Stowarzyszenie "Rowling" :: Przegląd tematu - magasin moncler Substrate using thermal curing pow

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Thermal substrate with UV curable powder coatings

Too fast curing temperature,magasin moncler, curing time base instructions from the system does not produce volatiles. Xiao Lei i7 World chopsticks a significant increase in demand = no solvent release,uggs bestellen, low investment and low energy consumption (due to use of quick-drying equipment and faster due to high productivity brought about by) the UV-curable coatings for applications in all industrial coatings become the fastest-Shan a coating, an annual growth rate of about l0%. 1994i ~ cold UV curing material consumption in Western Europe is about 44.000 tons, most of the varnish. Epoxy acrylate, urethane acrylate, polyester acrylate f is usually active low molecular weight acrylic release agent dilution ene), poly acrylic acid vinegar, unsaturated polyester with styrene or low viscosity c degree of dilution acrylate) and water-based system is widely used UV-curable liquid resin caused by free radical curing initiator. Commonly used free radical initiators are benzophenone and its derivatives, acetophenone derivatives,moncler pas cher, ketones and acryloyl sigh tons of phosphine oxide. However, UV-curable coating in the liquid during transport diluent monomers and oligomers,tory burch shoes, the release will stimulate the skin and eyes. Liquid substrate material into the paint inside and not cured long-term emissions in the atmosphere composition is a liquid UV-curable coatings has not been able to solve the problem. Powder Coatings (another successful coating system) as a high melt viscosity,moncler prix, making it difficult to penetrate inside the substrate. Meanwhile, the powder coating raw materials used are solid at room temperature without physiological harm, a construction can be achieved over 100ram thus reducing the powder coating thickness coating times, while saving space and energy consumption. Not long ago: powder coating heat sensitive substrates can not be used because the film forming curing powder coatings at high temperature will cause deformation of the substrate degassing. A new powder coating system has been very close to the success of the development phase, the coating system containing solid and solid-state unsaturated polyester urethane acrylate resin curing agent, can be heat sensitive substrate (such as MDF board and thermoplastics) surface the formation of UV-curable powder coating. The physical properties of materials used are as follows: unsaturated polyester of a glass transition temperature: a melting range of about 52 ℃: 75 ~ 90 ℃ melt viscosity: 200 ℃ time. ~ 96Pas an acid value: - ~ 925mgKOH / g polyurethane acrylic glass transition temperature: a melt viscosity of about 47 ℃: 120 ℃ 40 ~ 60Pas when the range of 65 ~ 85 ℃ melting the powder with the above-mentioned UV curable physical and chemical properties, so we can like ordinary powder (such as polyester or a mixture of three isocyanurate shrink Figure 1 UV-curable powder coating of the construction process: Using infrared light to medium wave infrared radiation: Ultraviolet radiation UV beam : problems: bubbles in the melting process ●, '_, a) Ang surface treatment and materials industry in 1996 to punish a few months / total 第三 eleven

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