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Preparation and characterization of microcapsule containing epoxy resin and its self-healing performance of anticorrosion covering material

Preparation and characterization of microcapsule containing epoxy resin and its self-healing performance of anticorrosion covering material,10.1007/s1

Preparation and characterization of microcapsule containing epoxy resin and its self-healing performance of anticorrosion covering material  
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Microencapsulated healing agents that possess adequate strength, long shelf-life, and excellent bonding to the host material are required for self-healing materials. The in situ encapsulation method is demonstrated over an order of magnitude size reduction for the preparation of urea-formaldehyde (UF) capsules filled with a healing agent, a mixture epoxy resin of the epoxy 711 and E-51. Capsules with diameters as small as about 100 μm are achieved under the agitation rate of 800 r min−1. The capsules possess a uniform UF shell wall (4 μm average thickness). By using the analysis of scanning electronic microscope (SEM), thermal analysis (TG-DTA) and FTIR, the characteristics of the microcapsules were investigated respectively. Successful self-healing has been demonstrated for anticorrosion covering materials with microcapsules.
Journal: Chinese Science Bulletin - CHIN SCI BULL , vol. 56, no. 4, pp. 439-443, 2011
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