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Aqueous epoxy adhering dried fim lubricant

A dry film lubricant, water-based epoxy technology, applied in lubricating compositions, etc., to reduce component wear, low pollution, and reduce friction

Inactive Publication Date: 2003-10-22
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 Embodiment 1

[0035] [Example] Example one, the present invention provides a better formula:

[0036] Component Weight Fraction

[0037] 100 parts epoxy resin

[0038] Curing agent 20 parts

[0039] One or more of polytetrafluoroethylene / molybdenum disulfide / graphite 30 parts

[0040] One of chromium oxide, copper oxide or aluminum oxide 10 parts

[0041] Attapulgite 2 parts

[0042] Melamine urea complex 0 parts

[0043] Sodium dodecyl sulfonate 2 parts

[0044] Sodium nitrite 1 part

[0045] 100 parts of diluent (water or water / ethanol) embodiment two, the present invention provides a kind of better formula:

[0046] Component Weight Fraction

[0047] 100 parts epoxy resin

[0048] Curing agent 50 parts

[0049] One or more of polytetrafluoroethylene / molybdenum disulfide / graphite 80 parts

[0050]One of chromium oxide, copper oxide or aluminum oxide 140 parts

[0051] Attapulgite 10 parts

[0052] Melamine urea complex 30 parts

[0053] Sodium dodecyl sulfonate 5 parts

[0...

Embodiment 1

[0057] 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

[0059] 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.

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Abstract

The present invention relates to a water epoxy adhesive dry film lubricant with low-volatile organic compound. Its formula is composed of (by weight portion) 100 portions of epoxy resin, 20-50 portions of solidifying agent, 30-80 portions of one of teflon, molybdenum disulfide and graphite or several kinds of them, 10-40 portions of one of chrome oxide, copper oxide or aluminium oxide, 2-10 portions of attapulgite, 0-30 portions of melamine urea complex, 2-5 portions of sodium dodecanesulfonate, 1-4 portions of sodium nitrate and 100-400 portions of diluting agent (water or water / ethyl alcohol). As compared with existent technology said lubricant can be solidified, and has the characteristics of low pollution and long life, etc. can be used as lubricant wear-resistant coating layer of various slide frictioning components

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. [technical background] [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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IPC IPC(8): C10M145/26C10M171/00
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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