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Development trend of powder coatings

Update:20-03-2020
Summary:

New and further developed powder enamel systems meet mo […]

New and further developed powder enamel systems meet more stringent requirements for corrosion protection, anti-graffiti, metallic effects, heat reflection, UV radiation and weather resistance, low temperature coatings, scratch or antibacterial properties. The innovative metal powder enamel not only makes the appearance of only one layer of coating similar to that of a liquid-coated surface, but also creates an effect that is visible from all angles. At the same time, powder enamel systems can be used on dull matte surfaces that are common in construction, as well as automotive, sports and furniture applications. They can also provide a high level of gloss stability at various baking temperatures and different substrate thicknesses.

The use of enamel powder is one of the most environmentally friendly and resource-saving processes in the field of industrial coating technology. As a result, powder coatings have established themselves in many industries in the past, ranging from construction, furniture manufacturing, home appliances and automotive industries to machinery and equipment manufacturing and consumer products. Due to the ever-increasing requirements for coating quality, material and energy consumption, personalization and productivity, coating workshops and companies with in-house spray coating operations are facing the challenge of optimizing the process. Digitalization and intelligent networking of processes are also becoming increasingly important.

Metal substrates (such as steel, galvanized steel, and aluminum) are cleaned by wet chemical processes with cleaning agents that match the materials and contaminants. Depending on the type of pollutants to be removed, precision cleaning can be performed using dry processes such as CO 2 snow spray cleaning and plasma and laser cleaning. In the pretreatment of metal substrates, the trend of nano-ceramic systems (compatible with multiple metals) is evolving. These alternatives to traditional iron and zinc phosphating methods have economic, ecological, and process engineering advantages. The corrosion protection that can be achieved is comparable to, or even exceeding, that provided by zinc phosphide.

Thanks to the ionizing organometallic substance, the antibacterial powder enamel can not only effectively and effectively resist bacteria, but also effectively resist viruses, fungi and algae. By using a low-temperature powder enamel system, the cross-linking time can be shortened, thereby saving energy and increasing yield. Depending on the formulation and application, these enamel powders are crosslinked at temperatures of 120 ° C (indoor applications) or 140 ° C (outdoor applications). Ultra-thin powder coatings significantly reduce consumption due to reduced layer thickness.

Powder powder solutions are meeting growing demand for energy efficiency and corrosion protection, as well as resistance to UV radiation and weather resistance (for example, components for construction and agricultural machinery, outdoor use and construction). They make coating possible without the need for energy-intensive intermediate crosslinking.

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