Self-healing of a high temperature cured epoxy using poly(dimethylsiloxane) chemistry

C. L. Mangun; A. C. Mader; N. R. Sottos; S. R. White

doi:10.1016/j.polymer.2010.06.050

Self-healing of a high temperature cured epoxy using poly(dimethylsiloxane) chemistry

C. L. Mangun, A. C. Mader, N. R. Sottos, S. R. White

Research output: Contribution to journal › Article › peer-review

Abstract

A high temperature cured self-healing epoxy is demonstrated by incorporating microcapsules of poly(dimethylsiloxane) (PDMS) resin and separate microcapsules containing an organotin catalyst. Healing is triggered by crack propagation through the embedded microcapsules in the epoxy matrix, which releases the healing agents into the crack plane initiating crosslinking reactions. A series of tapered double-cantilever beam (TDCB) fracture tests were conducted to measure virgin and healed fracture toughness. Healing efficiencies, based on fracture toughness recovery, ranged from 11 to 51% depending on the molecular weight of PDMS resin, quantity of healing agent delivered, and use of adhesion promoters.

Original language	English (US)
Pages (from-to)	4063-4068
Number of pages	6
Journal	Polymer
Volume	51
Issue number	18
DOIs	https://doi.org/10.1016/j.polymer.2010.06.050
State	Published - Aug 2010

Keywords

Autonomic materials
Microcapsules
Self-healing

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics

Online availability

10.1016/j.polymer.2010.06.050

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title = "Self-healing of a high temperature cured epoxy using poly(dimethylsiloxane) chemistry",

abstract = "A high temperature cured self-healing epoxy is demonstrated by incorporating microcapsules of poly(dimethylsiloxane) (PDMS) resin and separate microcapsules containing an organotin catalyst. Healing is triggered by crack propagation through the embedded microcapsules in the epoxy matrix, which releases the healing agents into the crack plane initiating crosslinking reactions. A series of tapered double-cantilever beam (TDCB) fracture tests were conducted to measure virgin and healed fracture toughness. Healing efficiencies, based on fracture toughness recovery, ranged from 11 to 51% depending on the molecular weight of PDMS resin, quantity of healing agent delivered, and use of adhesion promoters.",

keywords = "Autonomic materials, Microcapsules, Self-healing",

author = "Mangun, {C. L.} and Mader, {A. C.} and Sottos, {N. R.} and White, {S. R.}",

note = "Funding Information: The authors would like to acknowledge funding provided by the Air Force Office of Scientific Research (Contract # FA9550-08-C-0037 ) and thank our Program Manager, Dr. Les Lee. In addition, the authors would like to thank members of the Autonomous Materials Systems group at the University of Illinois, Mary Caruso, Brett Beiermann, Jericho Moll, Benjamin Blaiszik, David McIlroy, Stuart Schelkopf and Gerald Wilson. Finally, thanks to Gelest for discussions on appropriate adhesion promoters, Todd Kamyszek at Wacker Chemical Corporation for his insights on the PDMS system, and Nigel Barksby and Paul Hoffman at Bayer MaterialsScience for discussions on improved urethane prepolymers and providing samples.",

year = "2010",

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doi = "10.1016/j.polymer.2010.06.050",

language = "English (US)",

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AU - Mangun, C. L.

AU - Mader, A. C.

AU - Sottos, N. R.

AU - White, S. R.

N1 - Funding Information: The authors would like to acknowledge funding provided by the Air Force Office of Scientific Research (Contract # FA9550-08-C-0037 ) and thank our Program Manager, Dr. Les Lee. In addition, the authors would like to thank members of the Autonomous Materials Systems group at the University of Illinois, Mary Caruso, Brett Beiermann, Jericho Moll, Benjamin Blaiszik, David McIlroy, Stuart Schelkopf and Gerald Wilson. Finally, thanks to Gelest for discussions on appropriate adhesion promoters, Todd Kamyszek at Wacker Chemical Corporation for his insights on the PDMS system, and Nigel Barksby and Paul Hoffman at Bayer MaterialsScience for discussions on improved urethane prepolymers and providing samples.

PY - 2010/8

Y1 - 2010/8

N2 - A high temperature cured self-healing epoxy is demonstrated by incorporating microcapsules of poly(dimethylsiloxane) (PDMS) resin and separate microcapsules containing an organotin catalyst. Healing is triggered by crack propagation through the embedded microcapsules in the epoxy matrix, which releases the healing agents into the crack plane initiating crosslinking reactions. A series of tapered double-cantilever beam (TDCB) fracture tests were conducted to measure virgin and healed fracture toughness. Healing efficiencies, based on fracture toughness recovery, ranged from 11 to 51% depending on the molecular weight of PDMS resin, quantity of healing agent delivered, and use of adhesion promoters.

AB - A high temperature cured self-healing epoxy is demonstrated by incorporating microcapsules of poly(dimethylsiloxane) (PDMS) resin and separate microcapsules containing an organotin catalyst. Healing is triggered by crack propagation through the embedded microcapsules in the epoxy matrix, which releases the healing agents into the crack plane initiating crosslinking reactions. A series of tapered double-cantilever beam (TDCB) fracture tests were conducted to measure virgin and healed fracture toughness. Healing efficiencies, based on fracture toughness recovery, ranged from 11 to 51% depending on the molecular weight of PDMS resin, quantity of healing agent delivered, and use of adhesion promoters.

KW - Autonomic materials

KW - Microcapsules

KW - Self-healing

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Self-healing of a high temperature cured epoxy using poly(dimethylsiloxane) chemistry

Abstract

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