• Zafar, Muhammad Ahmad
• Ejaz, Shahneela
• Saeed, Usman
• Aleem, Waqas
• Amir, Muhammad
• Shahid, Arbab
• Durrani, Mansoor Shafiq
• Qamar, Sabih

Abstract

<jats:p>This research is focused on evaluation of kaolin (Calcined Aluminum Silicate) micro-based pigment or filler that can substitute titanium dioxide in waterborne paints. Calcined aluminum silicate has shown ability for partial replacement of titanium dioxide by fractionally and runnability. Titanium dioxide is very essential white pigment that has highest hiding power in waterborne coatings. But titanium dioxide is most expensive pigment. Our purpose was to find inexpensive pigment for replacement of titanium dioxide that does not affect properties of waterborne coatings but reduce cost of titanium dioxide in paint formulation. Fillers or calcined aluminum silicate has effect on properties of coatings like gloss, textures, viscosity, emulsion and tinting or coloring strength of paint. Our research main focus was that these properties of paint will not be affected by replacement of TiO2. To evaluate new pigment five samples are prepared in laboratory using high speed disperser. These samples were prepared at room temperature with same period of time in mixer. One sample is prepared as standard with no replacement of TiO2, other four sample were prepared with TiO2 replacement about 5%, 10%, 15% and 20% in coatings. Additives, binder and fillers were added according to paint basic formulation. Tests includes gloss, appearance, opacity, density, viscosity, smoothness, scrub resistance and whiteness or brightness. Results of these samples show that calcined aluminum silicate has potential to replace titanium dioxide in paint. The rheological, optical, mechanical and weathering properties were studied. Other properties like gloss, opacity, density, viscosity, brightness, scrub resistance, brushability, light fastness and reflectivity values were in range. In our study it is shown that titanium dioxide can be replaced from 5% to 20% in waterborne coatings without any effect on properties of paint. Replacement of titanium dioxide give better quality and economically favorable.</jats:p>

Topics

• density
• impedance spectroscopy
• aluminium
• strength
• viscosity
• texture
• titanium