無機高分子をベースにした電機用多機能化成処理皮膜の開発

摘要

As electrogalvanized steel sheets, EG, for electrical appliances, multi-functional conversion coatings were developed in order to meet recent requirements for additional as well as and higher functions to enable manufacturers to use EG with fewer processes. This conversion coatings achieved high corrosion resistance and high conductivity by applying "eNano~(TM) coat" technology. The "eNano~(TM) coat" has two film formation concepts. First is using a neutral treatment solution to maintain conductive points by preventing dissolution of the convex parts of zinc crystals. Second is high barrier layer by inorganic polymer with a thin film. Furthermore, JFE Steel has commercialized multifunctional conversion treated steel sheets with a high anti-fingerprint property, paint adhesion, press formability and galling resistance by blending the optimum organic resin and lubricants in the composite coating.%家電用電気亜鉛めっき鋼板に要求される品質性能の多様化や高度化，ユーザーでの工程省略に対応すべく，多機能化成処理皮膜を開発した。この皮膜は，化成処理液の中性化により亜鉛結晶凸部の溶解を抑制することで導通点を確保し，かつ薄膜で高いバリア性を有する無機高分子皮膜「eNano~®コート」技術を活用することにより，高度な耐食性と導電性の両立を実現した。更に樹脂，潤滑剤の複合化により，耐指紋性，塗料密着性，プレス成形性，耐疵っき性を兼ね備えた多機能化成処理鋼板を商品化した。 商品名：エコフロンティア~® JN2