Method for preparing graphite oxide/macromolecular water-based cold rolling lubricating additive

A technology of lubricating additives and polymers, applied in the direction of additives, lubricating compositions, petroleum industry, etc., can solve the problems of short service life of cold rolling fluid, large amount of residual carbon, residual iron, poor lubricating performance, etc. Rust level, good lubricating performance, and the effect of improving anti-friction performance

Inactive Publication Date: 2011-05-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is in order to provide a kind of preparation method of graphite oxide/macromolecule water-based lubricating additive for cold rolling, which solves the problem

Method used

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  • Method for preparing graphite oxide/macromolecular water-based cold rolling lubricating additive
  • Method for preparing graphite oxide/macromolecular water-based cold rolling lubricating additive
  • Method for preparing graphite oxide/macromolecular water-based cold rolling lubricating additive

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Example Embodiment

[0014] Specific embodiment 1: This embodiment is a preparation method of graphite oxide / polymer water-based cold rolling lubricating additive, which is realized by the following steps: 1. Put the graphite oxide in deionized water, ultrasonically disperse for 30-60 minutes, and then The graphite oxide suspension was added to the mixture of thionyl chloride and toluene, and then refluxed for 1 to 5 days under nitrogen protection and 50-100°C, and then centrifuged. The supernatant was discarded and the precipitated product was heated at 70 Vacuum drying at ~100℃ for 12~48h to obtain acyl chloride graphite, wherein the ratio of graphite oxide mass to the volume of the mixed solution is 1g:600~1000mL, and the volume ratio of thionyl chloride and toluene in the mixed solution is 1~2: 1. 2. Add the graphite acyl chloride and water-soluble polymer compound prepared in step 1 to N,N-dimethylformamide, and then ultrasonically disperse for 2~5h, and then react at 80~150℃ for 1~3 Day, wher...

Example Embodiment

[0018] Specific embodiment two: this embodiment is different from specific embodiment one in that the graphite oxide described in step one is realized by the following steps: adding 5-50g of dried graphite to 250-2500mL concentrated sulfuric acid and 5-50g nitric acid In the salt mixture, after mixing uniformly, add 30~300g potassium-containing strong oxidant while stirring, keep at 30~60℃ for 4~12 hours, then add 400~4000mL deionized water and keep at 60~80℃ Continue at temperature for 30-60 minutes, then add 500-5000mL of deionized water and 30-300mL of hydrogen peroxide with a mass concentration of 20%-40%, stir and react for 10-30 minutes, then rinse and filter the reactants with deionized water. Until the pH of the filtrate is 5-7, the product is dried in a vacuum drying oven at 40-80°C for 12-48 hours to obtain graphite oxide. Other steps and parameters are the same as in the first embodiment.

[0019] The TEM photograph of the graphite oxide prepared in this embodiment is...

Example Embodiment

[0020] Specific embodiment three: This embodiment is different from specific embodiment two in that the potassium-containing strong oxidant is potassium permanganate or potassium perchlorate. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention discloses a method for preparing a graphite oxide/macromolecular water-based cold rolling lubricating additive, and relates to a method for preparing a graphite oxide-based lubricating additive. The method solves the problems that the conventional cold rolling liquid has short service life, is easy to settle and break emulsion and has poor lubricating performance, poor anti-rust level, high viscosity and high residual carbon quantity and residual iron quantity. The method comprises the following steps of: adding graphite oxide into mixed solution of thionyl chloride and methylbenzene, performing reflux reaction to obtain graphite acetyl chloride, then adding the graphite acetyl chloride and water-soluble macromolecules into N,N-dimethyl formamide to react, drying the reaction system, dispersing the dried product into water, then adding ethanol to obtain sediment, and drying the sediment. The molecular structure of the water-based cold rolling lubricating additive has flexible polymer molecular chains, so the anti-friction performance of the lubricating additive is improved; the lubricating additive forms stable solution in water, and the solution has low viscosity, is not easy to settle and has long service life; and the lubricating additive has good anti-rust level and low residual carbon quantity and residual iron quantity. Through the water-based cold rolling lubricating additive, the friction spot diameter of the base liquid is reduced by 26.2 percent.

Description

technical field [0001] The invention relates to a preparation method of a graphite oxide-based lubricating additive. Background technique [0002] In recent years, my country's steel consumption has grown rapidly and has become the world's largest steel market. Since China's annual steel output exceeded 100 million tons in 1996, it has become the world's largest steel producer for 14 consecutive years. In the production of steel, cold-rolled steel strip occupies a considerable proportion and is widely used in the fields of automobile industry, machinery manufacturing, hardware products, home decoration and so on. Although the output of cold-rolled steel strip in my country is high, the product structure is low and the ratio of high-quality steel is low, which cannot meet market demand. High value-added products such as cold-rolled thin plates, cold-rolled stainless steel sheets, and cold-rolled silicon steel sheets still rely heavily on imports. In the cold rolling indust...

Claims

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Application Information

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IPC IPC(8): C10M159/12C10M177/00C10N40/24C10N30/06C10N30/12
Inventor 胡桢黄玉东孙少凡姚宇环姜再兴徐慧芳
Owner HARBIN INST OF TECH
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