Epoxy Thermoplastic Pavement Marking Material: Specification and Testing

摘要

This report presents the results of an extensive laboratory program to establish a specification for an epoxy thermoplastic (ETP) striping material which was developed in a contract research study for the Federal Highway Administration by Southwest Research Institute. The present study developed laboratory test procedures to evaluate the significant properties of the ETP material and its components. Properties studied included viscosity, reflectance, thermal stability, softening point, epoxy equivalent weight, and infrared spectrum. Also studied were the effects upon selected ETP properties of variations in the composition ratios of the ETP components and variations in the epoxy resin properties. From a statistical analysis of the results, upper and lower limits for the ETP physical properties were determined. An interim composition performance specification was then established for the procurement of this material based on epoxy resins manufactured by CIBA-GEIGY and various commercial pigments. Analytical procedures for determining titanium dioxide, lead chromate, glass bead, and organic contents were also incorporated into the specification.