Formulation of Anti-Corrosive Alkyd Paints Based on Umuahia Clay Extender
|International Journal of Polymer and Textile Engineering|
|© 2020 by SSRG - IJPTE Journal|
|Volume 7 Issue 2|
|Year of Publication : 2020|
|Authors : Isaac O. Igwe, Florence N. Acha, Christian O. Anyaegbu, Glory I. Agwu, Victor C. Ifeacho, Wisdom C. Esinwoke, Gospel S. Asiegbu and Chinedu Nwapa.|
Isaac O. Igwe, Florence N. Acha, Christian O. Anyaegbu, Glory I. Agwu, Victor C. Ifeacho, Wisdom C. Esinwoke, Gospel S. Asiegbu and Chinedu Nwapa., "Formulation of Anti-Corrosive Alkyd Paints Based on Umuahia Clay Extender" SSRG International Journal of Polymer and Textile Engineering 7.2 (2020): 25-30.
Isaac O. Igwe, Florence N. Acha, Christian O. Anyaegbu, Glory I. Agwu, Victor C. Ifeacho, Wisdom C. Esinwoke, Gospel S. Asiegbu and Chinedu Nwapa., (2020). Formulation of Anti-Corrosive Alkyd Paints Based on Umuahia Clay Extender. SSRG International Journal of Polymer and Textile Engineering 7(2), 25-30.
Umuahia clay was used as an extender to formulate alkyd paints possessing anti-corrosive property on mild steel. The clay which was sieved to 0.075 mm particle size was used within extender contents, 0 to 80.0 wt.%. Titanium dioxide prepared alkyd paint served as the reference paint while xylene was used as the solvent. Determinations on the properties of clay gave the following results: pH (6.50), specific gravity (2.10), oil absorption (36.0 g/100 g), and refractive index (1.63). The clay was stable to heat and the chemical media studied, and composed largely of silica (60.90 wt.%), alumina (24.63 wt.%) and titanium dioxide (3.50 wt.%). Other metallic oxides are present in negligible amounts. The formulated paints exhibited satisfactory surface -, and throughdry times, and the paint sample containing 80 wt.% clay had the best through-dry time of 216 min. The film thickness of the paint dry films were within 0.10 to 0.15 mm, an indication that the films will form barriers resistant to weathering. The formulated paint samples had good impact strength and the dry paint film hardness was observed to increase with increasing clay content. The paint samples containing 60, and 80.0 wt.% clay had maximum pencil hardness of 5H. The adhesion of the paint dry films to mild steel surfaces was generally good, and adhesion losses were in the range, 3.0 to 25.0 %. The paint dry films exhibited no blistering or severe paint defects on immersion in 3% NaCl except for slight colour changes which are suggestive of anti-corrosive property of the paints. The performance of the dry paint films in deionized water, and 3% Na2CO3, was generally satisfactory unlike the performance in 3% H2SO4 where some paint defects occurred. The present study has highlighted the utility of Umuahia clay in formulating paints for the protection of mild steel in salty environments, the property which is attributed to the presence of inert oxides of silica, alumina, and titanium dioxide in the clay.
 R. E. Grim, “Applied Clay Mineralogy”, MacGraw-Hill, New York, 1968.
 B. Velde. “Composition and Mineralogy of Clay Minerals”. In: B. Velde (ed.), “Origin and Mineralogy of Clays”, Springer-Verlag, New York, pp. 8–42.
 K. Hideomi (2015) “Physical and Chemical Properties of Clay”, Encyclopedia Britannica. [online]. Available: www.britannica.com
 M. F. Brighatti, E. Galan and B. K. G. Theng. “Structures and Mineralogy of Clay Minerals”, In: F. Bergaya, B. K. G. Theng, and G. Legaly (eds). Handbook of Clay Science 5. Elsevier, Netherlands, pp. 19–86, 2006.
 J. P. Humphrey and D. E. Boyd. “Clay: Types, Properties, and Uses”, Nova Science Publishers, New York, 2011.
 H. H. Murray. “Overview: Clay Mineral Applications. Applied Clay Science”, vol. 5, no. 5–6, pp. 379–395, 1991.
 Clay Wikipedia, the Free Encyclopedia.
 M. Rahim, M. Prasad, S. Gandhi and R. Purwar. “Effects of Montmorillonite Clay on the Properties of PAN Filaments”. International Journal of Polymer and Textile Engineering, vol. 7, no. 2, pp. 7–13, 2020.
 PCI(Paint and Coating Industry) Magazine. (2005) “A Comprehensive Understanding of TiO2 Pigment Durability”. [online]. Available: http://www.pci-mag.com/articles/82840 on 02/11/2014.
 W. M. Morgans, “Outlines of Paint Technology”, Edward Arnold, London, 1990.
 Z. Gerhard, “China Clay in Paints, Coatings and Printings Inks”, Chemical Technology, vol. 6, no. 1- 4, 2007.
 T. O. Odozi, R. Dore and C. O. Onu, “Paint Extenders Based Upon an Indigenous Clay”, Journal of Nigerian Society of Chemical Engineering, vol. 5, no. 34-40, 1986.
 Imerys. (2017) “Saving TiO2 in Alkyd Gloss Paints with PolsperseTM10”, Imerys Performance Minerals. [online]. Available: www.imerys-performance.com
 N. M. Ahmed, “Comparative Study on the Role of Kaolin, Calcined Kaolin and Chemically Treated Kaolin in Alkyd- Based Paints for Protection of Steel”, Pigment and Resin Technology, vol. 42, no. 1, pp. 3-14, 2013.
 R. Nayaran and K. V. S. N. Raju, “The Use of Calcined Clay as Part Replacement of Titanium Dioxide in Latex Paint Formulations”, Journal of Applied Polymer Science, vol. 77, no. 5, pp. 1029-1036, 2000.
 N. M. Ahmed and M. M. Selim, “Tailored Ferrites-Kaolin Anticorrosive Hybrid Pigments in Solvent - Based Paints for the Protection of Cold-Rolled Steel”, Pigment and Resin Technology, vol. 39, no. 2, pp. 101-111, 2010.
 K. C. Anyiam, and I. O. Igwe, “Studies on an Industrial Waste Clay in Alkyd Paint Formulations”, International Journal of Academic Research, vol. 4, pp. 48-53, 2012.
 I. O. Igwe, and L. U. Ezeamaku, “The Use of Local Clays in Alkyd Paint Formulations”, Malaysian Polymer Journals, vol 5, pp. 81-94, 2010.
 C. M. Ewulonu, I. O. Igwe, and G. N. Onyeogoro, “Performance of Local Clays-Titanuim Dioxide Core-Shell Extender Pigments in Alkyd Paints”, Advances in Nanoparticles, vol. 5, pp. 90-102, 2016.
 I. O. Igwe, G. Osuoha and C. Nwapa, “Characterization and Utilization of Eziulo Clay as an Extender in Emulsion Paint Formulations”, Journal of Minerals and Materials Characterization and Engineering, vol 5, pp. 174 – 184, 2017.
 S. A. Oluwafemi, “Documentation, Application, and Utilization of Clay Minerals in Kaduna State (Nigeria)”, IntechOpen. 2012 doi: 10 : 5772/48093.
 S. Tiwari, and M. Saxena, “Use of Fly Ash in High Performance Industrial Coatings”, British Corrosion Journal, vol. 34, pp. 184–191, 1999.
 J. Boxall, and J. A. Von - Fraunhofer, “Concise Paint Technology”, Chemical Publishing, New York, 1986.
 K. L. Nelson, “Enhanced Performance and Functionality of Titanium Dioxide Papermaking Pigments with Controlled Morphology and Surface Coating”, Georgia Institute of Technology, ProQuest, 2007.
 V. N. Osabor, P. C. Okafor, K. A. Ibe, and A. A. Ayi, “Characterization of Clays in Odukpani, South Eastern Nigeria”, African Journal of Pure and Applied Chemistry, vol. 3, no. 5, pp. 79-85, 2009.
 A. Raheem, O. A. and Olowu, “Production of Household Paint Using Clay Materials”, International Journal of Engineering Research and Applications, vol. 3, no. 2, pp. 85-93, 2013.
 R. M. Laine, K.Y. Blohowiak, T. R. Robinson, M. L. Hope, P. Nardi, J. Kampf and J. Uhm, “Pentacoordinate Silicon Complex from SiO2”, Journal of Materials Science and Engineering, vol. 353, pp. 642 – 644, 1991.
 “Standard for Paints and Varnishes Part 3”, Nigerian Industrial Standard(NIS), Lagos, 1989.
Alkyd Paints, Umuahia Clay, Extender, Titanium Dioxide, Particle Size.