利用矽氧烷化合物與金屬(鐵、鋁、鈦)可以行Sol-gel Process產生穩定的共價鍵，可形成穩固且不易破壞的結構。實驗以含矽氧烷基的樹脂添加自由基硬化型環氧樹脂(UV Epoxy)和三羥甲基丙烷三丙烯酸酯(TMPTA)，以不同比例混合後，使用旋轉塗佈(Spin-coating)塗佈在金屬表面上後，以照射紫外光來產生自由基使混摻的化合物產生交聯，其不僅是矽氧烷化合物與金屬之間的共價鍵，且因加入的TMPTA和Epoxy產生架橋，而在金屬表面上形成緻密穩定的表面塗層。接著再進一步塗佈具疏水性官能基的面漆，進行紫外光交聯後，讓金屬、底漆與面漆產生緊密的結合，使得塗佈的底漆與面漆緻密覆蓋於金屬上達到相當好的抗腐蝕效果。加工後之鐵、鋁和鈦金屬皆可以達到放置在鹽霧測試中可以維持500小時不被腐蝕的效果。 The bonding between silane and metals is stable. This characteristic can form the structures which are firm and difficult to destroy. In this experiment, we modify different ratio of UV Epoxy and TMPTA, then we use spin-coating method to spread them on metals’ surface. After that we add appropriate amount of Photoinitiator to UV-curing. Exposing in UV light produce free radicals which lead compositions to crosslinking. The reason why these compositions coat compactly and stably on metals’ surface, not only are the covalent bonding between sliane and metals stable, but also TMPTA and Epoxy produce bridging.Then we add PU which containing hydrophobicity functional to anti-corrosion.The best results in our experiments are that the top coat containing OFP- function which could put in salt-spray test without corrosion more than 500 hours.
