Sealing grease and preparation method and application thereof

A technology of sealing grease and base oil, which is applied in the petroleum industry, additives, lubricating compositions, etc., can solve the problems of poor pumpability, affecting the application of sealing grease, affecting the use of sealing grease, etc., and achieves strong water resistance and high work efficiency High, the effect of improving production efficiency

Active Publication Date: 2010-09-15
上海翔威环境科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing grease used in the prior art has poor pumpability at low temperatures, which affects the use of the sealing grease, especially the application of the sealing grease when sealing the shield tail

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The ratio by weight percentage is: oleic acid ester 23.5%, bentonite grease 13%, silicone resin 7%, polybutene 8%, bamboo fiber 11.5%, bamboo fiber length 0.5 mm to 1 mm; zinc oxide 20% , titanium oxide 17%; the particle size range of zinc oxide and titanium oxide is 100 microns to 150 microns.

[0045] The preparation method is as follows: first, put oleic acid ester, bentonite grease, silicone resin and polybutene into the mixer and mix them, raise the temperature to 55°C and stir well to make them evenly mixed, add bamboo fiber, keep stirring for 40-60 minutes, and then add oxidation Zinc and titanium oxide, heat preservation and stirring for 90 minutes.

Embodiment 2

[0047]The ratio by weight percentage is: dodecylbenzene 24.8%, sodium-based grease 12.0%, melamine resin 15.0%, glass fiber 10.2%, glass fiber length 2 mm to 3 mm, zinc sulfate 38.0% zinc sulfate particles The diameter ranges from 300 microns to 400 microns.

[0048] The preparation method is: put dodecylbenzene, sodium-based lubricating grease, and melamine resin into the mixer for mixing, heat to 70°C and stir to make it evenly mixed, add glass fiber, add zinc sulfate after 50 minutes of heat preservation and stirring, heat preservation and stirring Sealing grease can be obtained after 120 minutes.

[0049] The adhesiveness of the sealing grease obtained in the example of the present invention is significantly enhanced, and has strong sealing performance and water pressure resistance, especially at low temperatures, it still maintains good pumpability.

Embodiment 3

[0051] The ratio by weight percentage is: naphthenic oil N50 24.2%, silicone grease 14.8%, styrene acrylate copolymer resin 16.0%, bast fiber 11.0%, bast fiber length 4 mm to 5 mm barium carbonate 34 %, the barium sulfate particle size ranges from 50 microns to 100 microns.

[0052] Add naphthenic oil N50, silica gel grease, styrene acrylate copolymer resin into the mixer and mix, raise the temperature to 95°C and stir well to make it evenly mixed, add bast fiber, keep stirring for 50 minutes, then add barium carbonate, After heat preservation and stirring for 170 minutes, the sealing grease can be obtained.

[0053] Embodiment 1-3 product quality detection index of the present invention is as follows:

[0054] serial number

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Abstract

The invention discloses sealing grease, which is characterized by comprising the following components in percent by weight: 20 percent to 30 percent of base oil, 8 percent to 14 percent of fibers, 12 percent to 20 percent of tackifier, 10 percent to 18 percent of stabilizer and balance of powder filler. Compared with other like products, the sealing grease has the following advantages: (1) the low-temperature performance is excellent, i.e. tail sealing grease can be used in the northeastern area of China at the temperature of minus 20 degrees or so, and the grease does not harden or cake and keeps excellent pumpability; and (2) the sealing performance is strong, i.e. at normal temperature, the grease can bear the pressure of 0.80MPa, grease leakage and water leakage do not occur, and the grease shows excellent water resistance and water jet resistance.

Description

technical field [0001] The invention relates to a sealing grease for sealing, its preparation method and application. Background technique [0002] Shield tunneling is a construction machine tool for tunnel construction, it can play the role of support when excavating the ground and assembling the lining. With the development of underground space, shield technology has been widely used in engineering fields such as subways, tunnels, and municipal pipelines in soft soil layers. At present, in the urban construction with increasing number of underground projects, the shield construction method has become a commonly used construction method. In order to meet the needs of different projects, there are more and more forms of shield machines. At present, circular, rectangular, double-circle, three-circle, spherical shields, mother-to-child shields, etc. have been produced, and the size also varies from diameter to 200mm to 18m. In the 21st century, my country's urban undergroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10N40/34C10N30/08C10N50/10
Inventor 洪显忠叶进春魏彩虹张岚
Owner 上海翔威环境科技集团有限公司
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