Preparation method for seawater corrosion resistant type self-lubricating material

A self-lubricating material, seawater-resistant technology, applied in metal processing equipment, coating, transportation and packaging, etc., can solve the problems of passivation loss, reduce the lubrication efficiency of self-lubricating materials, etc., to reduce the lubrication coefficient and enhance the corrosion resistance , Improve the effect of lubrication efficiency

Inactive Publication Date: 2017-06-13
仇颖莹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: Aiming at the defects that existing nickel-based self-lubricating materials are easily covered by sediments in seawater, resulting in the loss of passivation and pitting corrosion, and reducing the lubrication efficiency of self-lubricating materials, a kind of The method of forming a lubricating protective layer and improving the lubrication efficiency through frictional melting of polyethylene wax, the present invention cracks polyethylene and collects polyethylene wax, and then deposits a layer of nickel layer on the surface of polyethylene wax through electrodeposition, and then Copper is replaced and coated on the nickel surface to form a double-coated structure. During the self-lubricating process, due to friction, the self-friction material breaks, releasing the inner layer of polyethylene wax, and then absorbs the high temperature generated by friction through the polyethylene wax It is melted and coated on the surface of the self-lubricating material copper-nickel composite to form a layer of lubricating protective film, which can effectively prevent pitting caused by the deposition of pollutants in seawater while improving the lubrication efficiency, and improve the lubrication efficiency of the self-lubricating material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First, according to the mass ratio of 1:20, stir and mix 200-mesh zeolite powder and polyethylene particles, stir and mix at 600r / min for 10min, collect the mixed material, then put the mixed material in the cracking tank, and put the cracking tank in the cracking tank In the furnace, ventilate nitrogen to remove air, heat up to 200°C, keep warm and melt for 150min, then raise the temperature to 350°C at a rate of 5°C / min, and thermally crack for 3h; after the thermal cracking is completed, let it stand and cool to 120°C, and collect the molten polyethylene Wax, in parts by weight, respectively weigh 5 parts of molten polyethylene wax, 60 parts of deionized water and 15 parts of dodecyl dimethyl benzyl ammonium chloride, place them in a beaker, stir and mix and place at 130 °C Heat in an oil bath, control the stirring speed to 1200r / min, stir and mix for 25 minutes, then ultrasonically disperse at 200W for 15 minutes, then let it stand and cool to room temperature, filte...

example 2

[0019] First, according to the mass ratio of 1:20, stir and mix 200-mesh zeolite powder and polyethylene particles, stir and mix at 700r / min for 12min, collect the mixed material, then put the mixed material in the cracking tank, and place the cracking tank in the cracking tank In the furnace, ventilate nitrogen to remove the air, heat up to 250°C, keep warm and melt for 17 minutes, then raise the temperature to 375°C at a rate of 5°C / min, and perform thermal cracking for 4 hours; after the thermal cracking is completed, let it stand and cool to 125°C, and collect the molten polyethylene Wax, in parts by weight, respectively weigh 7 parts of molten polyethylene wax, 65 parts of deionized water and 17 parts of dodecyl dimethyl benzyl ammonium chloride, place them in a beaker, stir and mix and place at 135 °C Heat in an oil bath, control the stirring speed to 1250r / min, stir and mix for 27 minutes, then ultrasonically disperse at 250W for 17 minutes, then let it stand and cool to...

example 3

[0022] First, according to the mass ratio of 1:20, stir and mix 200-mesh zeolite powder and polyethylene particles, stir and mix at 800r / min for 15min, collect the mixed material, then put the mixed material in the cracking tank, and put the cracking tank in the cracking tank In the furnace, ventilate nitrogen to remove air, heat up to 300°C, keep warm and melt for 20 minutes, then heat up to 400°C at a rate of 5°C / min, and thermally crack for 5 hours; after the thermal cracking is completed, let it stand and cool to 130°C, and collect the molten polyethylene Wax, in parts by weight, weigh 10 parts of molten polyethylene wax, 70 parts of deionized water and 20 parts of dodecyl dimethyl benzyl ammonium chloride respectively in a beaker, stir and mix and place at 140 °C Heat in an oil bath, control the stirring speed to 1300r / min, stir and mix for 30min, then ultrasonically disperse at 300W for 20min, then let stand and cool to room temperature, filter and collect the filter cake...

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PUM

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Abstract

The invention discloses a preparation method for a seawater corrosion resistant type self-lubricating material, and belongs to the technical field of self-lubricating material preparation. The preparation method is characterized in that polyethylene is cracked and polyethylene wax is collected; a nickel basal body layer is deposited on a polyethylene wax surface layer through the electro-deposition effect; copper is replaced and covered to a nickel surface, so that a double-layer clad structure is formed; in a self-lubricating process, a self-friction material is cracked as a result of the friction effect to release inner-layer polyethylene wax; a high temperature generated by friction is absorbed by the polyethylene wax, so that the polyethylene wax is molten and coated to the surface of a self-friction material copper-nickel composite, and therefore, a lubricating protective film layer is formed; and while lubricating efficiency is improved, point corrosion caused by deposition of pollutants in seawater is effectively prevented, and lubricating efficiency of the self-lubricating material is improved.

Description

technical field [0001] The invention discloses a preparation method of a seawater corrosion-resistant self-lubricating material, which belongs to the technical field of self-lubricating material preparation. Background technique [0002] The ocean covers more than 70% of the Earth's surface area and is also the most abundant natural electrolyte. Seawater is an electrolyte containing a certain amount of salt, and metal materials will inevitably undergo electrochemical corrosion in it. However, because the ocean has tides, wave motion and spray splashes, as well as marine organisms and entrained sediment, the actual situation is much more complicated than the corrosion of a static electrolyte solution containing the same salt. In marine environments, the most common types of corrosion are general corrosion, galvanic corrosion, pitting corrosion, crevice corrosion, and cavitation corrosion. Factors affecting the corrosivity of seawater can be divided into chemical factors, ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02C25D7/00C25D3/12
CPCC25D3/12C25D7/00B22F1/17
Inventor 仇颖莹韩彪
Owner 仇颖莹
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