采用一步法对钢铁表面化学吸附成膜技术进行了研究,通过单因素试验优化出较佳的工艺条件:聚乙二醇(400) 20 mL/L,三乙醇胺40 mL/L,硅烷偶联剂10 mL/L,丙三醇15mL/L,温度45℃,pH=10,处理时间8 min.试验结果表明,在此条件下得到的化学吸附膜耐硫酸铜点滴时间为68 s,附着力0级,冲击强度50 kg·cm.该化学吸附膜综合性能优于传统的磷化膜.
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