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Dry film lubricant based on modified epoxy resin and preparation method thereof

A dry film lubricant, epoxy resin technology, applied in epoxy resin coatings, lubricating compositions, coatings, etc., can solve the problems of weather resistance, strengthening and toughening cannot be solved at the same time, and achieve low emission and comprehensive performance. Good, simple process to prepare the effect

Active Publication Date: 2010-09-22
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current water-based epoxy dry film has the problem that weather resistance, strengthening and toughening cannot be solved at the same time

Method used

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  • Dry film lubricant based on modified epoxy resin and preparation method thereof
  • Dry film lubricant based on modified epoxy resin and preparation method thereof
  • Dry film lubricant based on modified epoxy resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] After adding 2 parts of silica nanoparticles with a particle size of 10-20nm to 0.5 part of γ-aminopropyltriethoxysilane, add 20 parts of absolute ethanol, and then place it on a magnetic stirrer at 800 rpm After stirring at the rotating speed for 20 minutes, it was added to 100 parts of E-06 water-based epoxy resin emulsion and magnetically stirred for 30 minutes. Then, 30 parts of polytetrafluoroethylene aqueous dispersion, 15 parts of molybdenum disulfide powder, 10 parts of chromium oxide powder with a particle size of 3 μm were added in sequence, and 2 parts of sodium dodecyl sulfonate were added dropwise. Stirring at a rotational speed of rev / min for 30 min to obtain a modified epoxy resin dry film lubricant.

[0031] The properties of the above modified epoxy resin dry film lubricants were tested. Immerse the iron sheet that has been polished with sandpaper in the above water-based paint, slowly and vertically pull it out, let it stand for 5 minutes, put it in a...

Embodiment 2

[0035] After adding 0.4 part of γ-methacryloyloxypropyltrimethoxysilane dropwise to 3 parts of titanium dioxide nanoparticles with a particle size of 10-20nm, add 30 parts of absolute ethanol, and then place it on a magnetic stirrer at 800 rpm After stirring for 20 minutes at a rotational speed of / min, add it to 100 parts of E-033 waterborne epoxy resin emulsion, and stir magnetically for 30 minutes. Then, 40 parts of polytetrafluoroethylene aqueous dispersion, 20 parts of graphite powder, 10 parts of alumina powder with a particle size of 2 μm were added in sequence, 1 part of sodium dodecylbenzene sulfonate was added dropwise, and 10 parts of deionized water were added. After dilution, a mixing speed-adjusting disperser was used for stirring at a speed of 1500 rpm for 30 min to obtain a modified epoxy resin dry film lubricant.

[0036] The properties of the above modified epoxy resin dry film lubricants were tested. Immerse the iron sheet that has been polished with sandpa...

Embodiment 3

[0040] After adding 5 parts of aluminum oxide nanoparticles with a particle size of 20-30nm to 0.2 part of γ-aminopropyltriethoxysilane, add 10 parts of absolute ethanol, and then place it on a magnetic stirrer at 800 rpm / After stirring for 20 minutes at a divided speed, add it to 100 parts of E-033 waterborne epoxy resin emulsion, and stir magnetically for 30 minutes. Then, 40 parts of molybdenum disulfide powder, 20 parts of graphite powder, 15 parts of chromium oxide powder with a particle size of 5 μm, 4 parts of sodium dodecyl sulfonate were added in sequence, and then 20 parts of deionized water were added for dilution. The speed disperser was stirred at 1500 rpm for 30 min to obtain the modified epoxy resin dry film lubricant.

[0041] The properties of the above modified epoxy resin dry film lubricants were tested. Immerse the iron sheet that has been polished with sandpaper in the above water-based paint, slowly and vertically pull it out, let it stand for 5 minutes...

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Abstract

The invention discloses a dry film lubricant based on modified epoxy resin and characterized by comprising the following components: 100 to 120 parts of epoxy resin, 1 to 5 parts of inorganic nano-particles, 0.1 to 0.5 part of coupling agent, 20 to 60 parts of lubricant, 10 to 20 parts of anti-wear agent, 1 to 4 parts of dispersing agent, 10 to 30 parts of absolute alcohol and 0 to 20 parts of deionized water. The method for preparing the dry film lubricant comprises the following steps: firstly, carrying out surface modification on the inorganic nano-particles by the coupling agent; then, adding the modified inorganic nano-particles to the epoxy resin to obtain the modified water-based epoxy resin nano-emulsion; adding the dispersing agent to the mixture of the lubricant and the anti-wear agent drop by drop; then, adding the mixture to the modified water-based epoxy resin nano-emulsion, and evenly mixing; and further adding the deionized water to adjust the viscosity of coatings, thus obtaining the dry film lubricant based on the modified epoxy resin. The invention has the advantages of low emission of organic volatile substances, good frictional properties, strength, toughness, weather resistance, corrosion resistance and other overall properties and simple preparation process.

Description

technical field [0001] The invention relates to water-based paints, in particular to a modified epoxy resin dry film lubricant and a preparation method thereof. Background technique [0002] Dry film lubricant is one of the main types of solid lubricating materials. It is a kind of solid lubricant dispersed in an organic or inorganic binder system, and then a coating process similar to paint is used to form a film on the surface of friction parts to reduce friction. A new type of lubrication technology for friction and wear, especially organic bonding dry film lubricants, using binder-type polymer resin as a carrier to adhere one or more solid lubricants to the surface of friction parts, using Simple, convenient construction, can be effectively lubricated in high and low temperature, high load, ultra-high vacuum, strong redox and strong radiation environment, is currently the most diverse and widely used type of dry film lubricant. For example, Lanzhou Institute of Chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M145/18C09D163/00
Inventor 王慧戴丹张昕乌学东
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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