Preparation and Evaluation of Coating Have One and Two Shells (Part 2) | ||
| Egyptian Journal of Chemistry | ||
| Article 10, Volume 62, Issue 5, May 2019, Pages 897-911 PDF (6.37 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2018.5289.1468 | ||
| Authors | ||
| Ahmed Ramadan1; Ahmed Amer* 2; Abdel aziz Gomaa3 | ||
| 1Helwan university-faculty of science | ||
| 2Helwan University- faculty of science | ||
| 3Pacchin company- former head of quality sector | ||
| Abstract | ||
| Micro-capsules are prepared with two basic forms, the 1st form is covered by one shell made of urea-formaldehyde, the 2nd one is covered by two shells (the first shell is urea-formaldehyde and the second shell made of poly-urethane). Both the first and the second forms of the Micro-capsules are filled by two types which are corrosion inhibitors (corr A and corr B). Some tests were applied and discussed like: optical scanning microscope was used to confirm the formation of capsules, microcapsules were weighed in order to measure the shrinking rate, thermal gravimetric analysis was applied to find the rate of stability under heating of the micro-capsules; Infra-red spectroscopy was applied to make sure of the formation of shells of the micro-capsules and physical properties were monitored weekly to confirm the stability of the micro-capsules (these tests were applied and discussed in paper part 1 which sent under the number : 1809-1467). In this paper the self-healing properties are focused on as: micro-capsules of the one and two shells were incorporated with epoxy paint (which used as a protective coating for severe environmental conditions). Micro-capsules showed promising corrosion protection via performing self-healing properties as it focused on adding different anti-corrosive materials into capsules of one and two shells which opens the door for new uses and additions. The research results would be important for self-healing and anti-corrosive materials industry. | ||
| Keywords | ||
| Micro-capsules – self-healing – one shell – two shells | ||
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