Coating knowledge: how to solve the adhesion problem of UV curable coating

Core tip: it is understood that compared with traditional coatings, UV curable coatings do not contain any organic solvent or inert diluent, do not need to be heated during curing, and have the characteristics of less environmental pollution, low energy consumption, high efficiency, good chemical stability and applicability It is a high-efficiency, energy-saving and environmental protection modern coating, which has been widely used in various fields With the development and application of various photosensitive coatings, one of the keys to the formulation design of UV curable coatings is how to improve the adhesion between UV curable coatings and various substrates, because good adhesion is the premise of obtaining good processing performance, medium resistance performance and outdoor weather resistance So how to improve the adhesion of coatings Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Home of coatings: it is understood that compared with traditional coatings, UV curable coatings do not contain any organic solvent or inert diluent, and do not need to be heated during curing It has the characteristics of less environmental pollution, low energy consumption, high efficiency, good chemical stability, and good applicability It is a modern coating with high efficiency, energy saving and environmental protection, which has been widely used in various fields With the development and application of various photosensitive coatings, one of the keys to the formulation design of UV curable coatings is how to improve the adhesion between UV curable coatings and various substrates, because good adhesion is the premise of obtaining good processing performance, medium resistance performance and outdoor weather resistance So how to improve the properties of the coating by improving the adhesion of the coating is a problem that we all pay attention to In general, the adhesion of the powder coating is improved by adding various adhesion promoters Good adhesion and comprehensive properties can be obtained by selecting appropriate adhesion promoter to enhance the effective contact between the film and the substrate, and using adhesion promoter with active functional group to form strong chemical bond with the substrate surface Because the accelerant obtained in this study is a compound product with CC single functional group and dual functional group, it can better deal with the problems of volume shrinkage and shrinkage internal stress during curing In order to solve the problem of poor adhesion of UV curable coatings, a kind of adhesion promoter containing phosphoric acid group was prepared by electrophilic addition reaction of hydroxyethyl acrylate or hydroxyethyl methacrylate with phosphorus pentoxide under certain conditions The total reaction time was determined to be 3.5H by acid value tracking test The IR analysis of the product shows that the hydroxyl group in the reactant has reacted completely and the formation of double bond of phosphoric acid group and CC in the product The results show that the two products have a good adhesion promoting effect on UV curable coating and metal, glass, wood and other polar substrate, and determine the advantages of the self-made products [focus on WeChat official account "paint net"; pay attention to surprises, scan code to see if your husband is selling paint.. "Exchange group: 92525666] coatings home is focused on coatings, diatom mud, paint and coatings, coating technology, fire retardant coatings news information and coating, diatom mud, paint and coating, coating technology, fire retardant coatings decoration knowledge and decoration effect map.