Effect Of Nanofiller (Pristine Montmorillonite And Hydrotalcite Lamellar Clays) Of Corrosion Activities On Paint

Yean , Fook Cheng (2009) Effect Of Nanofiller (Pristine Montmorillonite And Hydrotalcite Lamellar Clays) Of Corrosion Activities On Paint. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

compared to pristine epoxy paint. In this study, pristine montmorillonite and hydrotalcite lamellar is chosen as the nanofiller additives. The specimen is prepared by mixing of resin, curing agent, and nanofillcr in ratio of 10 to one in term of weight. The shape of pellet fonn specimen is obtained by pouring the mixture into PVC pipe and left for curing for three (3) days w1der room temperature. The prepared samples are studied by using Tafel extrapolation plot under different solution (3.5 wt% ofNaCl, 2 wt% HCI and 2 wt% NaOH) that provided different concentration of pi I. Morphology studies are conducted by using Scanning Electron Microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDX) under various magnifications. Result of study after calculation of conosion penetration rate shows that the corrosion rate of epoxy - montmorillorutc paint is lower than pristine epoxy paint. This shows that the additives of montmori.llonite nanofiller will enhance the corrosion resistivity and service lifetime of paint. As for epoxy - hydrotalcite paint, the corrosion penetration rate shows a growing trend but this had been explained by the properties of hydrota]cjte ion exchangeability to release of ions when contact with aggressive ions and suppress the attack of aggressive ions. EDX scanning indicates the participation of elements and proves the in-participation of foreign particles. The molecular vacancy observed in epoxy - hydrotalcite paint SEM micrograph after various testing conditions had been stated as no further references can be found.

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