Different types of titanium dioxide in different type powder coating
Entering the details of the competition in the powder coating industry, paint coatings are included in the investigation link. Polyester epoxy powder coatings improve the quality of the workmanship, and high titanium dioxides is important because we recognize that titanium dioxide dipolyester has become part of the quality of epoxy powder coating products.
Polyester epoxy powder coating has become one of the most important products among many powder coating products due to its excellent performance. It is composed of polyester resin, epoxy resin, filler and auxiliary. According to the epoxy resin industry expert association, polyester-epoxy powder coating pigments include a variety of titanium dioxides, chrome yellow, iron green, iron oxide red, iron oxide yellow, fast yellow G, phthalocyanine green, phthalocyanine blue BGS , BBN red, red, permanent red F3RK, permanent red F5RK and other carbon black varieties. The white powder is a commonly used white pigment in white polyester epoxy powder coatings. According to the commonly used white polyester epoxy powder coating formula, it is suitable for different types of titanium dioxide, A0101, R940, R902, R244, R930, R706.
By comparison test, different types of titanium dioxides polyester epoxy powder coatings can be found. Different types of titanium dioxides, due to different manufacturing processes, crystal forms and surface treatment methods, their chemical composition and properties have a significant impact on the chemical reactivity and dispersibility of polyester-epoxy powder coatings, and the gel time of powder coatings. , and the level of melt fluidity also affects the fluidity, gloss, color and impact resistance of the coating. The data show that the powder coating prepared by anatase titanium dioxide (A0101) has higher activity than the powder coating prepared by rutile type (R type) titanium dioxide, with short gel time, good melt fluidity, poor coating formation and low gloss. There are also significant differences in the technical indicators between rutile titanium dioxide.
According to the performance requirements of powder coatings, it is very important to meet the coating performance requirements of various powder coatings and titanium dioxides. Studies have shown that matte polyester epoxy powder coatings, anatase titanium dioxide and rutile titanium dioxide make the paint more prone to discoloration or yellowing, so this coating system is the best use of rutile titanium dioxide.