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Preparation method of water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive

A carbon nanotube and extreme pressure lubrication technology, which is applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of poor lubricating performance, poor stability, and high cost of emulsified water-based lubricating fluid, and achieve good lubricating performance and improved Anti-friction performance, large storage effect

Active Publication Date: 2013-06-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of high cost, poor stability and poor lubricating performance of the existing emulsified water-based lubricating fluid, and provides a preparation method of water-soluble graphene oxide-carbon nanotube extreme pressure lubricating additive

Method used

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  • Preparation method of water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive
  • Preparation method of water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive
  • Preparation method of water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive

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specific Embodiment approach 1

[0016] Specific embodiment one: the preparation method of water-soluble graphene oxide-carbon nanotube extreme pressure lubrication additive in this embodiment is carried out according to the following steps:

[0017] 1. Preparation of carboxylated carbon nanotubes: Add carbon nanotubes into the mixed acid solution under stirring conditions, stir and heat to reflux for 12-48h, after cooling, centrifuge the mixed solution at a speed of 3500-4500rpm for 15-45min, The separated precipitate is washed with water until it is neutral, then suction-filtered with a 0.20-0.25 μm microporous membrane, and the filter cake is vacuum-dried at 60-90° C. to obtain carboxylated carbon nanotubes; wherein, mixing The acid solution consists of HNO with a concentration of 14-15mol / L 3 and H at a concentration of 18 to 19 mol / L 2 SO 4 It is mixed according to the volume ratio of 1:2~4, and the ratio of the mass of carbon nanotubes to the volume of the mixed acid solution is 1g:20~200mL;

[0018]...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that the ratio of the mass of carbon nanotubes to the volume of the mixed acid solution in Step 1 is 1 g: 60-160 mL. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 in that the ratio of the mass of carbon nanotubes to the volume of the mixed acid solution in Step 1 is 1 g: 110 mL. Other steps and parameters are the same as in the first embodiment.

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Abstract

The invention relates to a preparation method of a water-soluble extreme-pressure lubrication additive and concretely relates to a preparation method of a water-soluble graphene oxide-carbon nanotube extreme-pressure lubrication additive to solve technical problems of high cost, bad stability, bad lubricating property and the like of present emulsified water-soluble lubricants. The preparation method of the invention comprises the following steps: 1, carboxylated carbon nanotube preparation; 2, chloridizated carbon nanotube preparation; 3, water-soluble polymer modified carbon nanotube preparation; and 4, graphene oxide-carbon nanotube extreme-pressure lubrication additive preparation. Water-soluble lubricants prepared by adopting the extreme-pressure lubrication additive of the inventionhave the advantages of environmental pollution reduction, production cost reduction, use stability improvement, and extreme-pressure lubrication performance possessing. The extreme-pressure lubrication additive of the invention can be applied to fields of aqueous cold rolling liquids, micro mechanical lubrication and the like.

Description

technical field [0001] The invention relates to a preparation method of a water-soluble extreme pressure lubricating additive. Background technique [0002] 1 / 3-1 / 2 of the energy produced in the world is consumed in friction and wear, and about 80% of the damage to various machine parts is caused by different forms of wear. It can be seen that the economic losses caused by friction and wear cannot be ignored. Estimate. With the development of the petroleum industry, oil-based lubricant technology is becoming more and more mature, and it is widely used in various industrial sectors. The world needs to consume about 40 million tons of mineral oil for it every year, accounting for about 2% of oil production. In the late 1960s, with the world's energy crisis, water-based fluids replaced mineral oil as a lubricating medium, which aroused great concern. In the past 30 years, the increasing emphasis on environmental protection around the world has made people more inclined to wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/02C10N30/06
Inventor 胡桢黄玉东唐培毅李翠云赵生俊李群
Owner HARBIN INST OF TECH