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Aqueous epoxy adhering dried film lubricant

A dry film lubricant, water-based epoxy technology, used in lubricating compositions, additives, petroleum industry, etc., to achieve low pollution, reduce component wear, and reduce friction.

Inactive Publication Date: 2006-10-11
上海高分子材料研究开发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the past technology, the adhesives of dry film lubricants mostly use organic solvents. Based on the volatility, flammability, and the pollution of the environment caused by the odor and toxicity of organic solvents, there is an urgent need to develop water-based epoxy adhesives that are more suitable for the environment. Junction Lubricating Dry Film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Weigh 100 parts of epoxy resin, 40 parts of polytetrafluoroethylene, 15 parts of molybdenum disulfide, 15 parts of chromium oxide, 8 parts of attapulgite, 25 parts of melamine urea complex, 6 parts of sodium dodecylsulfonate, Add 2 parts of sodium nitrite, add water diluent, grind and mix in a glass mortar, disperse in a conical mill, add 40 parts of water-based curing agent, stir evenly with a magnetic stirrer, and then become a dry film lubricant spray. Under 0.2-0.3MPa air pressure, spray the dry film lubricant spray on the sandblasted stainless steel surface, and leave it for 7 days to cure naturally. The prepared dry film coating is 40-50 μm, the bonding strength is grade 1, the friction coefficient is 0.16-0.18, the abrasion is 243m / μm, the impact resistance is 60, and there is no obvious corrosion phenomenon after being placed in humid air for one year.

Embodiment 2

[0060] Weigh 100 parts of epoxy resin, 30 parts of polytetrafluoroethylene, 12 parts of copper oxide, 6 parts of attapulgite, 6 parts of sodium dodecylsulfonate, 1 part of sodium nitrite, add water / ethanol diluent in the glass After grinding and mixing in a mortar, disperse in a conical mill, add 35 parts of water-based curing agent, stir evenly with a magnetic stirrer, and then become a dry film lubricant spray. Under 0.2-0.3MPa air pressure, spray the dry film lubricant spray on the sanded stainless steel surface, and leave it for 7 days to cure naturally. The prepared dry film coating has a thickness of 30-40 μm, a bonding strength of grade 2, a friction coefficient of 0.16-0.19, and an abrasion of 281 m / μm.

Embodiment 3

[0062] Weigh 100 parts of epoxy resin, 20 parts of polytetrafluoroethylene, 30 parts of graphite, 10 parts of alumina, 8 parts of attapulgite, 8 parts of sodium dodecylsulfonate, 1 part of sodium nitrite, add water diluent After grinding and mixing in a glass mortar, disperse in a conical mill, add 40 parts of water-based curing agent, and stir evenly with a magnetic stirrer to become a dry film lubricant spray. Under the pressure of 0.2-0.3MPa, spray the dry film lubricant spray on the surface of the anodized aluminum alloy, and leave it for 7 days to cure naturally. The prepared dry film coating has a thickness of 40-50 μm, a bonding strength of grade 1, a friction coefficient of 0.17-0.19, and an abrasion of 329 m / μm.

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PUM

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Abstract

The invention relates to a water-based epoxy bonding dry film lubricant with low volatile organic compounds, which is composed of epoxy resin, curing agent, solid lubricant, anti-wear agent, anti-settling agent, anti-rust agent, diluent, etc. , solid lubricants, wear-resistant additives, diluents, etc., characterized in that the formula consists of: (parts by weight) 100 parts of epoxy resin; 20-50 parts of curing agent; polytetrafluoroethylene / disulfide / graphite 30-80 parts of one or several kinds; 10-40 parts of one of chromium oxide, copper oxide or aluminum oxide; 2-10 parts of attapulgite; 0-30 parts of melamine urea complex; dodecylsulfonic acid 2-5 parts of sodium; 1-4 parts of sodium nitrite; 100-400 parts of diluent (water or water / ethanol). Compared with the prior art, the dry film lubricant of the present invention can be solidified at room temperature, and has the characteristics of low pollution, long life and the like. It can be used as a lubricating and wear-resistant coating for sliding friction parts such as guide rails, pin shafts, sliding bearings, office machinery, etc., to reduce friction and reduce wear and tear of parts.

Description

[technical field] [0001] The present invention relates to waterborne epoxy bonded dry film lubricants having low VOCs. The object is to provide a water-based epoxy bonded dry film lubricant suitable for lubricating coatings, and provide corresponding preparation and use methods. This dry film lubricant is characterized by low contamination, room temperature cure, and good friction and wear properties. [Background technique] [0002] Dry film lubricant is one of the most commonly used forms of solid lubricating materials. It is usually composed of resin binder, solid lubricant, wear-resistant additives and modifiers. Dry film lubricant is coated on metal or non-metal A lubricating coating with good tribological properties can be formed on the substrate. Because of its simple use and convenient construction, it can be applied to almost all surfaces of friction parts. Because this solid lubricating film can provide effective lubrication in special and harsh environments such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M145/26C10M145/22C10M171/00C10M173/00C10M173/02C10M103/02C10M125/10C10M125/02C10M105/18
Inventor 李同生吕仁国刘旭军
Owner 上海高分子材料研究开发中心
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