Pickering emulsion-based fabrication of epoxy and amine microcapsules for dual core self-healing coating

Yi, Huan1; Deng, Yonghong2; Wang, Chaoyang1

2016-09-14

10.1016/j.compscitech.2016.07.022

COMPOSITES SCIENCE AND TECHNOLOGY   影响因子和分区

0266-3538

1879-1050

Facile and efficient encapsulation of epoxy and tetraethylenepentamine (TEPA) in polyurea (PU) microcapsules are accomplished with Pickering emulsion templates by one-step, interfacial polymerization. The formation of microcapsule is deftly achieved by lightly shaking Pickering emulsions. The whole process is time andenergy saving hardly with any waste and residual. Epoxy microcapsules keep the spherical shape with core content of more than 90 wt%. Amine microcapsules shrink a little for evaporation of water and the conserved TEPA after air-dried is 82.1 wt%. The shell walls of two microcapsules are about 1 mu m. With the protection of PU shells, both microcapsules exhibit excellent thermal resistance. Furthermore, self-healing function of epoxy and amine microcapsules is measured by incorporating microcapsules into epoxy coating, and tested by brine-submersion corrosion-accelerating experiment. The dual core self-healing coatings demonstrate excellent self-repairing performance with the crack of embedded microcapsules and reaction between epoxy and amine. The core materials can outflow from microcapsules and form isolations for metal substrate from corrosion hazard, therefore, make for good self-repairing and preserving function of the self-healing coating. (C) 2016 Elsevier Ltd. All rights reserved.

Functional composites Hybrid composites Smart materials Polymer-matrix composites (PMCs) Interface

SCI ; EI

英语

通讯

Natural Science Foundation of Guangdong Province[S20120011057]

Materials Science

Materials Science, Composites

WOS:000383005900007

ELSEVIER SCI LTD

20163102664997

Coatings ; Coremaking ; Corrosion ; Emulsification ; Epoxy resins ; Hybrid materials ; Intelligent materials ; Interfaces (materials) ; Microstructure ; Polymer matrix composites ; Repair ; Self-healing materials

Metals, Plastics, Wood and Other Structural Materials:415 ; Foundry Practice:534.2 ; Chemical Operations:802.3 ; Coating Materials:813.2 ; Polymeric Materials:815.1 ; Organic Polymers:815.1.1 ; Maintenance:913.5 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Guangdong, Peoples R China
2.South Univ Sci & Technol China, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China

Yi, Huan,Deng, Yonghong,Wang, Chaoyang. Pickering emulsion-based fabrication of epoxy and amine microcapsules for dual core self-healing coating[J]. COMPOSITES SCIENCE AND TECHNOLOGY,2016,133:51-59.

Yi, Huan,Deng, Yonghong,&Wang, Chaoyang.(2016).Pickering emulsion-based fabrication of epoxy and amine microcapsules for dual core self-healing coating.COMPOSITES SCIENCE AND TECHNOLOGY,133,51-59.

Yi, Huan,et al."Pickering emulsion-based fabrication of epoxy and amine microcapsules for dual core self-healing coating".COMPOSITES SCIENCE AND TECHNOLOGY 133(2016):51-59.