent, not only has the ability to heal automatically the epoxy materials but also it can increase the virgin fracture toughness of epoxy. We investigated the effect of microcapsules on the fracture toughness of epoxy resins. The fracture toughness are measured using a tapered double-cantilever beam (TDCB) specimen. The fracture toughness depend strongly on the concentration of microcapsules added to the epoxy. Fracture of the neat epoxy is brittle, exhibiting a mirror fracture surface. Addition of 10 wt.% poly (urea-formaldehyde) (PUF) yields up to 58.2% increase in fracture toughness and induced a change in fracture plane morphology to hackle markings. Toughening mechanisms was study by observing the morphology of fracture plane by SEM.

Publisher

SAGE Publications

Subject

Materials Chemistry,Polymers and Plastics,Ceramics and Composites

Link

http://journals.sagepub.com/doi/pdf/10.1177/0967391111019002-326

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