Preparation and Application of Clearcoat with High Durability for Automotive Refnish
The problem of insufficient durability of clearcoat for automotive refinish and its solution were introduced.In the composition of high durability clearcoat,a fluorine modified hydroxy acrylic resin as the main resin was selected,which was synthesized from perfluoroalkyl ethyl methacrylate as the functional monomer,in addition,appropriate amount 3F FEVE fluorocarbon resin and organosilicone modified hydroxy acrylic resin were selected as auxiliary components,and some additives such as T-12 and triazine UV absorber(light stabilizer)were selected.Mixing optimal clearcoat and HDI hardener to form a film which was sutable for the conventional repair requirement and showed excellent performance.Excellent weather resistance and long-lasting scratch resistance enabled the clearcoat film to show a longer service life,and the clearcaot had broad application prospects in the automotive repair industry,especially for the automotives in regions with strong sunlight and ultraviolet radiation.
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