含硅丙烯酸酯在紫外光固化涂料中的应用研究

合成了氨基硅油改性丙烯酸酯(AMPA),将其与PTFE微蜡粉、PE改性PTFE微蜡粉作为表面改性剂加入到紫外光(UV)固化涂料中,用红外光谱对固化前后进行了表征,研究了其对UV固化膜耐磨性的影响,考察了固化膜表面元素的富集现象,并测试了固化膜表面水接触角和光泽度的变化。研究结果表明,表面改性剂具有自润滑的作用,少量加入即能显著地提高固化膜的耐磨性,含硅改性丙烯酸酯(AMPA)的质量分数由0.0%增加到1.0%时,光固化膜耐磨测试质量损失由22.8mg下降到9.2mg,表面水接触角由43.3o增加到100.3o,表面光泽度由113.5°下降到95.5°。

Application study on acrylate containing silicon used in UV-curable coatings

Amido modified polyorganosiloxane acrylate （AMPA） was synthesized. A series of UV-curable coatings were prepared by using amido modified polyorganosiloxane acrylate （AMPA）,PTFE micro-wax powder or PE modified PTFE micro-wax powder as surface modifiers. The UV-cured process was characterized by means of FT-IR measurements. The wear resistance,surface elements,water contact angle and gloss of UV-curable films were investigated. The results show that these surface modifiers have self-lubricating action,and small content （0.5%—2%） causes significant increment of wear resistance of cured coatings. When the mass content of amido modified polyor-ganosiloxane acrylate （AMPA） changes from 0.0% to 1.0%,the mass loss of wear resistance measurements of UV-cured films decreases from 22.8mg to 9.2 mg and water contact angle increases from 43.3° to 100.3°,but the gloss of UV-cured films decreases from 113.5°to 95.5°.