Friday, July 6th, 2012

now browsing by day

 

All coatings products sold in China are required to meet the Compulsory Coatings Standards

After years of continuous effort, there are more than 400 coatings and related standards in China, including national and industrial standards, which form a complete standard system. Of these standards, 58% are general, basic and method standards, and 39% are product standards. The compulsory coatings standards in China come from technical committees (SAC/TC) and administrative departments, and can be classified into national standards (labeled as GB) and industrial standards (labeled as JC, abbreviation of the building materials industry). If thereRead More …

Some Common Glossary used in the powder coating industry

Salt Spray Test – Corrosion test using salt (NaCl) sprayed as a mist in a heated humidity chamber to simulate seashore conditions, or to accelerate corrosion at a controlled rate. ASTM B117. Sandblast – Blast cleaning using sand as an abrasive. Scale – Rust occurring in thin layers–commonly found on hot rolled steel. Sealed Coating – Primer. Coating used for the prevention of excessive absorption of a first coat of paint by the substrate. Seeding – Formation of small agglomeratesRead More …

Physical and chemical properties test for powder coating films

Films ( Powder Coatings ) Physical Test Primary Test Equipment Characteristics Procedure (s)   Film Thickness ASTM D 1186 Magnetic Film Thick Gauge,   ASTM D1400 Eddy Current Induce Gauge Impact ASTM D2794 Impact Tester Flexibility ASTM D522 Conical or Cylindrical Mandrel Adhesion ASTM 2197 Balanced-Beam Scrape-Adhesion,   ASTM D3359 Cross Hatch Cutting Device and Tape Hardness ASTM D3363 Calibrated Drawing Leads or Pencils Abrasion Resistance ASTM D4060 Taber Abrader and Abrasive Wheels   ASTM D968   Edge Coverage ASTMRead More …