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Preparation method of conducting lubricating grease

A technology of lubricating grease and lubricating grease additive, applied in the chemical field, can solve the problems of overheating, affecting development and social stability, threatening the safe and stable operation of the power grid, etc. Effect

Pending Publication Date: 2018-01-12
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the voltage level continues to rise and the transmission current increases, the conductor connections of important equipment such as isolating switches, circuit breakers, busbars and busbars, busbars and equipment terminals have become weak links in the power transmission process, and overheating is common. It has become a persistent disease of power grid equipment and power equipment, and in serious cases threatens the safe and stable operation of the power grid. Large-scale power outages have occurred frequently in various places, and some have even seriously affected the development of the national economy and social stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of conductive grease of the present invention may further comprise the steps:

[0027] A. Microwave-heat the expandable graphite at 1200°C for 3 minutes to heat up and expand to obtain graphite microflakes with 20 layers;

[0028] B. Mix 80 mg of the graphite microflakes in step A with 50 mL of ionic liquid, grind at 150 °C and 5 atmospheres, and the shear rate is 1000 r / min, and then ultrasonicate the suspension obtained by grinding at 100 °C 2h, centrifuge for 0.5h after the ultrasonic treatment, take the upper layer liquid, and obtain the conductive grease additive;

[0029] C. Mix 5g of the conductive grease additive in step B with 75g of PAO, 10g of complex lithium, and 5g of complex calcium sulfonate, and stir evenly to obtain conductive grease.

[0030] The ion solution contains 0.8 mol tetrafluoroborate ion and 1 mol 1-butylpyridinium ion.

Embodiment 2

[0032] The preparation method of conductive grease of the present invention may further comprise the steps:

[0033] A. Microwave-heat the expandable graphite at 1250°C for 4 minutes to locally heat up and expand to obtain graphite microflakes with 30 layers;

[0034] B. Mix 90 mg of the graphite microflakes in step A with 100 mL of ionic liquid, grind at 160 °C and 4 atmospheres, and the shear rate is 1500 r / min, and then ultrasonicate the suspension obtained by grinding at 110 °C 3h, centrifuge for 0.8h after the ultrasonic treatment, take the upper layer liquid, and obtain the conductive grease additive;

[0035] C. Mix 8g of the conductive grease additive in step B with 78g of polyether and 12g of lithium complex, and stir evenly to obtain conductive grease.

[0036] The ion solution contains 0.4 mol tetrafluoroborate ion, 0.5 mol bistrifluoromethanesulfonimide ion, and 1.1 mol 1-butyl-1-methylpyridinium ion.

Embodiment 3

[0038] The preparation method of conductive grease of the present invention may further comprise the steps:

[0039] A. Microwave-heat the expandable graphite at 1300°C for 5 minutes to locally heat up and expand to obtain graphite microflakes with 40 layers;

[0040] B. Mix 95 mg of the graphite microflakes in step A with 200 mL of ionic liquid, grind at 170 °C and 6 atmospheres, and the shear rate is 2000 r / min, and then ultrasonicate the suspension obtained by grinding at 120 °C 4h, centrifuge for 1h after the ultrasonic treatment, take the upper layer liquid, and obtain the conductive grease additive;

[0041] C. Mix 7g of the conductive grease additive in step B with 80g of mineral oil and 11g of complex calcium sulfonate, and stir evenly to obtain conductive grease.

[0042] The ion solution comprises 0.3mol tetrafluoroborate ion, 0.5mol bistrifluoromethanesulfonimide ion, 0.2mol (CF 2 SO 2 ) 2 -, 0.2mol N-butylpyridinium ion, 1mol 2,2'-bipyridine ion.

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PUM

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Abstract

The invention discloses a preparation method of conducting lubricating grease. The preparation method comprises the following steps: A, carrying out microwave heating on expandable graphite, raising temperature and expanding the expandable graphite to obtain graphite nano-sheets; B, mixing the graphite nano-sheets in step A with ionic liquid according to the dosage relation of (80mg to 120mg) to (50mL to 500mL); pressurizing and grinding the mixture at 150 DEG C to 250 DEG C; then carrying out ultrasonic treatment on suspension liquid obtained by grinding; after finishing the ultrasonic treatment, centrifuging for 0.5h to 2h; taking supernatant liquid to obtain a conducting lubricating grease additive; C, mixing the conducting lubricating grease obtained by step B with base oil and a thickener according to the ratio of (5 to 10) to (75 to 85) to (10 to 15) and uniformly mixing to obtain the conducting lubricating grease. The preparation method disclosed by the invention has the advantages of simple technological process, compact steps, less investment and low cost; the lubricating grease which has better conducting and lubricating functions at the same time is prepared.

Description

technical field [0001] The invention belongs to the field of chemistry, in particular to a preparation method of conductive lubricating grease. Background technique [0002] With the rapid development of the economy, the State Grid Corporation has put forward the strategy of "developing UHV and establishing electric highways". As the voltage level continues to rise and the transmission current increases, the conductor connections of important equipment such as isolating switches, circuit breakers, busbars and busbars, busbars and equipment terminals have become weak links in the power transmission process, and overheating is common. It has become a persistent disease of power grid equipment and power equipment, and in serious cases threatens the safe and stable operation of the power grid. Large-scale power outages have occurred frequently in various places, and some have even seriously affected the development of the national economy and social stability. [0003] Conducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/08C10N30/10C10N30/12C10N50/10C10N40/14
Inventor 周铭李虓
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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