Automotive (Car Paint): From Local Raw Material Castor Seed Oil (Ricinius Communis), As Plasticizer

摘要

Drying oils have found applications in almost all decorative, communication and surface coatings. Castor seed oil had been assessed as a plasticizer and film former in automotive paint making. The moisture content of the seed meal was low, therefore, good quality for glossy auto-paint. Soxhlet extraction method was used to extract the oil at 315 0 C, while simple distillation method was used to separate the solvent from the pure oil. The viscosity, refractive index, specific gravity were 0.425 at 26 0 C, 1.471, 2.00 g/cm 3 , respectively, and are within range for automotive paint application. The mill charge, stabilization and let-down, processes, were carried out within the laboratory conditions. Different colours of paint were prepared from the original formulation by substituting the base pigment with another as desired. The opacity, viscosity, wash-ability, flexibility, compatibility and other quality control tests carried out on the castor oil plasticized auto-paint, compared very well to the Berger auto-fine car paint standard