Study On Preparation And Properties Of UV Curing Coatings

UV curing coating has the advantages of energy saving,no volatile organic matter,fast curing speed,bright color and so on.It is a hot research topic in the field of environmental protection materials at home and abroad.Compared with the traditional textile coating printing process,the textile UV curing technology is suitable for the rapid customization of personalized textiles,has a good market prospects at E-commerce and Personalized experience entity store.The purpose of this study is to prepare stable dispersion of textile UV coatings,application performance and research in the textile coating.Firstly,the effects of the components of UV curing coating on the stability,viscosity and surface tension.Then,discusses was center on the influencing the curing speed.In the end the transparency,adhesion,coloring,rubbing fastness and breaking strength of UV curing coating were carefully characterized.The main research contents and conclusions of this paper are as follows:To improve the stability of the UV curing coating,preparation of UV curable coatings by high speed dispersion method,effects of seven monomers and four oligomers to thermal stability and centrifugal stability of UV curing coating ware discussed.The experimental results were characterized by particle size,absorbance and centrifugal stability.Results showed that after the thermal storage,the particle size of colored fabric of UV curing coating prepared by EOEOEA,NPGDA and TMPTA,the oligomer 6201 were changed small,absorbance stability are above95% and centrifugal stability in more than 85%,can be used to prepare the high stability of UV curing coatings.The components of UV curing coating have different effects on the viscosity,surface tension and cure rate.The effect of monomer on the viscosity,surface tension and cure rate of UV curing coating was very great,with the increase of monomer functional groups,the viscosity and surface tension of UV curing coatings become larger,and the curing speed is accelerated.The minimum viscosity of UV curing coatings prepared by epoxy oligomer 6104-80,with the increase of the amount of oligomer,the viscosity of UV curing coating becomes larger.The effect of oligomer on the surface tension of UV curing coatings is small.The cure rate of theepoxy oligomer is faster than that of the polyurethane oligomer,with the increase of functional degree of polyurethane oligomer,the cure rate is accelerated.The effect of initiator on the viscosity of UV curing coating is very small,but it plays a decisive role in curing speed,the cure rate of the speed is 369 > ITX > BP > DETX > 907 > TPO > 1173 > 184 > EDB.With the increase of the amount of the initiator,the curing time decreased rapidly,and the saturated dosage of initiator was 7%.The effects of different monomers,oligomers,photoinitiators,and percent of oligomer and colorant concentration to transparency of UV curing coating are discussed.Results showed that light transmittance of three functional groups monomer TMPTA is the lowest,single functional monomer IBOA is the highest.Transparency of polyurethane oligomer is better than that of epoxy oligomer,6201 is the best.Light transmittance of ITX is the lowest,but 907 is the highest in test of 9 kinds photoinitiators.With the increase of the amount of oligomer and paste,the light transmittance of UV curing coating decreased significantly.The effects of UV curing coating composition on adhesion,coloring property,rubbing fastness and breaking strength were explored.Three functional monomer TMTPA,oligomer6201 of the best adhesion,with the increase in the amount of oligomer,adhesion weakened.K/S value of bifunctional monomer TPGDA?NPGDA?HDDA and PDDA were the largest,and K/S values of Single functional monomer EOEOEA and IBOA were the second,and the K/S value of the three functional monomer TMPTA was the smallest.The effect of oligomer on K/S value was6201 > polyurethane acrylate > 6104-80 > 6318,With the increase of the amount of oligomer,the K/S value of the fabric first increases and then decreases,and the K/S value is maximum when the amount of the oligomer is 30%.With the increase of paste dosage,K/S value increases,when the amount of paste is more than 9%,K/S value is not increased,but declined.The wet rubbing fastness of dry rubbing fastness of the dyed fabrics,with the increase of functional monomers,rubbing fastness became better.The wet and dry rubbing fastness of the oligomer6104-80 and 6318 was the best,reaching the level of 5.Compared with the original fabric,the fabric breaking strength of UV curing coating was increased,and the elongation at break decreased.