摘要:制备了14种膦酸缓蚀剂,其中7种为新报道的化合物.考查了膦酸浓度及溶液pH值对缓蚀性能的影响,分析了膦酸分子结构与缓蚀性能的关系,探讨了膦酸的缓蚀机理.结果表明,在膦酸的浓度低于100mg/L时,随着膦酸浓度的增大,对Q235钢的缓蚀能力明显加强;在高pH值条件下,膦酸的缓蚀效果较好.表面膜分析证实膦酸是一种吸附型的缓蚀剂,苯环上供电子基团有利于形成致密的保护膜.
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