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    油套管特殊螺紋接頭抗粘扣自潤滑涂層性能研究

    Performance Study of Anti-galling Self-lubricating Coating for Premium Thread Connection for Tubing and Casing

    • 摘要: 以API標(biāo)準(zhǔn)P110鋼級(jí)材質(zhì)為基體材料，采用噴涂方法制備自潤滑涂層。自潤滑涂層以聚酰胺酰亞胺－環(huán)氧樹脂為黏結(jié)劑，添加固體潤滑劑二硫化鉬和聚四氟乙烯。利用涂層附著力測(cè)定儀、摩擦磨損試驗(yàn)機(jī)，研究二硫化鉬和聚四氟乙烯含量對(duì)涂層附著力、摩擦學(xué)特性的影響。試驗(yàn)結(jié)果表明：當(dāng)聚酰胺酰亞胺－環(huán)氧樹脂中改性二硫化鉬的含量為30%（質(zhì)量分?jǐn)?shù)）、聚四氟乙烯含量為7%（質(zhì)量分?jǐn)?shù)）時(shí)，固化溫度為280～300℃，保溫時(shí)間為10～15 min，自潤滑涂層具有良好的附著力、摩擦磨損性能，可滿足油套管特殊螺紋接頭的抗粘扣性能。

       

      Abstract: The base material is made of API grade P110 steel，while the surface is sprayed with self-lubricating coating which consists of polyamide-imide-epoxy resin（PAI-EP）as a binder and molybdenum disulfide（MoS2） and polytetra fluoroethylene（PTFE） as solid lubricants.The influence of the content of MoS2and PTFE on the adhesive force and friction characteristics of the coating is studied by means of coating adhesive force tester and friction wear tester.The test results indicate that the self-lubricating coating shows good adhesive force and friction-wear characteristics when the content of modified MoS2in PAI-EP is 30% （mass fraction） and the content of PTFE in PAIEP is 7% （mass fraction），with curing temperature of 280～300 ℃ and holding time of 10～15 min.The self-lubricating coating prepared under the above-mentioned condition can meet the requirements of anti-galling of premium thread connec-tions for tubing and casing.

       

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