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Microencapsulated tungsten disulfide dry-film lubricant

A dry film lubricant, tungsten disulfide technology, applied in microcapsule preparations, lubricating compositions, microsphere preparation, etc., to achieve the effect of improving antifriction and antiwear ability, excellent dispersion stability and friction and wear performance

Inactive Publication Date: 2013-04-24
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The microcapsule technology shown in the literature has not been applied to dry film lubricant additives, especially the denser WS 2

Method used

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  • Microencapsulated tungsten disulfide dry-film lubricant
  • Microencapsulated tungsten disulfide dry-film lubricant
  • Microencapsulated tungsten disulfide dry-film lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Microencapsulation treatment of tungsten disulfide

[0029] Select tungsten disulfide particles with an average particle size of 50nm; mix ethyl cellulose and glycerin, stir and heat up to 80°C to completely dissolve ethyl cellulose in glycerin; then add tungsten disulfide particles and thio Semicarbazide, ultrasonically dispersed for 20 minutes, so that the tungsten disulfide particles are evenly dispersed in the solution. As the temperature naturally decreases, the solubility of ethyl cellulose decreases and the tungsten disulfide particles are used as nuclei to condense and precipitate, initially forming tungsten disulfide microcapsules; After cooling to room temperature, the microcapsules were solidified, and finally the tungsten disulfide microcapsules were recovered by filtration, washed with glycerin, and dried naturally at room temperature for later use.

[0030] 2. Preparation of microencapsulated tungsten disulfide dry film lubricant

[0031] Dry film lubr...

Embodiment 2

[0033] 1. Microencapsulation treatment of tungsten disulfide

[0034]Select tungsten disulfide particles with an average particle size of 120nm; mix carboxymethyl cellulose and cyclohexane, stir and heat up to 76°C to completely dissolve carboxymethyl cellulose in cyclohexane; add two Tungsten sulfide particles and thiosemicarbazide were dispersed by ultrasonic waves for 20 minutes, so that tungsten disulfide particles were evenly dispersed in the solution. As the temperature naturally decreased, the solubility of carboxymethyl cellulose decreased and condensed and precipitated with tungsten disulfide particles as nuclei. Tungsten disulfide microcapsules are formed; after cooling to room temperature, the microcapsules solidify, and finally the tungsten disulfide microcapsules are recovered by filtration, washed with cyclohexane, and dried naturally at room temperature for later use.

[0035] 2. Preparation of microencapsulated tungsten disulfide dry film lubricant

[0036] Dr...

Embodiment 3

[0038] 1. Microencapsulation treatment of tungsten disulfide

[0039] Select tungsten disulfide particles with an average particle size of 200nm; mix cellulose acetate phthalate and ethanol, stir and heat up to 80°C to completely dissolve cellulose acetate phthalate in ethanol; add two Tungsten sulfide particles and thiosemicarbazide were dispersed by ultrasonic waves for 20 minutes, so that tungsten disulfide particles were evenly dispersed in the solution. As the temperature naturally decreased, the solubility of cellulose acetate phthalate decreased and condensed and precipitated with tungsten disulfide particles as nuclei , initially formed tungsten disulfide microcapsules; after cooling to room temperature, the microcapsules were solidified, and finally the tungsten disulfide microcapsules were recovered by filtration, washed with ethanol, and dried naturally at room temperature for later use.

[0040] 2. Preparation of microencapsulated tungsten disulfide dry film lubric...

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Abstract

The invention provides a microencapsulated tungsten disulfide dry-film lubricant, belonging to the technical field of preparation of dry-film lubricants. The dry-film lubricant consists of a solid lubricant, an anti-wear additive, a dispersant, an antioxidant and an adhesive matrix, wherein the solid lubricant is microencapsulated tungsten disulfide particles prepared in a dispersing medium by using a microencapsulation technology and an oil-phase separation method, and taking a semi-synthesized polymer material with a special function as a wall material. Compared with the prior art, the microencapsulated tungsten disulfide dry-film lubricant has the advantages that the microencapsulated nano tungsten disulfide micro-particles are used for preparing the dry-film lubricant, so that the dry-film lubricant has excellent dispersion stability and wear resistance; and meanwhile, the microencapsulated nano tungsten disulfide particles can fill and level up recesses on friction surfaces, can fill up worn parts in time, have a self-repairing function to ensure that the friction surfaces are always in a relatively flat state, and improve the friction reducing and resisting capacities of dual faces.

Description

technical field [0001] The invention relates to a dry film lubricant and a preparation method thereof, in particular to a tungsten disulfide dry film lubricant and a preparation method thereof. Background technique [0002] Dry film lubrication technology is a technology that firmly bonds solid lubricants, wear-resistant additives, and other fillers on the moving friction surface with the help of binders to lubricate, reduce and protect against wear. It can be sprayed, brushed, Dip coating and other forms are applied to the friction surface and solidified to form a film. The formed film material is called a dry film lubricant. Dry film lubricants can be combined with lubricating oil, grease, paste, etc., and have been widely used in friction parts and parts requiring proper protection in aerospace, machinery, electronics, chemical, shipbuilding and other industrial sectors. [0003] New solid lubricating material tungsten disulfide (WS 2 ) has excellent high temperature re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M103/06B01J13/06C10N50/02
Inventor 田雪梅乔红斌邹李华吴胜华古绪鹏章昌华杨建国郑祎群
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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