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Wednesday, 18 September 2019
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Raw materials & technologies, Technologies, Functional coatings

Self-healing ability and adhesion strength of capsule embedded coatings studied

Wednesday, 12 September 2012

Researchers from Petroleum University of Technology, Iran encapsulated linseed oil with a polyureaformaldethde (PUF) shell and created self-healing ability in an epoxy coatings by capsuse embedment.

Self-healing coatings could improve corrosion protection

Self-healing coatings could improve corrosion protection

Urea–formaldehyde (UF) capsules were synthesized in micro and nano sizes, containing linseed oil (LO).The micro- and nanocapsules were incorporated through epoxy coatings and the coatings were applied on C-steel panels. Then the self-healing performance of the coatings was investigated. The corrosion resistance, adhesion strength and its retaining after immersion of nanocapsule incorporated coatings were compared with the optimum microcapsule incorporated ones. The complete study will be published in Progress in Organic Coatings, Volume 75, Issue 4, December 2012, pages 292-300.

Study highlights

Linseed oil was encapsulated with a polyureaformaldehyde (PUF) shell.

Self-healing ability was created in an epoxy coating by capsule embedment.

The self-healing ability was a function of capsule concentration in the coating.

The capsule incorporation caused adhesion strength reduction.

The nano scale capsules showed higher self-healing performance compared with micro.

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