A multi-component nanocomposite of ultra-high molecular weight polyethylene suitable for water lubrication

A technology of ultra-high molecular weight and composite materials, which is applied in the field of ultra-high molecular weight polyethylene multi-component nano-composite materials, can solve the problems of inability to promote high load-carrying capacity and passivation capacity reaction boundary film, etc., achieve good wear resistance, improve performance, The effect of increasing the formation speed

Active Publication Date: 2019-12-06
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional ceramic particles with high chemical stability cannot promote the formation of reactive boundary films with high load-carrying capacity and passivation capacity at the friction interface

Method used

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  • A multi-component nanocomposite of ultra-high molecular weight polyethylene suitable for water lubrication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Heat 4.0g of hexagonal boron nitride in 2.0mol / L sodium hydroxide solution at 100°C for 2 hours, filter it out, add 100ml of 2.0mol / L 3-chloropropyltrimethoxysilane acetone solution, and stir at 50°C for 16 hours , through conventional separation to obtain the treated hexagonal boron nitride; 4.0g treated hexagonal boron nitride, 20.0mg cuprous chloride, 40.0mg2, 2 bipyridine and 200ml12mol / L1-vinyl-3-ethylimidazole tetrafluoro The dimethylformamide solution of borate was mixed and stirred, and reacted at 50° C. for 12 hours under a nitrogen atmosphere to obtain hexagonal boron nitride grafted with 1-vinyl-3-ethylimidazolium tetrafluoroborate.

[0027] 32.4g of ultra-high molecular weight polyethylene, 6.8g of carbon fiber and 3.3g of hexagonal boron nitride grafted with 1-vinyl-3-ethylimidazolium tetrafluoroborate were carried out in a high-speed mixer at a speed of 10000r / min Mix well, then transfer to a 50mm×60mm mold for hot pressing and sintering, rise the room tem...

Embodiment 2

[0029] Heat 3.0g of hexagonal boron nitride in a 2.0mol / L sodium hydroxide solution at 120°C for 1.5 hours, filter it out, add 100ml of 1.5mol / L 3-chloropropyltrimethoxysilane acetone solution, and stir at 55°C for 18 Hours, the processed hexagonal boron nitride was obtained by conventional separation; 3.0g processed hexagonal boron nitride, 15.0mg cuprous chloride, 30.0mg2, 2 bipyridine and 200mL10.0mol / L1-vinyl-3-ethyl The dimethylformamide solution of imidazolium tetrafluoroborate was mixed and stirred, and reacted at 55°C for 16 hours under nitrogen atmosphere to obtain hexagonal boron nitride grafted with 1-vinyl-3-ethylimidazolium tetrafluoroborate .

[0030] 28.5g of ultra-high molecular weight polyethylene, 6.1g of carbon fiber and 2.8g of hexagonal boron nitride grafted with 1-vinyl-3-ethylimidazolium tetrafluoroborate were fully mixed at a speed of 10000r / min in a high-speed mixer. Mixed, then transferred to a 50mm×60mm mold for hot-pressing sintering, the room temp...

Embodiment 3

[0032] Heat 2.5g of hexagonal boron nitride in 2.0mol / L sodium hydroxide solution at 120°C for 3 hours, filter it out, add 100ml of 1.25mol / L 3-chloropropyltrimethoxysilane acetone solution, and stir at 50°C for 20 Hours, the processed hexagonal boron nitride was obtained by conventional separation; 2.5g processed hexagonal boron nitride, 12.5mg cuprous chloride, 37.5mg 2,2 bipyridine and 200ml8.0mol / L1-vinyl-3-ethane The dimethylformamide solution of imidazole tetrafluoroborate was mixed and stirred, and reacted at 50°C for 18 hours under nitrogen atmosphere to obtain hexagonal nitriding grafted with 1-vinyl-3-ethylimidazole tetrafluoroborate boron.

[0033]25.4g of ultra-high molecular weight polyethylene, 6.0g of carbon fiber and 2.3g of hexagonal boron nitride grafted with 1-vinyl-3-ethylimidazolium tetrafluoroborate were carried out in a high-speed mixer at a speed of 12000r / min Mix well, then transfer to a 50mm×60mm mold for hot-pressing and sintering, the room temperat...

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Abstract

The invention discloses an ultrahigh molecular weight polyethylene multi-element nanocomposite applicable to the water lubrication condition. While reinforcing fiber is added into an ultrahigh molecular weight polyethylene material, nano-particles with the modified surface and the friction hydrolysis performance are added. The nanocomposite has the good wear-resisting performance under the water lubrication condition, when the nanocomposite is used in a seawater medium, a boundary film on a friction interface can effectively protect a metal pairing surface while abrasion of the polymer composite is lowered, and the metal corrosion wear is lowered.

Description

technical field [0001] The invention relates to an ultra-high molecular weight polyethylene multi-component nanocomposite material suitable for use under water lubrication conditions, and belongs to the technical field of lubrication. Background technique [0002] With the improvement of people's awareness of ecological environment protection, using water instead of mineral oil or synthetic oil as a lubricant is an effective solution to reduce water pollution caused by oil spills. However, due to the low viscosity of water and the poor bearing capacity of the water film, the water-lubricated friction pair is not always in an ideal fluid lubrication state. In the start-stop state and low-speed, heavy-load conditions, the friction pair is often in the state of mixed lubrication or even boundary lubrication, and the solid-solid contact bears the main or even most of the load, so it also poses a challenge to the tribological properties of the material. Due to their excellent pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10M143/02C10N30/06C10N30/12
CPCC10M143/02C10M169/044C10M2201/041C10M2201/14C10M2205/022C10N2030/06C10N2030/12
Inventor 张嘎齐慧敏李贵涛许永坤王廷梅王齐华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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