Environment-friendly shield tail sealing grease and preparation method thereof

A shield tail sealing and environment-friendly technology, applied in the petroleum industry, lubricating composition, etc., can solve the problems of poor sealing performance, large amount of sand layer, environmental pollution, etc., achieve good lubricity, good environmental protection performance, and simple preparation scheme Effect
CN110684582AInactive Publication Date: 2020-01-14NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Publication Date
2020-01-14
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention belongs to the technical field of shield tail sealing greases and in particular discloses an environment-friendly shield tail sealing grease and a preparation method thereof. The environment-friendly shield tail sealing grease comprises raw materials of base oil, a viscosity improver, an extreme pressure lithium base grease, calcium carbonate powder and a reinforcing fiber. The preparation method of environment-friendly shield tail sealing grease specifically comprises the following steps: S1, stirring and mixing the base oil, the extreme pressure lithium base grease and the viscosity improver, namely weighing the base oil, the extreme pressure lithium base grease and the viscosity improver in accordance with a weight ratio, and putting the components into a kneading machine;S2, adding calcium carbonate powder into the kneaded mixture, and performing continue mixing; and S3, adding the reinforcing fiber, so as to obtain a finished product. The raw materials are the baseoil, the viscosity improver, the extreme pressure lithium base grease, the calcium carbonate powder and the reinforcing fiber, the raw materials are common and low in cost, the finished product is good in lubricity, good in sealing effect, good in oxidation resistance and good in environmental performance., and the preparation scheme is simple and fast.
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Description

technical field

[0001] The invention relates to the technical field of shield tail sealing grease, in particular to an environment-friendly shield tail sealing grease and a preparation method thereof. Background technique

[0002] A shield machine is a tunnel boring machine that uses the shield method. The construction method of shield tunneling is the "shield" (referring to the supporting segment) of the tunnel constructed (laid) by the roadheader while excavating, which is different from the open construction method.

[0003] Internationally, the generalized shield machine can also be used in rock formations, but it is different from the open (non-shield method) tunnel boring machine. In our country, it is customary to call the tunnel boring machine used in soft soil formations (narrow sense) shield machine, and the one used in rock formations is called (narrow sense) TBM.

[0004] According to the working principle, the shield machine is generally divided into hand-exca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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