CN109439400A - 用于隧道施工的钻杆螺纹密封脂 - Google Patents

用于隧道施工的钻杆螺纹密封脂 Download PDF

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CN109439400A
CN109439400A CN201810998742.6A CN201810998742A CN109439400A CN 109439400 A CN109439400 A CN 109439400A CN 201810998742 A CN201810998742 A CN 201810998742A CN 109439400 A CN109439400 A CN 109439400A
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calcium carbonate
drill rod
constructing tunnel
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CN109439400B (zh
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王羽
王不凡
周引
张庆明
刘彬
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Chongqing Jiaotong University
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Abstract

本发明公开了一种用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯30‑40份、聚2,6‑二甲基‑1,4‑苯醚2‑6份、聚醋酸乙烯酯5‑10份、苯乙烯弹性体5‑10份、硅藻土10‑20份、碳酸钙5‑15份、陶瓷颗粒5‑15份、二氧化硅1‑5份、异丙苯过氧化氢1‑4份、N‑甲基二乙醇胺3‑8份、酸化糖精5‑10份、阻聚剂1‑3份、抗氧剂1‑5份、增粘剂1‑3份；该产品无铅、无重金属、无毒、无非生物降解成分,润滑性好，可防止粘扣现象产生。

Description

用于隧道施工的钻杆螺纹密封脂
技术领域
本发明涉及一种密封脂，特别涉及一种用于隧道施工的钻杆螺纹密封脂。
背景技术
普通的油基脂螺纹脂在上扣前是黏稠膏状，在上扣后状态不发生任何变化，但在承受高温蒸汽时，会逐渐失去其部分组分，并最终呈干涸粉末状，无法继续发挥其辅助密封与抗黏扣的作用，从而导致热量散失。由于原有的A IP螺纹脂中含有大量的重金属铅、锌等,在螺纹上扣过程中及上扣后,螺纹脂可能随油脂流出,对周围的环境和水资源造成污染；另外,使用过的螺纹脂容器及残留物也对环境污染较大。国外一些发达国家象日本、美国、加拿大等,为解决环境污染问题研究出一种绿色产品。该产品是不含铅、锌的油基脂螺纹脂,解决了油田现场污染问题,但由于螺纹脂载体仍然是油脂,而填充物采用聚四氟乙烯(特氟隆PTFE),残留物的清理和处理仍存在污染问题；另外,对这些产品进行全尺寸油套管性能评价,产品的润滑性和密封性达不到令人满意的结果。
发明内容
有鉴于此，本发明的目的在于提供一种用于隧道施工的钻杆螺纹密封脂，该产品无铅、无重金属、无毒、无非生物降解成分,润滑性好，可防止粘扣现象产生。
本发明的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯30-40份、聚2,6-二甲基-1,4-苯醚2-6份、聚醋酸乙烯酯5-10份、苯乙烯弹性体5-10份、硅藻土10-20份、碳酸钙5-15份、陶瓷颗粒5-15份、二氧化硅1-5份、异丙苯过氧化氢1-4份、N-甲基二乙醇胺3-8份、酸化糖精5-10份、阻聚剂1-3份、抗氧剂1-5份、增粘剂1-3份；
所述陶瓷颗粒的粒径为2.8μm；
所述SiO2经下述方式处理：将经400℃活化处理5h的SiO2与γ-(甲基丙烯酰氧)丙基三甲氧基硅烷混合后共同分散于经3A分子筛除水的甲苯中，超声分散10min，加热回流24h后冷却，然后以13000r/min离心分离，沉淀用无水乙醇洗涤数次后干燥，按重量比SiO2：γ-(甲基丙烯酰氧)丙基三甲氧基硅烷：甲苯＝1：2：30；
所述增粘剂为松香甘油醇15份、烷基酚醛树脂25份、苯乙烯树脂5份和二甲苯树脂10的混合物，按重量比松香甘油醇：烷基酚醛树脂；苯乙烯树脂：二甲苯树脂＝3：5：1：2。
所述碳酸钙经下述方式处理：将碳酸钙在搅拌速度为10000r/min下搅拌80min后与六偏磷酸钠和硅酸钠混合，超声处理5min，所述六偏磷酸钠的添加量为占碳酸钙的重量比为2％，所述硅酸钠的添加量为占碳酸钙的重量比为0.1％；
进一步，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯35份、聚2,6-二甲基-1,4-苯醚4份、聚醋酸乙烯酯8份、苯乙烯弹性体8份、硅藻土15份、碳酸钙10份、陶瓷颗粒10份、二氧化硅3份、异丙苯过氧化氢2份、N-甲基二乙醇胺5份、酸化糖精8份、阻聚剂2份、抗氧剂3份、增粘剂2份；
进一步，所述苯乙烯弹性体为Taipol SEBS；
进一步，所述阻聚剂为2，5-二叔丁基对苯二酚与铜盐的混合物，所述2，5-二叔丁基对苯二酚与铜盐的重量比为5：1；
进一步，所述抗氧剂为为2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香的复配；按质量比2,6-二叔丁基对甲酚：烷基化基-α-萘胺：迷迭香＝4：2：1。
本发明的有益效果：本发明的用于隧道施工的钻杆螺纹密封脂，浸润性好，密封脂可充分填充螺纹所有可能泄漏通道,并固化形成一种弹塑体聚合物,在螺纹表面形成密封层，使密封处没有空穴和缝隙,因此不会存留潮气或其它腐蚀性物质,减少了腐蚀作用，密封性好，同时具有良好的耐热性及耐寒性、耐高压性以及不老化性能，该产品无铅、无重金属、无毒、无非生物降解成分,润滑性好，可防止粘扣现象产生。
具体实施方式
实施例一
本实施例的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯30份、聚2,6-二甲基-1,4-苯醚2份、聚醋酸乙烯酯5份、苯乙烯弹性体5份、硅藻土10份、碳酸钙5份、陶瓷颗粒5份、二氧化硅1份、异丙苯过氧化氢1份、N-甲基二乙醇胺3份、酸化糖精5份、阻聚剂1份、抗氧剂1份、增粘剂1份。
实施例二
本实施例的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯40份、聚2,6-二甲基-1,4-苯醚6份、聚醋酸乙烯酯10份、苯乙烯弹性体10份、硅藻土20份、碳酸钙15份、陶瓷颗粒15份、二氧化硅5份、异丙苯过氧化氢4份、N-甲基二乙醇胺8份、酸化糖精10份、阻聚剂3份、抗氧剂5份、增粘剂3份。
实施例三
本实施例的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯30份、聚2,6-二甲基-1,4-苯醚6份、聚醋酸乙烯酯5份、苯乙烯弹性体10份、硅藻土10份、碳酸钙15份、陶瓷颗粒5份、二氧化硅5份、异丙苯过氧化氢1份、N-甲基二乙醇胺8份、酸化糖精5份、阻聚剂3份、抗氧剂1份、增粘剂3份。
实施例四
本实施例的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯40份、聚2,6-二甲基-1,4-苯醚2份、聚醋酸乙烯酯10份、苯乙烯弹性体5份、硅藻土20份、碳酸钙5份、陶瓷颗粒15份、二氧化硅1份、异丙苯过氧化氢4份、N-甲基二乙醇胺3份、酸化糖精10份、阻聚剂1份、抗氧剂5份、增粘剂1份。
实施例五
本实施例的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯35份、聚2,6-二甲基-1,4-苯醚2份、聚醋酸乙烯酯10份、苯乙烯弹性体8份、硅藻土10份、碳酸钙15份、陶瓷颗粒8份、二氧化硅1份、异丙苯过氧化氢4份、N-甲基二乙醇胺4份、酸化糖精8份、阻聚剂1份、抗氧剂2份、增粘剂3份。
实施例六
本实施例的用于隧道施工的钻杆螺纹密封脂，所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯35份、聚2,6-二甲基-1,4-苯醚4份、聚醋酸乙烯酯8份、苯乙烯弹性体8份、硅藻土15份、碳酸钙10份、陶瓷颗粒10份、二氧化硅3份、异丙苯过氧化氢2份、N-甲基二乙醇胺5份、酸化糖精8份、阻聚剂2份、抗氧剂3份、增粘剂2份。
上述实施例中，所述陶瓷颗粒的粒径为2.8μm；
所述SiO2经下述方式处理：将经400℃活化处理5h的SiO2与γ-(甲基丙烯酰氧)丙基三甲氧基硅烷混合后共同分散于经3A分子筛除水的甲苯中，超声分散10min，加热回流24h后冷却，然后以13000r/min离心分离，沉淀用无水乙醇洗涤数次后干燥，按重量比SiO2：γ-(甲基丙烯酰氧)丙基三甲氧基硅烷：甲苯＝1：2：30；
所述增粘剂为松香甘油醇15份、烷基酚醛树脂25份、苯乙烯树脂5份和二甲苯树脂10的混合物，按重量比松香甘油醇：烷基酚醛树脂；苯乙烯树脂：二甲苯树脂＝3：5：1：2。
所述碳酸钙经下述方式处理：将碳酸钙在搅拌速度为10000r/min下搅拌80min后与六偏磷酸钠和硅酸钠混合，超声处理5min，所述六偏磷酸钠的添加量为占碳酸钙的重量比为2％，所述硅酸钠的添加量为占碳酸钙的重量比为0.1％。
所述苯乙烯弹性体为Taipol SEBS。
所述阻聚剂为2，5-二叔丁基对苯二酚与铜盐的混合物，所述2，5-二叔丁基对苯二酚与铜盐的重量比为5：1。
所述抗氧剂为为2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香的复配；按质量比2,6-二叔丁基对甲酚：烷基化基-α-萘胺：迷迭香＝4：2：1。
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。

Claims (5)

1.一种用于隧道施工的钻杆螺纹密封脂，其特征在于：所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯30-40份、聚2,6-二甲基-1,4-苯醚2-6份、聚醋酸乙烯酯5-10份、苯乙烯弹性体5-10份、硅藻土10-20份、碳酸钙5-15份、陶瓷颗粒5-15份、二氧化硅1-5份、异丙苯过氧化氢1-4份、N-甲基二乙醇胺3-8份、酸化糖精5-10份、阻聚剂1-3份、抗氧剂1-5份、增粘剂1-3份；
所述陶瓷颗粒的粒径为2.8μm；
所述SiO2经下述方式处理：将经400℃活化处理5h的SiO2与γ-(甲基丙烯酰氧)丙基三甲氧基硅烷混合后共同分散于经3A分子筛除水的甲苯中，超声分散10min，加热回流24h后冷却，然后以13000r/min离心分离，沉淀用无水乙醇洗涤数次后干燥，按重量比SiO2：γ-(甲基丙烯酰氧)丙基三甲氧基硅烷：甲苯＝1：2：30；
所述增粘剂为松香甘油醇15份、烷基酚醛树脂25份、苯乙烯树脂5份和二甲苯树脂10的混合物，按重量比松香甘油醇：烷基酚醛树脂；苯乙烯树脂：二甲苯树脂＝3：5：1：2。
所述碳酸钙经下述方式处理：将碳酸钙在搅拌速度为10000r/min下搅拌80min后与六偏磷酸钠和硅酸钠混合，超声处理5min，所述六偏磷酸钠的添加量为占碳酸钙的重量比为2％，所述硅酸钠的添加量为占碳酸钙的重量比为0.1％。
2.根据权利要求1所述的用于隧道施工的钻杆螺纹密封脂，其特征在于：所述密封脂原料按重量份包括以下组分：甲基丙烯酸二缩三乙二醇双酯35份、聚2,6-二甲基-1,4-苯醚4份、聚醋酸乙烯酯8份、苯乙烯弹性体8份、硅藻土15份、碳酸钙10份、陶瓷颗粒10份、二氧化硅3份、异丙苯过氧化氢2份、N-甲基二乙醇胺5份、酸化糖精8份、阻聚剂2份、抗氧剂3份、增粘剂2份。
3.根据权利要求1所述的用于隧道施工的钻杆螺纹密封脂，其特征在于：所述苯乙烯弹性体为Taipol SEBS。
4.根据权利要求3所述的用于隧道施工的钻杆螺纹密封脂，其特征在于：所述阻聚剂为2，5-二叔丁基对苯二酚与铜盐的混合物，所述2，5-二叔丁基对苯二酚与铜盐的重量比为5：1。
5.根据权利要求4所述的用于隧道施工的钻杆螺纹密封脂，其特征在于：所述抗氧剂为为2,6-二叔丁基对甲酚、烷基化基-α-萘胺和迷迭香的复配；按质量比2,6-二叔丁基对甲酚：烷基化基-α-萘胺：迷迭香＝4：2：1。
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