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发明授权
CN104513608B 一种油套管接头防粘扣涂层及其制备方法 有权

一种油套管接头防粘扣涂层及其制备方法
摘要：
一种油套管用螺纹接头防粘扣涂层及其制备方法，其组分质量百分比为：有机粘结剂30%～60%、固体滑润剂30%～60%、防腐蚀剂6%～15%、流平剂0.01%～0.1%、润湿剂0.01%～0.1%、混合溶剂外加，其添加量是所述有机粘结剂、固体滑润剂、防腐蚀剂、流平剂和润湿剂固体总质量的3～4倍；混合溶剂的成分质量百分比为：N甲基吡咯烷酮40～50%，二甲基甲酰胺30～40%，乙酸乙酯10～20%。在磷酸盐处理的油套管接头表面通过喷涂本发明的涂料，得到油套管接头不使用螺纹脂防粘扣涂层，解决了螺纹脂中重金属粉末对环境造成的污染。
摘要（英）：

An anti-galling coating for a threaded joint of an oil casing. The mass percentages of the components of the coating are: organic binder 30-60 wt%, solid lubricant 30-60 wt%, anticorrosive agent 6-15 wt%, leveling agent 0.01-0.1 wt%, wetting agent 0.01-0.1 wt% and mixed solvent in addition. The organic binder is polyamide-imide liquid resin with a solid content of 38-42 wt%. The solid lubricant is any one of molybdenum disulphide and tungsten disulfide, or a combination of molybdenum disulfide or tungsten disulfide and polytetrafluoroethylene. Preferably the solid lubricant and the anticorrosive agent are surface modified with silane coupling agent. The anti-galling coating is obtained by spraying the coating on the surface of an oil casing joint processed with phosphate, and the environmental pollution caused by heavy metal powder in thread compounds is avoided.

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