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UV curing is the use of ultraviolet light energy
Release time:
2024-01-12
UV curing is to use the energy of ultraviolet light to initiate the polymerization and crosslinking reaction between the low molecular prepolymer or oligomer in the coating and the monomer molecule as the reactive diluent to obtain the hardened paint film, which is essentially chemical drying by forming chemical bonds.
UV curing is to use the energy of ultraviolet light to initiate the polymerization and crosslinking reaction between the low molecular prepolymer or oligomer in the coating and the monomer molecule as the reactive diluent to obtain the hardened paint film, which is essentially chemical drying by forming chemical bonds.
UV curable powder coating is a new coating technology combining powder coating technology and UV curing technology, which combines the advantages of traditional powder coating and liquid UV curable coating technology, and to some extent overcomes the shortcomings of the two types of coatings. Traditional heat-curing powder coatings require curing at 80 -- 200 ℃ for l5 -- 30min, which limits the application of this technology in heat-sensitive substrates. The rapid development of UV-curable powder coatings with a melting point of 1OO ~ 120°C solves this problem.
Compared with the traditional thermal curing powder coating, UV curing powder coating melt leveling and curing are two independent processes, the first powder particles by infrared radiation heating melt leveling, and then UV radiation curing, which can get a smooth coating. Due to the low melting temperature of UV curable powder coatings, it can be used for coating heat-sensitive substrates (such as paper, rubber, plastic), etc., which greatly expands the application space of powder coatings.
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