Fabrication of microcapsule-type composites with the capability of underwater self-healing and damage visualization

Hengyu Feng; Fei Yu; Yu Zhou; Ming Li; Linghan Xiao; Yuhui Ao

doi:10.1039/d0ra03197f

Fabrication of microcapsule-type composites with the capability of underwater self-healing and damage visualization

RSC Advances ◽

10.1039/d0ra03197f ◽

2020 ◽

Vol 10 (56) ◽

pp. 33675-33682

Author(s):

Hengyu Feng ◽

Fei Yu ◽

Yu Zhou ◽

Ming Li ◽

Linghan Xiao ◽

...

Keyword(s):

Epoxy Resin ◽

High Humidity ◽

Curing Agent ◽

Self Healing ◽

Damage Visualization

Self-healing materials that can be repaired in high humidity or underwater are rarely studied. By mixing fluorescent latent curing agent with epoxy resin microcapsules, the material can be repaired underwater and have the ability to show the location of damage.

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Preparation and characterization of self-healing microcapsules embedding waterborne epoxy resin and curing agent for asphalt materials

Construction and Building Materials ◽

10.1016/j.conbuildmat.2018.06.185 ◽

2018 ◽

Vol 183 ◽

pp. 384-394 ◽

Cited By ~ 7

Author(s):

Qi Liu ◽

Jiupeng Zhang ◽

Wolong Liu ◽

Fucheng Guo ◽

Jianzhong Pei ◽

...

Keyword(s):

Epoxy Resin ◽

Curing Agent ◽

Self Healing ◽

Asphalt Materials ◽

Waterborne Epoxy ◽

Waterborne Epoxy Resin

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Self-Healing of an Epoxy Resin Using Scandium(III) Triflate as a Catalytic Curing Agent

Advanced Functional Materials ◽

10.1002/adfm.201101660 ◽

2011 ◽

Vol 21 (24) ◽

pp. 4624-4631 ◽

Cited By ~ 85

Author(s):

Tim S. Coope ◽

Ulrich F. J. Mayer ◽

Duncan F. Wass ◽

Richard S. Trask ◽

Ian P. Bond

Keyword(s):

Epoxy Resin ◽

Curing Agent ◽

Self Healing

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Encapsulation of epoxy and amine curing agent in PAN nanofibers by coaxial electrospinning for self-healing purposes

RSC Advances ◽

10.1039/c6ra06434e ◽

2016 ◽

Vol 6 (74) ◽

pp. 70056-70063 ◽

Cited By ~ 54

Author(s):

Rasoul Esmaeely Neisiany ◽

Saied Nouri Khorasani ◽

Jeremy Kong Yoong Lee ◽

Seeram Ramakrishna

Keyword(s):

Epoxy Resin ◽

Coaxial Electrospinning ◽

Core Shell ◽

Curing Agent ◽

Self Healing ◽

Amine Curing Agent ◽

Amine Curing

Encapsulation of epoxy resin and amine based curing agent in core–shell nanofibres using coaxial electrospinning.

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Interfacial Binding Energy between Calcium-Silicate-Hydrates and Epoxy Resin: A Molecular Dynamics Study

Polymers ◽

10.3390/polym13111683 ◽

2021 ◽

Vol 13 (11) ◽

pp. 1683

Author(s):

Xianfeng Wang ◽

Wei Xie ◽

Jun Ren ◽

Jihua Zhu ◽

Long-Yuan Li ◽

...

Keyword(s):

Molecular Dynamics ◽

Binding Energy ◽

Epoxy Resin ◽

Chain Length ◽

Dynamics Simulation ◽

Cement Matrix ◽

Curing Agent ◽

Self Healing ◽

Calcium Silicate Hydrates ◽

Epoxy Curing

Microcapsules encapsulated within epoxy as a curing agent have been successfully applied in self-healing materials, in which the healing performance significantly depends on the binding behaviour of the epoxy curing agent with the cement matrix. In this paper, the binding energy was investigated by molecular dynamics simulation, which could overcome the shortcomings of traditional microscopic experimental methods. In addition to the construction of different molecular models of epoxy, curing agents, and dilutants, seven models were established to investigate the effects of chain length, curing agent, and epoxy resin chain direction on the interfacial binding energy. The results showed that an increase of chain length exhibited had limited effect on the binding energy, while the curing agent and the direction of the epoxy significantly affected the interfacial binding energy. Among different factors, the curing agent tetrethylenepentamine exhibited the highest value of interfacial binding energy by an increment of 31.03 kcal/mol, indicating a better binding ability of the microcapsule core and the cement matrix. This study provides a microscopic insight into the interface behaviour between the microcapsule core and the cement matrix.

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