紫外光固化涂料附着力促进剂的研制

Preparation of adhesion promoter for UV curable coatings

为了解决紫外光固化涂料附着力差的问题,以丙烯酸羟乙酯或甲基丙烯酸羟乙酯与五氧化二磷为原料在一定条件下进行亲电加成反应制得可紫外光固化的含磷酸基团的附着力促进剂。采用酸值跟踪测试确定总反应时间为3.5h。对产品进行红外光谱分析,表明反应物中的羟基已经完全反应以及产物中磷酸基团与CC双键的形成。对比了自制产品与市售产品在不同板材上的性能,结果表明这两种产品对紫外光固化涂料与金属、玻璃、木材等极性基材都具有很好的附着促进作用,并确定了自制产品的优势。

To solve the problem of low adhesion of UV curable coatings, we have prepared the adhesion promoter which contains phosphoric groups through the electrophilic addition reaction of hydroxyethyl acrylate and hydroxyethyl methacrylate with phosphorus pentoxide under certain conditions. Acidic value tracking tests show that the total reaction time is 3.5h. And IR spectrum analysis show that hydroxyl has been completely transformed and phosphoric groups and C=C have been formed in the product. By comparing the use of the product with the commercial products in different sheet materials, it is concluded that these products are of good adhesion promoting effect for UV curable coatings on the polar materials of metal, glass and wood; and the superiority of our product is showed.