Simple tool to compare water beading
Monday, 4 July 2011
A proposed new ASTM International standard that will provide a visual rating guideline on the degree of water beading can be used without the need for precise imaging equipment.
A proposed new ASTM International standard will provide a visual rating guideline on the degree of water beading Source: ccarina - Fotolia.com
Water beading is an aesthetic effect sometimes highlighted as a product feature by architectural coatings manufacturers who produce water-repellent wood finishes and deck stains. While water beading on a coated surface can be quantified through the use of a microscopic imaging system (ASTM D7334, Practice for Surface Wettability of Coatings, Substrates and Pigments by Advancing Contact Angle Measurement), it is not always crucial to evaluate bead formation with this level of precision. A proposed new ASTM International standard that will provide a visual rating guideline on the degree of water beading can be used without the need for precise imaging equipment. ASTM WK32143, Test Method for Visual Assessment of Water Beading on Horizontal Coatings, is being developed by Subcommittee D01.42 on Architectural Coatings, part of ASTM Committee D01 on Paint and Related Coatings, Materials and Applications.
Post comment
You are not logged in
register