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Titanium Dioxide (TiO2) the most important and widely used in the coatings industry
Titanium Dioxide (TiO2) is the most important and widely used white pigment in the powder paint and coatings industry. Its combination of optical and physical properties make this pigment suitable to bring needed performances for a wide range of different coating applications. Incorporated correctly , this pigment helps to tune up the formulation to obtain many properties such as superior gloss, brightness, tint strengh, ease of dispersion, durability, hiding power and batch to batch uniformity. TiO2 is used to opacify paintRead More …
How to control the quality of matting agents dispersion in powder coating or paint
When we use fillers as matting agents in powder paint or coatings it is advisable to measure Grindometer or Hegmann value in order to receive information about the dispersing degree. Second, we can control the gloss degree at an angle of 60°. For the other above mentioned product groups the main parameter should be the control of gloss behavior. However, in order to get an extensive understanding about the matt degree of the paint it is necessary to take measurements atRead More …
Matting addtitives for powder coating or paint
Related Article: Powder Coating Raw Material All the matting additives which are used in the powder coatings or paint field, have their benefits and advantages. Waxes Today, there is a diverse range of waxes on the market. The most used waxes for coatings and inks are based on Polyethylene, Polypropylene, Carnauba, Amid. Waxes products based on Polytetrafluorethylene PTFE are also used as matting agents. In contrast to silicas, waxes modify the surface properties of a paint film by floating toRead More …
Chemical resistance for zero-VOC water-based epoxy topcoat
The new zero-VOC water-based epoxy topcoat has excellent resistance to a wide variety of industrial and household chemicals. Results of chemical resistance spot tests run in accordance with ASTM D 1308 (Table 1) shows the zero-VOC epoxy topcoat resists acids, bases, industrial solvents such as ketones, alcohols, glycol ethers, and aliphatic and aromatic hydrocarbons and various other chemicals such as bleach, motor oil and brake fluid. Reagent Concrete 10% Hydrochloric acid Good 10% Nitric acid Good 10% Phosphoric acid GoodRead More …
Binder System for Water-based epoxy
Water-based epoxies used in conventional protective coating formulations are based on two principal technologies, i.e., liquid epoxy self-emulsifying systems and solid epoxy dispersion systems.With epoxy equivalent weight ranging from 175 to 240,liquid epoxy self-emulsifying systems are very rich in epoxide groups. The combination of concentrated epoxides and amine hydrogens in the same emulsion particle provides coatings with high crosslink density and good chemical and abrasion resistance, but very short usable pot life, low flexibility and low impact resistance. These filmsRead More …
A zero-VOC water-based epoxy topcoat has been formulated
Since 1982, when the first bisphenol A-based solid epoxy dispersion and modified amine system came to market as an adduct suitable for metal protection, water-based epoxy systems have been used for high-performance industrial primers and topcoats over metal due to their fast dry time, corrosion resistance, good pot life and low odor. Although water-based epoxy has successfully replaced traditional solvent-based epoxy/polyamide coatings in many high-performance industrial applications, the VOC content of these water-based epoxies is typically 200-350 g/L. So now,Read More …
Powder coating finish continues to gain further acceptance
As the powder coating finish continued to gain further acceptance, other issues involving coatings were coming to light in Europe. These issues would affect the way the industry, as a whole, would progress through the 1970s and into the present. The highly industrialized nations of Western Europe,with population densities of more than 1,000 people per square mile, were fighting ever-increasing air and water pollution hazards. The paint and coatings industries of these countries feared legislation similar to the “Los AngelesRead More …
The dominant overall finishing trend will continue to be replacement of liquid finishing with powder coating for environmental impact reasons
Powder coatings today The dominant overall finishing trend will continue to be replacement of liquid finishing with powder coating for environmental impact reasons. Improvements in both coating and application technology will promote much broader powder use. The technology improvements are driven by needs primarily in the automotive, appliance and general industrial markets. The improvements encompass raw material, coating manufacturing and application sophistication changes. The automotive industry continues to expand powder coating from under-hood, trim and wheels to body applications. ImprovementsRead More …
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 …
D5 Creation