Asphalt Rolling Thin Film Oven (RTFO) is a cheap and easy-to-use oven newly launched by our manufacturer. It is a product jointly developed by my country's asphalt leaders and has guaranteed.The working principle is that the heat and air influences to his film is evaluated by changes of the viscosity of the samples, penetration and ductility before and after the test, in which the asphalt film is heated in the 163 degree oven in certain time.
GD-0653: Emulsified Asphalt Particles Ionic Charge Tester GD-0654: Emulsified Asphalt Adhesion Tester GD-0655:Emulsified Asphalt Storage Stability Tester GD-0751:Emulsified Asphalt Consistency Tester GD-0752:Wet Wheel Abrasion Tester GD-0754 : Cohesive Force Tester GD-0755:Load Wheel Rolling Tester
Coulometric method is suitable for samples with low water content (10 μg ~ 100 mg)The volumetric method is suitable for samples with higher water content (0.1 to 500 mg).
The interfacial tension between oil and water reacts to the affinity between oil and water. If the tension is large, oil and water are not easily miscible (emulsified), and oil is easy to dehydrate during refining (an important indicator of insulating oil is that trace water PPM cannot exceed the st