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Preparation method and application of environment-friendly type shield tail sealing grease

An environment-friendly, shield-tail sealing technology, applied in the petroleum industry, lubricating compositions, etc., can solve problems such as poor pumpability and sealing and water-stop performance, uneven quality of sealing grease, and increased shield cost, etc., to achieve water resistance Strong pressure-tightness, excellent pumpability, and the effect of reducing clogging

Inactive Publication Date: 2014-06-18
东莞市明洁隧道建设材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, shield tail sealing grease must have good water pressure resistance, pumpability and adhesion; although the current imported shield tail sealing grease has performance advantages, it is relatively expensive at the same time, which increases the cost of shield construction. cost, while the quality of domestic sealing grease varies, and most of them have problems of poor pumpability and poor sealing performance

Method used

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  • Preparation method and application of environment-friendly type shield tail sealing grease

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specific Embodiment approach

[0015] The preferred embodiment of the environment-friendly shield tail sealing grease of the present invention is:

[0016] Including the following components according to the mass ratio: lubricating oil 14-30%, oil plasticizer 7-22%, thickener 3-15%, grease 3-12%, natural degradable fiber 3-8% %, filling granular material 35-60%, color enhancer 1-3%, preservative 0.1-2%.

[0017] Described lubricating oil is the mixture of any one or more of the following: 32 # Mechanical hydraulic oil, 46 # Mechanical hydraulic oil, 68 # Mechanical hydraulic oil, anti-wear hydraulic oil.

[0018] The oil plasticizer is any one or a mixture of the following: chlorinated paraffin-42, chlorinated paraffin-52, chlorinated paraffin-70, DOP, DBP.

[0019] The thickener is any one or a mixture of the following: PIB, OCP, HSD, PMA, coumarone resin, agar, gum arabic, rosin and its derivatives, petroleum resin, and the like.

[0020] Described lubricating grease is the mixture of any one or more...

Embodiment l

[0032] First, the 200kg 32 # Add the mechanical hydraulic oil into the heating kettle, heat up to about 80°C while stirring, then add 30kg of thickener (m(PB2400):m(5T)=l:4), continue stirring and kneading for about 1~4h to mix evenly After that, cool down to 30~50°C. Afterwards, the lubricating oil and the thickening agent that will mix homogeneously are transferred in the grease kneader, and 100kg oil product plasticizer chlorinated paraffin-42,50kg 2 # Lithium base grease, 565kg of light calcium carbonate (5:3:2 in batches) were added to the oil kneader and kneaded until uniform under stirring conditions; finally, 35kg of degradable wood fiber, 5kg of preservatives and 15kg of anatase were added Type titanium dioxide, kneading and stirring at constant temperature for 1~3h, you can get the seal tail grease.

Embodiment 2

[0034] First, the 220kg 46 # Add the mechanical hydraulic oil into the heating kettle, heat up to about 80°C while stirring, then add 50kg of thickener (m(C5):m(rosin derivative)=2:3), continue stirring and kneading for about 1~4h After mixing evenly, cool down to 30~50°C. The lubricating oil that mixes homogeneously and the thickener are transferred in the grease kneader afterwards, and the oil product plasticizer chlorinated paraffin-52, 50kg complex soap base fat of 75kg, heavy calcium carbonate 550kg (add in batches 5: 3:2) Under the condition of stirring, add it into the oil kneader and knead until uniform; finally add 35kg of degradable wood fiber, 5kg of preservative and 15kg of anatase titanium dioxide, knead and stir at constant temperature for 1~3h, and then you can get the shield Tail seal grease.

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Abstract

The invention discloses a preparation method and an application of environment-friendly type shield tail sealing grease. The shield tail sealing grease mainly comprises the following components: 14-30% of lubricating oil, 7-22% of oil plasticizer, 3-15% of thickening agent, 3-12% of lubricating grease, 3-8% of natural degradable fiber, 35-60% of filling granular material, 1-3% of coloring agent and 0.1-2% of preservative. The environment-friendly type shield tail sealing grease prepared by using the method is used for sealing a shield tail of a shield tunneling machine in tunnel engineering, and has the advantages of good water pressure sealing performance, excellent pumping performance, high adhesivity, good lubrication, stable properties, no corrosion, antioxidation, wide raw material resources, environment-friendliness and simple preparation process.

Description

technical field [0001] The invention relates to a shield tail sealing grease of a shield machine, in particular to a formulation, a preparation method and an application of an environment-friendly shield tail sealing grease. Background technique [0002] At present, the subway and rail transit are entering an unprecedented period of vigorous development. In order not to affect the built ground buildings and people's daily life, the underground engineering construction method in densely populated cities mainly adopts the shield construction method, and the main construction equipment is shield tunneling. institutions. When the shield machine is excavating, there is a gap between the shield tail and the installed segment for the shield machine to move. In order to prevent the external groundwater and the mud injected into the shield from pouring into the shield, the shield tail and the segment must be A shield tail sealing device is installed between them. [0003] Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M177/00C10N40/34C10N50/10C10N30/06C10N30/10C10N30/12
Inventor 周毅
Owner 东莞市明洁隧道建设材料有限公司
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