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Inorganic air-drying solid lubricant for coupling

A solid lubricant and solid lubrication technology, applied in the direction of lubricating composition, petroleum industry, etc., can solve the problems of low product cost performance, poor quality, and large environmental pollution, so as to improve product cost performance and competitive advantage, quality is difficult to control, The effect of reducing manufacturing costs

Inactive Publication Date: 2013-09-25
西安蓉湖新材料开发有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the solid lubricants mentioned above are oily thread grease products or solvent-based lubricating paint products containing heavy metals. Although they have many advantages, there are still problems in the specific implementation such as high manufacturing cost, short service life, large environmental pollution, Defects such as difficult quality control, inconvenient operation, and low cost performance of the product restrict the industrial production and application of the product to a large extent.

Method used

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  • Inorganic air-drying solid lubricant for coupling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 202g of potassium silicate with an M of 3.7 and put it into an ultrasonic machine tank, add 20ml of water, heat to 55°C, add 88g of silica sol dropwise under the power-on condition, and react for 15 minutes after adding it for about 25 minutes, then add 3.5 methyltrimethoxysilane dropwise. g, add 3.5g of stabilizer 204 silicone oil, react for 45min after the addition, and then dropwise add 4.5g of modified silicone to prepare a potassium silicate solution with a modulus of 5.6.

[0032] Take 200g of the above potassium silicate solution, add 22g of 1000 mesh zinc powder and 9g of graphite, mix evenly, and spray on the petroleum coupling to obtain a long-life inorganic self-drying solid lubricant for coupling. According to the test, the number of unbuckles is more than 12 times, while the current lubricating grease is up to 6 times, that is, the anti-sticking performance has been more than doubled.

Embodiment 2

[0034] Take 100g of potassium silicate with an M of 3.7 and put it into an ultrasonic machine tank, add 10ml of water, heat to 60°C, add 50g of silica sol dropwise under the condition of starting up, and react for 15 minutes after adding it for about 20 minutes, then add γ-aminopropyl trimethyl Add 2g of oxysilane, react for 15 minutes after adding, then add 2g of stabilizer NP-10 and 2g of silicone acrylic resin to prepare a potassium silicate solution with a modulus of 6.

[0035] Take this solution as the base material, take 100g of it and add 20g of 1000 mesh zinc powder, molybdenum disulfide (MoS 2 ) 10g, mix well and then dilute with water to obtain a long-life inorganic self-drying solid lubricant for couplings. The lubricant is dip-coated on the coupling, and a solid lubricating film is obtained after curing. The coupling was subjected to the buckle-up test, and the number of buckle-ups was 13 times, four times greater than the 3 times stipulated by API.

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Abstract

The invention relates to an inorganic air-drying solid lubricant for a coupling. The inorganic air-drying solid lubricant is prepared from a high modulus potassium silicate solution with the modulus of 4.5-7.0, a zinc powder and a solid lubricant micro powder. A preparation method of the inorganic air-drying solid lubricant comprises: putting potassium silicate with the modulus of 3.6-3.7 and water into an ultrasonic machine tank or a high shear mixing emulsifying machine, starting up to heat the tank solution to 40 DEG C -70 DEG C, then dropwise adding silica sol, after reacting for 10-20 minutes, adding a coupling agent, after finishing addition, reacting for 10-35 minutes, then adding a stabilizer, carrying out mixed reaction for 40-70 minutes, and then discharging to obtain the high modulus potassium silicate solution; mixing uniformly the high modulus potassium silicate solution with the zinc powder and the solid lubricant micro powder, to obtain the inorganic air-drying solid lubricant for the coupling. Compared with the prior art, the product provided by the invention has the advantages of scientific formula, low manufacturing cost, easy control of quality, long service life, high cost performance, good lubrication and wear resistance, good environmental protection performance, easy industrialized production and the like.

Description

technical field [0001] The content of the invention belongs to the technical field of chemical coating preparations, and relates to an inorganic self-drying solid lubricant for couplings. Background technique [0002] For a long time, the problem of oil pipe sticking has always been a problem that has plagued oil fields and manufacturers of casing and oil pipes. Due to the complexity of the sticking situation, many reasons have not been clearly answered so far. Therefore, how to improve the thread quality of oil and casing The anti-sticking performance is undoubtedly of great economic significance to oil fields or manufacturers. [0003] Since the 1990s, research in this field at home and abroad has mainly focused on thread grease technology that is non-polluting to the environment and can meet the performance requirements of oil casings. With the continuous deepening of oil and gas exploration and development, the traditional oil-based thread grease can no longer meet the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10M169/04C10N50/08C10N30/06
Inventor 刘新智杜鹏岗
Owner 西安蓉湖新材料开发有限公司
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