Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg)
The ability to self-heal is an important feature for the long-term durability of protective coatings on metal alloys. Microcapsules in the self-healing coating allowed for automatic recovery of any damages or cracks, extending the life of the coating. In this study, self-healing microcapsules contai...
| Main Authors: | , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IOP Publishing
2021
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/33625/ http://umpir.ump.edu.my/id/eprint/33625/1/Self%20healing%20epoxy%20coating%20with%20microencapsulation_FULL.pdf |
| _version_ | 1848824302744371200 |
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| author | Juliawati, Alias N. A., Johari A., Zanurin Nasrul Azuan, Alang M. Z. M., Zain |
| author_facet | Juliawati, Alias N. A., Johari A., Zanurin Nasrul Azuan, Alang M. Z. M., Zain |
| author_sort | Juliawati, Alias |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The ability to self-heal is an important feature for the long-term durability of protective coatings on metal alloys. Microcapsules in the self-healing coating allowed for automatic recovery of any damages or cracks, extending the life of the coating. In this study, self-healing microcapsules containing linseed oil as the core material and polyurea-formaldehyde (PUF) as the shell material were manufactured to epoxy resin matrix. Coatings were applied to a bare magnesium (Mg) substrate and scratched to test the self-healing ability. Optical and scanning electron microscopy (SEM) were used to characterize the microcapsules formed by varied stirring rates of 300 and 800 rpm. By using potentiodynamic polarization in a 3.5 wt.% NaCl solution, the corrosion rate of embedded microcapsules and coatings on Mg was evaluated, and the corrosion rate was studied using the Tafel plot. As a consequence, the epoxy coating containing linseed oil and urea formaldehyde, stirred at 800 rpm, significantly resists corrosion attack on the magnesium sheet, with decreased corrosion current density, icorr (1.552 μA/cm2) as compared to the bare magnesium sheet (109.8 μA/cm2). During the microcapsule preparation, increasing the stirring rate from 300 to 800 rpm reduces the icorr value by roughly half. As a result, the self-healing coatings demonstrated adequate self-healing and corrosion resistance recovery on magnesium alloys. |
| first_indexed | 2025-11-15T03:10:53Z |
| format | Conference or Workshop Item |
| id | ump-33625 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:10:53Z |
| publishDate | 2021 |
| publisher | IOP Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-336252024-07-19T07:57:44Z http://umpir.ump.edu.my/id/eprint/33625/ Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) Juliawati, Alias N. A., Johari A., Zanurin Nasrul Azuan, Alang M. Z. M., Zain TJ Mechanical engineering and machinery The ability to self-heal is an important feature for the long-term durability of protective coatings on metal alloys. Microcapsules in the self-healing coating allowed for automatic recovery of any damages or cracks, extending the life of the coating. In this study, self-healing microcapsules containing linseed oil as the core material and polyurea-formaldehyde (PUF) as the shell material were manufactured to epoxy resin matrix. Coatings were applied to a bare magnesium (Mg) substrate and scratched to test the self-healing ability. Optical and scanning electron microscopy (SEM) were used to characterize the microcapsules formed by varied stirring rates of 300 and 800 rpm. By using potentiodynamic polarization in a 3.5 wt.% NaCl solution, the corrosion rate of embedded microcapsules and coatings on Mg was evaluated, and the corrosion rate was studied using the Tafel plot. As a consequence, the epoxy coating containing linseed oil and urea formaldehyde, stirred at 800 rpm, significantly resists corrosion attack on the magnesium sheet, with decreased corrosion current density, icorr (1.552 μA/cm2) as compared to the bare magnesium sheet (109.8 μA/cm2). During the microcapsule preparation, increasing the stirring rate from 300 to 800 rpm reduces the icorr value by roughly half. As a result, the self-healing coatings demonstrated adequate self-healing and corrosion resistance recovery on magnesium alloys. IOP Publishing 2021 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/33625/1/Self%20healing%20epoxy%20coating%20with%20microencapsulation_FULL.pdf Juliawati, Alias and N. A., Johari and A., Zanurin and Nasrul Azuan, Alang and M. Z. M., Zain (2021) Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg). In: Journal of Physics: Conference Series. Journal of Physics: Conference Series; 1st International Conference on Material Processing and Technology, ICMProTech 2021 , 14 - 15 July 2021 , Perlis, Virtual. pp. 1-9., 2129 (0120081st). ISBN 1742-6588 (Published) https://doi.org/10.1088/1742-6596/2129/1/012008 |
| spellingShingle | TJ Mechanical engineering and machinery Juliawati, Alias N. A., Johari A., Zanurin Nasrul Azuan, Alang M. Z. M., Zain Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) |
| title | Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) |
| title_full | Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) |
| title_fullStr | Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) |
| title_full_unstemmed | Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) |
| title_short | Self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of Magnesium (Mg) |
| title_sort | self-healing epoxy coating with microencapsulation of linseed oil for the corrosion protection of magnesium (mg) |
| topic | TJ Mechanical engineering and machinery |
| url | http://umpir.ump.edu.my/id/eprint/33625/ http://umpir.ump.edu.my/id/eprint/33625/ http://umpir.ump.edu.my/id/eprint/33625/1/Self%20healing%20epoxy%20coating%20with%20microencapsulation_FULL.pdf |