CN109207234A - 一种环保型盾构机盾尾密封油脂及其制备方法 - Google Patents
一种环保型盾构机盾尾密封油脂及其制备方法 Download PDFInfo
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Abstract
本发明涉及润滑密封材料领域,具体的说是一种环保型盾构机盾尾密封油脂及其制备方法。以该密封油脂的总重量为基准,所述原料的组分为:25%‑45%的基础油、25%‑50%的粉状填料、13%‑18%的稠化剂、5%‑17%的增粘剂、1%‑5%的极压抗磨剂、2.5%‑8%的纤维。本发明所制备的盾尾密封油脂与现有的技术相比其突出的优点是原料不含有s、p、cl、等具有污染环境和土壤的元素或离子,制备得到的润滑脂具有很好的泵送性、密封性、润滑性、抗磨、抗负载以及环境友好等特性,解决了现存技术中所存在的极压抗磨、润滑、泵送、环保等方面存在的不足的问题。
Description
技术领域
本发明涉及一种密封油脂,尤其是盾构机用环保型盾尾密封油脂。
背景技术
盾构机即盾构隧道掘进机是一种修建隧道时的施工工具,它可以起到开挖地层及拼装衬砌时起到撑起地底土层压力的作用。当前随着国内基础建设的发展、各大城市地铁、隧道、公路、市政工程、水电隧道工程的建设,盾构机已经成为被逐渐普遍采用的一种施工方式。地底空间的不断利用与有效的开发充分体现了一个城市乃至一个国家工程技术的发展水平,一项工程隧道的圆满完成起决定作用的就是盾构掘进机的使用及其性能能否满足于所在的施工环境以及地层结构的需要。
盾构机盾尾是由盾构外壳钢板延长构成,主要用于掩护隧道衬砌的安装工作。盾尾末端设有密封系统,由于在盾构机施工期间有水、土及注浆材料的产生则需要使用盾尾密封油脂来防止盾构机施工阶段产生的水、土、泥浆从盾尾与衬砌之间进入盾构内。尤其是在盾尾部的盾尾刷为了防止尾部渗入泥水和土渣等需要对其注入大量的盾尾密封油脂来保证盾尾部位的密封性。如今越来越多的先进电子科学技术开始应用在盾构机中大大提高其使用效率和施工进程这在很大程度上也要归功于盾构机中密封油脂的作用。由于润滑脂的润滑和密封作用使得盾构机尤其是盾尾设备在使用中在很大程度上提高了其使用寿命,同时加快了盾构机在使用过程中的掘进速度。但是随着盾构机掘进过程中地层结构的不断变化使得盾构机盾尾密封系统会时常的发生损坏、磨损、更换、等一系列问题。所以盾构机用密封油脂应该具备以下特点:优异的密封性、泵送性、润滑性、抗氧化性、极压抗磨性、环境友好性等。
发明内容
本发明的目的是提供一种具有较好极压抗磨性、润滑性、泵送性、密封性、抗氧化性、环境友好、添加剂无有害元素、离子的可降解性盾构机盾尾密封油脂及其制备方法。
为解决上述技术问题,本发明第一方面提供一种环保型盾构机盾尾密封油脂,其特征在于,其由如下质量百分比的组分组成:25%-45%的基础油、25%-50%的粉状填料、13%-18%的稠化剂、5%-17%的增粘剂、1%-5%的极压抗磨剂、2.5%-8%的纤维。
优选地,基础油为酯类油、合成油中的一种或他们的混合物,更优选地,基础油为酯类油与合成油按照3~4:1~2(质量比)范围调和而成。所述酯类油为聚酯,所述聚酯选自PET、PBT和聚芳酯;合成油为聚α烯烃(PAO)。
优选地,粉状填料选自超细碳酸钙、云母粉、氧化钙、氢氧化钙、滑石粉、钛白粉、立德粉、硅藻土中的一种或多种的混合物,优选地,粉状填料颗粒直径范围为25-350微米。
优选地,稠化剂选自复合铝、复合磺酸钙中的一种或二者混合物。
优选地,增粘剂选自可降解性聚酯树脂、聚氨酯、醇酸树脂聚乙烯聚丙烯共聚物、硅树脂、尿醛树脂中的一种或多种的混合物,优选的是可降解聚酯树脂、聚氨酯、醇酸树脂。
优选地,纤维为植物纤维,例如植物茎干纤维或竹子纤维、合成纤维中的一种或多种混合物,优选选自植物纤维;所述合成纤维选自聚氨酯纤维、聚丙烯腈、聚酯纤维中的一种或多种的混合物。
优选地,极压抗磨剂选自聚四氟乙烯、石墨、氟化石墨、石墨烯、氮化硼中的一种或两种以上的混合。
一种环保型盾构机盾尾密封油脂,其特征在于,其由如下质量百分比的组分组成:35%的基础油、40%的粉状填料、12%的稠化剂、8%的增粘剂、2%的极压抗磨剂、3%的纤维。
一种环保型盾构机盾尾密封油脂,其特征在于,其由如下质量百分比的组分组成:32%的基础油、33%的粉状填料、15%的稠化剂、12%的增粘剂、3%的极压抗磨剂、5%的纤维。
一种环保型盾构机盾尾密封油脂,其特征在于,其由如下质量百分比的组分组成:38%的基础油、29%的粉状填料、13%的稠化剂、10%的增粘剂、4%的极压抗磨剂、6%的纤维。
本发明第二方面提供环保型盾构机盾尾密封油脂的制备方法,其包括如下步骤:
(1)首先在室温环境条件下将基础油、增粘剂以及稠化剂加入捏合机加热升温至60℃-80℃进行捏合反应60-90分钟;
(2)然后待反应混合物降温至40℃-60℃时加入纤维材料和极压抗磨剂并在此温度下捏合反应30-60分钟;
(3)最后向其中加入辅助填料混合搅拌均匀,经冷却、研磨即得一种环保型盾构机盾尾密封油脂。
本发明所制备的盾尾密封油脂与现有的技术相比其突出的优点是原料不含有s、p、cl、等具有污染环境和土壤的元素或离子,如使用的极压抗磨添加剂为聚四氟乙烯、石墨、氟化石墨、石墨烯、氮化硼中的一种或它们一定比例的混合物,所用的基础油皆为可降解性能优异、润滑性、抗氧化性较好的润滑油;稠化剂为复合铝及复合磺酸钙。因此制备得到的润滑脂具有很好的泵送性、密封性、润滑性、抗磨、抗负载以及环境友好等特性,解决了现存技术中所存在的极压抗磨、润滑、泵送、环保等方面存在的不足的问题。且制备工艺简单,原材料便宜易得。
具体实施方式
下面的实施例是对本发明的进一步阐述,但本发明的内容不限于此。本发明说明书中的实施方式仅用于对本发明进行说明,其并不对本发明的保护范围起到限定作用。本发明的保护范围仅由权利要求限定,本领域技术人员在本发明公开的实施方式的基础上所做的任何省略、替换或修改都将落入本发明的保护范围。
实施例1
实例一中使用如下组分制备该盾尾密封润滑脂:质量分数为35%聚芳酯与PAO(4:1)做为基础油、质量分数为12%的复合磺酸钙作为稠化剂、质量分数为3%的天然植物纤维作为纤维添加剂、质量分数为8%的可降解性聚酯树脂、聚氨酯、醇酸树脂作为增粘剂、质量分数为2%的石墨、氮化硼、聚四氟乙烯作为极压抗磨剂、质量分数为40%的超细碳酸钙、云母粉、氧化钙、氢氧化钙作为粉状填料。
其制备方法为:首先在室温环境条件下将基础油、增粘剂以及稠化剂加入捏合机加热升温至60℃-80℃进行捏合反应60-90分钟;然后待反应混合物降温至40℃-60℃时加入纤维材料和极压抗磨剂并在此温度下捏合反应30-60分钟;最后向其中加入辅助填料混合搅拌均匀,经冷却、研磨即得一种环保型盾构机盾尾密封油脂
实例2
使用如下组分制备该盾尾密封润滑脂:质量分数为32%的聚对苯二甲酸乙二酯与PAO(3.5:1.5)作为基础油、质量分数为15%的复合铝作为稠化剂、质量分数为5%的合成纤维作为纤维添加剂、质量分数为12%的聚乙烯聚丙烯共聚物、硅树脂、尿醛树脂混合物作为增粘剂、质量分数为3%的氟化石墨、石墨烯作为极压抗磨添加剂、质量分数为33%的滑石粉、钛白粉、立德粉、硅藻土作为粉状填料。
其制备方法为:首先在室温环境条件下将基础油、增粘剂以及稠化剂加入捏合机加热升温至60℃-80℃进行捏合反应60-90分钟;然后待反应混合物降温至40℃-60℃时加入纤维材料和极压抗磨剂并在此温度下捏合反应30-60分钟;最后向其中加入辅助填料混合搅拌均匀,经冷却、研磨即得一种环保型盾构机盾尾密封油脂
实例3
使用如下组分制备该盾尾密封润滑脂:质量分数为38%的聚对苯二甲酸丁二酯与PAO(3:2)混合物作为基础油、质量分数为13%的复合磺酸钙、复合铝作为稠化剂、质量分数为6%的天然植物纤维、合成纤维作为纤维添加剂、质量分数为10%的可降解性聚酯树脂、聚氨酯、醇酸树脂聚乙烯聚丙烯共聚物、硅树脂、尿醛树脂混合物作为增粘剂、质量分数为4%的聚四氟乙烯、石墨、氟化石墨、石墨烯、氮化硼作为极压抗磨剂、质量分数为29%的超细碳酸钙、云母粉、氧化钙、氢氧化钙、滑石粉、钛白粉、立德粉、硅藻土作为粉状填料。
其制备方法为:首先在室温环境条件下将基础油、增粘剂以及稠化剂加入捏合机加热升温至60-80℃进行捏合反应60-90分钟;然后待反应混合物降温至40℃-60℃时加入纤维材料和极压抗磨剂并在此温度下捏合反应30-60分钟;最后向其中加入辅助填料混合搅拌均匀,经冷却、研磨即得一种环保型盾构机盾尾密封油脂
本发明的盾尾密封润滑脂解决了现存技术中所存在的极压抗磨、润滑、泵送、环保等方面存在的不足的问题。
实例3 润滑脂性能检测结果
序号 | 检测项目 | 检测结果 |
1 | 外观 | 灰黑色纤维状膏体 |
2 | 密度 | 1.25--1.33 |
3 | 低温流动性(-20℃以下) | 良好 |
4 | 锥入度 | 260 |
5 | 相似粘度(-15℃,10S<sup>-1</sup>)/Pa·S() | 555 |
6 | 泵送性(中号黄油枪) | 可打出 |
7 | 抗水压密封性 | 不漏水 |
上述实例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人是能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所做的等效变换或修饰,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种环保型盾构机盾尾密封油脂,其特征在于,其由如下质量百分比的组分组成:25%-45%的基础油、25%-50%的粉状填料、13%-18%的稠化剂、5%-17%的增粘剂、1%-5%的极压抗磨剂、2.5%-8%的纤维。
2.根据权利要求1所述的盾尾密封油脂,其特征在于,基础油为酯类油、合成油中的一种或他们的混合物。
3.根据权利1所述的盾尾密封油脂,其特征在于,基础油为酯类油与合成油按照3~4:1~2质量比范围调和而成。
4.根据权利要求1所述的盾尾密封油脂,其特征在于,稠化剂为复合磺酸钙、复合铝中的一种或他们的混合物。
5.根据权利要求1所述的盾尾密封油脂,其特征在于,增粘剂选自可降解性聚酯树脂、聚氨酯、醇酸树脂聚乙烯聚丙烯共聚物、硅树脂、尿醛树脂中的一种或多种的混合物。
6.根据权利要求1所述的盾尾密封油脂,其特征在于,极压抗磨剂为聚四氟乙烯、石墨、氟化石墨、石墨烯、氮化硼中的一种或多种的混合。
7.根据权利要求1所述的盾尾密封油脂,其特征在于,粉状填料选自超细碳酸钙、云母粉、氧化钙、氢氧化钙、滑石粉、钛白粉、立德粉、硅藻土中的一种或多种的混合物。
8.根据权利要求1所述的盾尾密封油脂,其特征在于,纤维为植物纤维、合成纤维中的一种或多种混合物。
9.根据权利要求8所述的盾尾密封油脂,其特征在于,合成纤维选自聚氨酯纤维、聚丙烯腈、聚酯纤维中的一种或多种的混合物。
10.制备如权利1-9任一项所述的环保型盾构机盾尾密封油脂的方法,其特征在,包括如下步骤:
(1)首先在室温环境条件下将基础油、增粘剂以及稠化剂加入捏合机加热升温至60℃-80℃进行捏合反应60-90分钟;
(2)然后待反应混合物降温至40℃-60℃时加入纤维材料和极压抗磨剂并在此温度下捏合反应30-60分钟;
(3)最后向其中加入辅助填料混合搅拌均匀,经冷却、研磨即得一种环保型盾构机盾尾密封油脂。
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