Formulation of chlorinated rubber-based traffic marking paint and evaluation of Nano-TiO2/AMRS composite for its photocatalytic self cleaning property

Abstract

Traffic Marking Is One Of The Road Safety Features That Reduce Traffic Accidents By Providing Guidance And Information For Road Users. However, During Service Time, Pollutants Suspended In The Atmosphere Deposit On Its Surface And Cause Its Visibility To Decline. The Aim Of This Work Was To Formulate Traffic Marking Paint Using Chlorinated Rubber And Other Essential Basic ComponentsWith A Modified Property Towards A Self-Cleaning Ability. In This Research Work, Toluene And Benzene Were Used As A Solvent And Tested With Different Blending Ratios To Have The Better Dissolution Of The Binder Targeting A Minimum Solvent Cost. A Method Of Mixture Design Was Followed To Formulate The Traffic Marking Paint And Optimize The Required Viscosity Taking Commercial Paints As A Benchmark. Different End-User PropertiesIncluding, Density, Film Thickness, Adhesion, Hardness, Non-Volatile Matter Content, Water, And Thermal Resistance Were Evaluated Using Astm And Iso Standard Test Methods For The Selected Four Different Optimal Traffic Marking Paint Formulations.Nano-Tio2/ Awash Melkasa Residue Silica Composite Was Prepared And Characterized Using Tga, Xrd, Sem-Edx, And Ft-Ir. Finally, The Optimized Traffic Paint Was Modified Using The Composite To Investigate Its Self-Cleaning Property.Solvent Blending Ratio Of Benzene To Toluene At 35/65 % Was Observed To Dissolve The Chlorinated Rubber Without Phase Separation With A Relatively Low Cost Compared To Other Mixtures. The Cost Can Be Reduced By 2.08$/Lit As Compared To The Cost Of 100% Toluene Use. The Obtained Viscosity Of The Formulated Traffic Paints Was Observed To Vary From 53-114.45 Ku. The Viscosity Of The Most Common Commercially Available Traffic Marking Paint Ranges From 80-95 Ku. Out Of A Total Of 24 Different Formulations, Only Four Formulations Were Found To Have A Viscosity Ranging In Between The Commercial-Grade Traffic Paint Viscosity. Based On The Result Of End-User Property, The Optimized Paint Formulation Is Found To Have A Density Of 1.311 G/Ml, A Film Thickness Of 466.66 ??M, Zero Detachment Adhesion, 3h Pencil Hardness, And 62.6 % Of Non-Volatile Matter. Blistering Effect Was Observed After 8 Days Of The Water-Resistance Test. However, No Significant Change Was Observed During The Pencil Hardness XiiAnd Adhesion Test. Moreover, The Optimized Traffic Paint Showed High Thermal Stability That Can Withstand A Temperature Up To 100 Oc Without Any Deformation And Crack. The Characterization Results Of Nano-Tio2/ Awash Melkasa Residue Silica Composite Clearly ShowThat The Presence Of Anatase Phase Titanium With An Average Grain Size Of 13 Nm. Finally, The Optimized Traffic Paint Was Modified Using The Composite By Substituting Initially Presented Pigment (Micro Anatase Tio2) By The Same Amount Of Composite. A Better Photocatalytic Degradation Of Methyl Blue Stain With A Contact Angle Less Than 90o Was Observed After The Addition Of The Composite. With This, It Can Be Concluded That The Modified Traffic Paint Has A SignificantSelf-Cleaning Property.