Environment-friendly shield tail sealing grease using waste and preparation method thereof

CN121471955BActive Publication Date: 2026-08-28CHINA RAILWAY SHISIJU GROUP CORP +1
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Patent Information

Application Number
CN202511590236.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-11-03
Publication Date
2026-08-28
Estimated Expiration
2045-11-03

AI Technical Summary

Technical Problem

第一,现有的盾尾密封油脂产品往往在保证环保性能的同时牺牲一定的工作性能或成本效益

Benefits of technology

本发明的废料利用环保型盾尾密封油脂,具有良好的地层适应性,能够满足不同地层盾尾密封的需要,在施工至不同地层时,不用额外更换盾尾密封油脂。可以应用于涌沙较多的粉细砂地层、渗水程度高的砂卵石地层、以及高水压的水下地层环境;本发明的改性添加剂和填充剂能够减少砂粒对盾尾刷的摩擦,在粉细砂地层掘进施工时,能够有效减少盾尾刷的形变,避免因盾尾刷磨损变形引起的盾尾密封失效,改性有机聚硅氧烷的疏水性,能提高油脂的抗水性能,充分增强油脂对砂卵石地层、水下高水压地层的适应性。

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Abstract

The application discloses a kind of waste utilization environment-friendly shield tail sealing grease and preparation method thereof, relate to shield tail sealing grease technical field, the sealing grease is composed of base oil, fischer-tropsch wax, modified organic polysiloxane, modified xanthan gum, fiber reinforcing agent, filling agent and modified additive;The base oil is the waste edible vegetable oil after processing, and the specific processing steps include impurity removal and dehydration, deacidification, chemical modification and product purification;The waste utilization environment-friendly shield tail sealing grease of the application has good formation adaptability, can meet the needs of different formation shield tail sealing, and does not need to replace shield tail sealing grease extra when construction to different formation;The waste utilization environment-friendly shield tail sealing grease of the application uses the waste edible vegetable oil after processing as base oil, and uses the plant fiber in agriculture to prepare into reinforcing agent, and the shield tail sealing after construction will not cause impact to the soil and water body of construction section, and can be degraded subsequently, safe and environmentally friendly.
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Citation Information

Patent Citations

  • Heat-resistant punching oil

    CN107353971A

  • Environment-friendly shield tail sealing grease for high-water-pressure shield tunnel and preparation method of environment-friendly shield tail sealing grease

    CN119875725A