CN107090339A - 盾尾密封油脂及其制备方法 - Google Patents

盾尾密封油脂及其制备方法 Download PDF

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CN107090339A
CN107090339A CN201710362387.9A CN201710362387A CN107090339A CN 107090339 A CN107090339 A CN 107090339A CN 201710362387 A CN201710362387 A CN 201710362387A CN 107090339 A CN107090339 A CN 107090339A
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周忠太
李保莉
齐瑞琴
周征寰
时红敏
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Xinxiang Hengxing Technology Co Ltd
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Abstract

本发明提供一种盾尾密封油脂，由以下重量份的原料制备而成的：基础油30‑50份、增粘剂3‑10份、纤维10‑25份、透明粉25‑40份、膨润土1‑5份，脂肪酸盐15‑30份，复合多效添加剂0.4‑1份，防锈剂1‑2份。本发明提供的盾尾密封油脂具有良好的密封性，良好的粘附性，良好的抗水冲性，良好的泵送性，良好的工作稳定性。

Description

盾尾密封油脂及其制备方法
技术领域
本发明涉及盾尾密封油脂及其制备方法。
背景技术
目前，为了不影响已建地面建筑和人们的日常生活，人口密集型地下工程建设主要采用盾构施工法，施工的主要机械是盾构机，盾构机在掘进时，盾尾与已装管片间存在相对滑动，为了防止外部地下水和泥浆涌入盾首，必须在盾尾和管片之间装有盾尾密封装置。盾尾密封油脂是盾尾和管片之间的主要密封材料之一，具有密封和润滑的作用，可有效地保护盾尾，隔绝地下水和泥浆，保证盾构机顺利推进；同时，还具有防止盾构腐蚀和减少磨损的作用。
盾尾密封油脂的密封原理是：油脂借助压力注入，充满钢丝刷排的空间，同时挤入钢丝刷的钢丝间隙，增强钢丝刷的密封性能，防止土砂和注浆材料的侵入。盾构在推进过程中，边推进边注入密封油脂，借助油脂的挤压力，填充在盾构掘进过程中隧道衬砌与钢丝刷之间的运动间隙，进而油脂与钢板、钢丝刷共同作用，形成一圈密封环，起到优异的密封作用。借助密封油脂与钢板和钢片的良好粘附性，起到防水与润滑的双重作用。
现在市场上也有很多种类的盾尾密封油脂，但这些技术目前都存在一个技术问题，那就是盾尾密封油脂的极压抗磨性差，最后会造成盾尾摩擦力增大，盾尾刷磨损严重。
发明内容
本发明的目的是提供盾尾密封油脂及其制备方法，制备的盾尾密封油脂极压抗磨性好，并且具有良好的泵送性，粘附性，密封性。
为了解决上述技术问题，本发明提供的盾尾密封油脂及其制备方法是这样实现的：
一种盾尾密封油脂，由以下重量份的原料制备而成的：基础油30-50份、增粘剂3-10份、纤维10-25份、透明粉25-40份、膨润土1-5份，脂肪酸盐15-30份，复合多效添加剂0.4-1份，防锈剂1-2份。
可选的，所述复合多效添加剂由多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯调制而成。
可选的，多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯的重量份数分别为：15-20份，20-25份，10-20份，20-30份，15-20份。
可选的，所述基础油为环烷烃白油、植物油或两者的混合油。
可选的，所述增粘剂是聚异丁烯、乙丙胶或两者的混合物。
可选的，所述纤维是木质纤维、化学纤维或复合纤维。
可选的，所述脂肪酸盐是锂基脂、钙基脂或两者的混合物。
可选的，所述的防锈剂为司苯-80和二壬基萘磺酸钡T705的混合物。
可选的，所述司苯-80和二壬基萘磺酸钡T705重量份数分别为：40-45份和50-55份
盾尾密封油脂的制备方法，将基础油30-40份和增粘剂3-8份混合搅拌并加热，温度升至80-90℃时停止加热，待两者混合均匀后依次加入脂肪酸盐16-28份，纤维10-20份、透明粉28-35份、膨润土2-4份，均匀搅拌60-90min后挤压成型，然后加入复合多效添加剂和防锈剂搅拌均匀即可。
本发明提供的原料配比和制备方法制得的盾尾密封油脂，其具有良好的极压抗磨性和密封性，良好的粘附性，良好的抗水冲性，良好的泵送性，良好的工作稳定性。同时该盾尾密封油脂安全环保，可以避免盾构推进施工中对土壤和水的污染。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
实施例一
将30g环烷基白油和5g聚异丁烯加入搅拌容器中，搅拌并加热升温到80-90℃，停止加热，在搅拌的过程中依次加入31.6g透明粉，11g复合纤维，3g膨润土，16g钙基脂，继续均匀搅拌60min后挤压成型，然后加入0.4g复合多效添加剂和1g防锈剂搅拌均匀。
复合多效添加剂由多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯调制而成；其中多乙烯多胺16份，苯骈三氮锉23份，二烷基硫代磷酸锌15份，叔辛醇25和苯二甲酸二辛酯17；防锈剂为司苯-80 47份和二壬基萘磺酸钡T705 53份。
实施例二
将40g环烷基白油和8g乙丙胶加入搅拌容器中，搅拌并加热升温到80-90℃，停止加热，在搅拌的过程中依次加入28g透明粉，20g木质纤维，4g膨润土，28g锂基脂，继续均匀搅拌60min后挤压成型，然后加入1g复合多效添加剂和1.5g防锈剂搅拌均匀。
复合多效添加剂由多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯调制而成；多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯的重量份数分别为：15份，25份，20份，18份和22份。
防锈剂为司苯-80和二壬基萘磺酸钡T705，所占重量份数分别为：45份和55份。
实施例三
将35g植物油和3g聚异丁烯加入搅拌容器中，搅拌并加热升温到80-90℃，停止加热，在搅拌的过程中依次加入35g透明粉，10g化学纤维，2g膨润土，20g锂基脂，继续均匀搅拌60min后挤压成型，然后加入0.8g复合多效添加剂和1.2g防锈剂搅拌均匀。
复合多效添加剂由多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯调制而成；多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯的重量份数分别为：20份，23份，17份,20份和20份。
防锈剂为司苯-80和二壬基萘磺酸钡T705，所占重量份数分别为：48份和52份
实施例四
将35g植物油和环烷基白油混合物与3g聚异丁烯加入搅拌容器中，搅拌并加热升温到80-90℃，停止加热，在搅拌的过程中依次加入31g透明粉，15g化学纤维和木质纤维组成的复合纤维，3g膨润土，22g锂基脂和钙基脂混合物，继续均匀搅拌60min后挤压成型，然后加入0.8g复合多效添加剂和1.2g防锈剂搅拌均匀。
复合多效添加剂由多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯调制而成；多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯的重量份数分别为：18份，25份，18份，24份和15份。
防锈剂为司苯-80和二壬基萘磺酸钡T705，所占重量份数分别为：47份和53份
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

1.一种盾尾密封油脂，其特征在于，由以下重量份的原料制备而成的：基础油30-50份、增粘剂3-10份、纤维10-25份、透明粉25-40份、膨润土1-5份，脂肪酸盐15-30份，复合多效添加剂0.4-1份，防锈剂1-2份。
2.根据权利要求1所述的盾尾密封油脂，其特征在于，所述复合多效添加剂由多乙烯多胺，苯骈三氮锉，二烷基硫代磷酸锌，叔辛醇和苯二甲酸二辛酯调制而成。
3.根据权利要求2所述的盾尾密封油脂，其特征在于，所述复合多效添加剂中多乙烯多胺所占重量份为15-20份，苯骈三氮锉20-25份，二烷基硫代磷酸锌10-20份，叔辛醇20-30份和苯二甲酸二辛酯15-20份。
4.根据权利要求1所述的盾尾密封油脂，其特征在于，所述基础油为环烷烃白油、植物油或两者的混合油。
5.根据权利要求1所述的盾尾密封油脂，其特征在于，所述增粘剂是聚异丁烯、乙丙胶或两者的混合物。
6.根据权利要求1所述的盾尾密封油脂，其特征在于，所述纤维是木质纤维、化学纤维或复合纤维。
7.根据权利要求1所述的盾尾密封油脂，其特征在于，所述脂肪酸盐是锂基脂、钙基脂或两者的混合物。
8.根据权利要求1所述的盾尾密封油脂，其特征在于，所述的防锈剂为司苯-80和二壬基萘磺酸钡T705的混合物。
9.根据权利要求8所述的盾尾密封油脂，其特征在于，所述防锈剂中司苯-80所占重量份为45-50份，二壬基萘磺酸钡T705所占重量份数为50-55份。
10.权利要求1所述的盾尾密封油脂的制备方法，其特征在于，将基础油30-40份和增粘剂3-8份混合搅拌并加热，温度升至80-90℃时停止加热，待两者混合均匀后依次加入脂肪酸盐16-28份，纤维10-20份、透明粉28-35份、膨润土2-4份，均匀搅拌60-90min后挤压成型，然后加入复合多效添加剂和防锈剂搅拌均匀即可。
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CN110218604A (zh) * 2019-06-25 2019-09-10 北京市政建设集团有限责任公司 一种稳定型盾尾密封油脂及其制备方法

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CN108865372B (zh) * 2018-08-01 2021-07-30 中铁四局集团有限公司 一种环保型盾尾密封油脂及其制备方法
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