| UV-cured coatings is a new arisen coatings in 1980s.It is unirritative to bodys,does not contain volatile impregnant,low price,solidify speedly, both has the function of film-former and thinner,and the solidified temperature is lowness,and it is effective to heat-sensitive coatings(such as woodwork,paperwoods,delicatessen etc.)The basis of UV-cure coatings including oligomer,monomer and photoinitiator.The monomer also called as active thinner or multifunctional acrylate.it is a very important part of UV-cured formulation,as it not only can adjust viscosity but also is a kind of film-dormer substance,it can make distinct effect on the finaly performance of the coat,the activity,function and the shrinkrate of monomer is the main factor to decide the characteristic of the coat(such as the speed of solidify,flexibility,rigidity). Unsaturated photosensitive resin is the main material to produce UV-cured coatings.At present,unsaturated polyester resins,polyurethane acrylate,unsaturated vinyl ether resins are generally used.Acrylate resin coatings are made up by the resins that is conpolymerize by coacrylate,methacrylate and others Olefinic monomer,and belongs to high-decorated coatings.The coat formed by acrylate resin is brightly,fully,colorly,it has excellent characteristics as light-keep,color-keep,wather-resistant,heat-resistant and causticity-resistant,because of this,acrylate resin is the perfect film-former used as outdoor coat material,which can be used in the field of air-plane,car,apparates and equipment,build,home appliance,road and bridge,spin,food vessel etc.According to the demand of cleaner production of UV-cured coating,a new monomer of acrylate UV-cured coating has been synthesized,the best technical conditions are confirmed step by step based on the experiment.On this condition,epoxy resin is used to modify so that it will have more advantage and performance.More experiment basis are supplied for industry produce,and both theory and technical support are offered to achieve cleaner production in UV-cured coating.The traditional production process is improved:the traditional method of dehydration is replaced by torrefaction,in order to reduce the sewerage appeared during the dehydration radically;high efficient catalyzer and polymerization inhibitor are chosen to greatly improved the yield of product;methods like decompress fractionation are chosen to separate the product,in order to reduce the product's loss and pollution during the process of separation;base on the actual industrial produce,the problem of the liquid which have to be vent during the process is solved,and the liquid is translate into a new UV-cured coating, the cost is reduce, the corporation's income is increase,and the cleaner production is achieved. |
