WEST CONSHOHOCKEN, PA – ASTM International has introduced two new standards. The new standard, D7490, Test Method for Measurement of the Surface Tension of Solid Coatings, Substrates and Pigments Using Contact Angle Measurements, was developed by Subcommittee D01.23 on Physical Properties of Applied Paint Films, part of ASTM International Committee D01 on Paint and Related Coatings, Materials and Applications. D7490 will be used to determine the wettability of a given primer or substrate. It can also be used to explain why there are wetting problems or defects over a certain primer or substrate.
The new standard, ASTM D7233, Test Method for Testing Fracture of Level Paintbrush Filaments, was developed by Subcommittee D01.61 on Paint Application Tools. ASTM D7233, and the equipment detailed within it, will allow suppliers of hollow filaments for paintbrushes to better assess the tendency of the filaments to fracture.