CN110527395A - 一种耐磨涂料及其制备方法与应用 - Google Patents

一种耐磨涂料及其制备方法与应用 Download PDF

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CN110527395A
CN110527395A CN201910874032.7A CN201910874032A CN110527395A CN 110527395 A CN110527395 A CN 110527395A CN 201910874032 A CN201910874032 A CN 201910874032A CN 110527395 A CN110527395 A CN 110527395A
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resin
wear
coating
resistant paint
organic solvent
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宋延鹏
申昭礼
张冬杰
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XI'AN COMPWELL ENERGY TECHNOLOGY Co Ltd
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Abstract

本发明一种耐磨涂料及其制备方法与应用。该涂料由以下质量比例的原料制备而成：有机溶剂、成膜树脂5wt％～25wt％、润滑填料1wt％～25wt％、研磨料0.1wt％～2wt％、偶联剂0.2wt％～2wt％、助剂1wt％～2wt％、分散剂1wt％～2wt％、消泡剂1wt％～2wt％。本发明采取一种合适的表面预处理技术，该涂料综合了研磨料对螺纹表面微小毛刺研磨、无机润滑填料的极压条件下减磨耐磨润滑、聚四氟乙烯的极低摩擦系数的协同作用，在螺纹接头上卸扣拧接过程中自动研磨修复螺纹表面的微小毛刺与划痕，保障螺纹接头在超过20次的上卸扣过程中有良好润滑，避免粘扣。简化井上施工流程，提高施工效率，降低成本，增加连接可靠性，对环境无污染，且其使用不受应用地区自然条件影响。

Description

一种耐磨涂料及其制备方法与应用
技术领域
本发明涉及石油机械技术领域，尤其涉及一种耐磨涂料及其制备方法与应用。
背景技术
油套管接头上扣连接时，相互接触的内、外螺纹并非理想的光滑接触，而是存在一定的粗糙度和形状、尺寸偏差的，在接触压力的作用下，使得实际接触面积远低于理论接触面积，导致接触表面局部区域的压力超过螺纹基材的屈服极限，从而产生塑性变形，造成螺纹间相互接触的两个齿面发生冷焊现象。当两个齿面继续相对转动时，冷焊部位就会被撕裂。因此在螺纹表面上出现沿着转动的方向的伤痕，这个损伤失效过程就称之为“粘扣”。粘扣会损伤整个螺纹的表面，轻则使得该油套管接头被废弃，重则导致接头的密封性能和连接强度降低，发生脱口和泄漏的事故，给油田生产带来重大损失。目前，油管螺纹首先在工厂进行镀铜、磷化等表面处理，现场上扣连接时再涂抹螺纹脂，以避免粘扣。但是现有镀铜或磷化处理还不能满足现场油管的要求。如含铬耐蚀钢材质的直连型油套管、短节、钻/完井工具等接头螺纹，普通磷化工艺耐磨效果不好，刷镀铜技术处理速度慢。而且含铬材质偏软，在高接触压力作用下容易出现塑性变形，导致摩擦副发生冷焊，继续相对滑动时冷焊点撕裂，螺纹表面损伤，是的螺纹接头上卸扣次数不能满足标准要求。
发明内容
本发明的目的在于提供一种耐磨涂料及其制备方法与应用，以解决上述技术问题。
为实现上述目的，本发明所采用的技术方案是：
一种耐磨涂料，该涂料由以下质量比例的原料制备而成：有机溶剂、成膜树脂5wt％～25wt％、润滑填料1wt％～25wt％，、研磨料0.1wt％～2wt％、偶联剂0.2wt％～2wt％、助剂1wt％～2wt％、分散剂1wt％～2wt％、消泡剂1wt％～2wt％。
作为本发明进一步的方案：所述成膜树脂为酚醛树脂、聚酯树脂、聚酰胺树脂、聚醛树脂、醇酸树脂、不饱和树脂、氨基树脂、丙烯酸树脂、环氧树脂、聚氨酯树脂、聚缩醛、有机硅树脂及合成树脂中的一种或多种。
作为本发明进一步的方案：所述有机溶剂为溶剂为酯类有机溶剂、醇类有机溶剂、醚类有机溶剂或酮类有机溶剂中的一种或多种。
作为本发明进一步的方案：所述润滑填料包括有机润滑填料和无机润滑填料。
作为本发明进一步的方案：所述有机润滑填料为聚四氟乙烯、尼龙和缩醛树脂中的一种或多种，其粒径为20nm～10μm，含量为1wt％～10wt％。
作为本发明进一步的方案：所述无机润滑填料为二硫化钨、三氧化二锑、二硫化钼、六方氮化硼、锌粉、铜粉、石墨、石墨烯、氟化石墨等中的一种或多种，其粒径为20nm～10μm，无机润滑涂料含量为1wt％～15wt％。
作为本发明进一步的方案：所述研磨料为碳化硅、碳化硼、氮化硅、氮化硼、氧化锌等中的一种或多种，球形，其粒径为10nm～200nm。
作为本发明进一步的方案：所述偶联剂为硅烷类或钛酸酯类，在使用前3小时内加入，并搅动5分钟到10分钟。
所述涂料的制备方法：包括如下步骤：
步骤一，将润滑填料、研磨料与分散剂混合均匀；
步骤二，将上述混合物与有机溶剂按照1～30倍比例搅拌混合均匀；
步骤三，加入成膜树脂、有机溶剂、消泡剂、助剂、分散剂，混合均匀；
步骤四，将配置好的涂料密封存储；
步骤五，使用前3小时内添加偶联剂，混合均匀。
将该涂料用于含铬耐蚀钢材质油套管接头螺纹，使用方法包括如下步骤：
1)油套管螺纹处清洗，包括去污、脱脂、水洗、酸洗；
2)表面粗化处理，可采用抛丸、喷砂、磷化、超声波或热等离子技术进行粗化处理，洁净度等级不低于Sa2.5，粗糙度为Ra3μm～Ra20μm；
3)将混合均匀的涂料涂刷或喷涂于螺纹表面，可分单层或多层涂刷，涂层厚度为5μm～30μm；
4)涂刷后采用常温固化、UV固化、热固化或UV与热双重固化。
本发明与现有技术相比具有以下优点：
本发明采取一种合适的表面预处理技术，在含铬耐蚀钢油套管螺纹表面涂敷一种复合耐磨涂料，该涂料综合了研磨料对螺纹表面微小毛刺研磨、无机润滑填料的极压条件下减磨耐磨润滑、聚四氟乙烯的极低摩擦系数的协同作用，在螺纹接头上卸扣拧接过程中自动研磨修复螺纹表面的微小毛刺与划痕，保障螺纹接头在超过20次的上卸扣过程中有良好润滑，避免粘扣。此涂层现场应用时，在不涂抹螺纹脂情况下也可满足上卸扣10次的标准要求，简化井上施工流程，提高施工效率，降低成本，增加连接可靠性，对环境无污染，且其使用不受应用地区自然条件影响。
具体实施方式
下面的实施例将对本发明作更具体的解释，但本发明并不仅仅局限于这些实施例，同样这些实施例也不以任何方式限制本发明。
一种耐磨涂料，该涂料由以下质量比例的原料制备而成：有机溶剂、成膜树脂5wt％～25wt％、润滑填料1wt％～25wt％，、研磨料0.1wt％～2wt％、偶联剂0.2wt％～2wt％、助剂1wt％～2wt％、分散剂1wt％～2wt％、消泡剂1wt％～2wt％。
所述成膜树脂为酚醛树脂、聚酯树脂、聚酰胺树脂、聚醛树脂、醇酸树脂、不饱和树脂、氨基树脂、丙烯酸树脂、环氧树脂、聚氨酯树脂、聚缩醛、有机硅树脂及合成树脂中的一种或多种。所述有机溶剂为溶剂为酯类有机溶剂、醇类有机溶剂、醚类有机溶剂或酮类有机溶剂中的一种或多种。
所述润滑填料包括有机润滑填料和无机润滑填料。所述有机润滑填料为聚四氟乙烯、尼龙和缩醛树脂中的一种或多种，其粒径为20nm～10μm，含量为1wt％～10wt％，无机润滑填料含量为1wt％～15wt％。所述无机润滑填料为二硫化钨、三氧化二锑、二硫化钼、六方氮化硼、锌粉、铜粉、石墨、石墨烯、氟化石墨等中的一种或多种，其粒径为20nm～10μm，无机润滑涂料含量为1wt％～15wt％。所述研磨料为碳化硅、碳化硼、氮化硅、氮化硼、氧化锌等中的一种或多种，球形，其粒径为10nm～200nm。所述偶联剂为硅烷类或钛酸酯类，在使用前3小时内加入，并搅动5分钟到10分钟。
上述涂料的制备方法：包括如下步骤：
步骤一，将润滑填料、研磨料与分散剂混合均匀；
步骤二，将上述混合物与有机溶剂按照1～30倍比例搅拌混合均匀；
步骤三，加入成膜树脂、有机溶剂、消泡剂、助剂、分散剂，混合均匀；
步骤四，将配置好的涂料密封存储；
步骤五，使用前3小时内添加偶联剂，混合均匀。
将该涂料用于含铬耐蚀钢材质油套管接头螺纹，使用方法包括如下步骤：
1)油套管螺纹处清洗，包括去污、脱脂、水洗、酸洗；
2)表面粗化处理，采用抛丸、喷砂、磷化、超声波或热等离子技术进行粗化处理，洁净度等级不低于Sa2.5，粗糙度为Ra3μm～Ra20μm；
3)将混合均匀的涂料涂刷或喷涂于螺纹表面，分单层或多层涂刷，涂层厚度为5μm～30μm；
4)涂刷后采用常温固化、UV固化、热固化或UV与热双重固化。
经试验证明本发明对Φ73.02x5.51 API EUE L80油管接头，上扣扭矩3200N·m～3500N·m，经过40次上卸扣后螺纹处扔完好无损，没有粘扣现象出现。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (10)

1.一种耐磨涂料，其特征在于：该涂料由以下质量比例的原料制备而成：有机溶剂、成膜树脂5wt％～25wt％、润滑填料1wt％～25wt％，、研磨料0.1wt％～2wt％、偶联剂0.2wt％～2wt％、助剂1wt％～2wt％、分散剂1wt％～2wt％、消泡剂1wt％～2wt％。
2.根据权利要求1所述的一种耐磨涂料，其特征在于：所述成膜树脂为酚醛树脂、聚酯树脂、聚酰胺树脂、聚醛树脂、醇酸树脂、不饱和树脂、氨基树脂、丙烯酸树脂、环氧树脂、聚氨酯树脂、聚缩醛、有机硅树脂及合成树脂中的一种或多种。
3.根据权利要求1所述的一种耐磨涂料，其特征在于：所述有机溶剂为溶剂为酯类有机溶剂、醇类有机溶剂、醚类有机溶剂或酮类有机溶剂中的一种或多种。
4.根据权利要求1所述的一种耐磨涂料，其特征在于：所述润滑填料包括有机润滑填料和无机润滑填料。
5.根据权利要求4所述的一种耐磨涂料，其特征在于：所述有机润滑填料为聚四氟乙烯、尼龙和缩醛树脂中的一种或多种，其粒径为20nm～10μm，含量为1wt％～10wt％。
6.根据权利要求4所述的一种耐磨涂料，其特征在于：所述无机润滑填料为二硫化钨、三氧化二锑、二硫化钼、六方氮化硼、锌粉、铜粉、石墨、石墨烯、氟化石墨等中的一种或多种，其粒径为20nm～10μm，无机润滑涂料含量为1wt％～15wt％。
7.根据权利要求1所述的一种耐磨涂料，其特征在于：所述研磨料为碳化硅、碳化硼、氮化硅、氮化硼、氧化锌等中的一种或多种，球形，其粒径为10nm～200nm。
8.根据权利要求1所述的一种耐磨涂料，其特征在于：所述偶联剂为硅烷类或钛酸酯类，在使用前3小时内加入，并搅动5分钟到10分钟。
9.一种如权利要求1-8任一所述涂料的制备方法：其特征在于，包括如下步骤：
步骤一，将润滑填料、研磨料与分散剂混合均匀；
步骤二，将上述混合物与有机溶剂按照1～30倍比例搅拌混合均匀；
步骤三，加入成膜树脂、有机溶剂、消泡剂、助剂、分散剂，混合均匀；
步骤四，将配置好的涂料密封存储；
步骤五，使用前3小时内添加偶联剂，混合均匀。
10.一种如权利要求1-8任一所述涂料，其特征在于，将该涂料用于含铬耐蚀钢材质油套管接头螺纹，使用方法包括如下步骤：1)油套管螺纹处清洗，包括去污、脱脂、水洗、酸洗；
2)表面粗化处理，采用抛丸、喷砂、磷化、超声波或热等离子技术进行粗化处理，洁净度等级不低于Sa2.5，粗糙度为Ra3μm～Ra20μm；
3)将混合均匀的涂料涂刷或喷涂于螺纹表面，分单层或多层涂刷，涂层厚度为5μm～30μm；
4)涂刷后采用常温固化、UV固化、热固化或UV与热双重固化。
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CN114985238A (zh) * 2022-06-24 2022-09-02 浙江中诚滑动轴承科技有限公司 一种石墨烯复合润滑涂层的耐磨垫片及其生产工艺
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