SOME INITIAL RESULTS OF THE STUDY AND PREPARATION OF WATERBORNE-ACRYLIC PAVEMENT MARKING PAINTS.

Abstract

            Pavement marking paints are widely used in transport sector for traffic guides. These paints primarily contain solvent-based alkyd or styrene acrylic. Solvent-based paints have low water miscibility and its drying mechanism is not very dependent on the air humidity. However, solvent-based alkyd markings have the limitation of bad daytime and nightime visibility, since alkyd oxidation over time leads to a more brittle film that does not maintain road or glass bead adhesion very well. Solvent-based acrylic markings do not perform better than the alkyd ones. Additionally, solvent-based paints have high content of volatile organic compounds and are hazardous to handle, transport and dispose.

To solve these problems, waterborne acrylic resins are replaced by solvent-based resins to manufacture the pavement marking paints in the world. Waterborne pavement marking paints have low drying-time, good adhesion with road, good glass bead adhesion and durability in gasoline, akali and salt environments. These paints have good retroreflection in daytime and nightime. Additional, these paints have low content of volatile organic compounds.

This article introduces some initial results of the study manufacturing of waterborne-acrylic pavement marking paint.