Design of microcapsule system used for self-healing cementitious material

Design of microcapsule system used for self-healing cementitious material

Zhang, M.
Han, N.
Xing, F.
Schlangen, H.E.J.G.

Civil Engineering and Geosciences

Structural Engineering

2013-06-16

For a microcapsule based self-healing system in the cementitious material, a fundamental issue is to find and facilitate a suitable microcapsule system, concerning either the material selection or design and manufacture process. In this study, urea formaldehyde resin is used for the shell of microcapsule, and bisphenol – an epoxy resin E-51 diluted by n-butyl glycidy ether (BGE) is adopted as the heal-agent inside the microcapsule. The production process mainly includes pre-polymerization preparation, emulsification, acidification and curing stage. The fundamental reaction mechanisms with respect to the synthesis process and the properties of the obtained microcapsule are discussed in this paper. Meanwhile, the healing mechanism by means of catalyst MC120D is further explored. Results show that the microcapsule obtained with the adopted production process can be used for the self-healing system in the cementitious materials.

self-healing
microcapsule
in situ polymerization
activation energy
reaction order
curing kinetics

http://resolver.tudelft.nl/uuid:f61bc173-3dc2-4fe5-8152-b62db2cfce60

Magnel Laboratory for Concrete Research

9789082073713

uuid:3078d20c-2173-4c13-a4d7-106207c78577

ICSHM 2013: Proceedings of the 4th International Conference on Self-Healing Materials, Ghent, Belgium, 16-20 June 2013

Institutional Repository

conference paper

(c) 2013 The Author(s)