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Epoxy resin solid lubrication coating material and preparation method thereof

A solid lubricating coating, epoxy resin technology, applied in epoxy resin coatings, coatings, lubricating compositions, etc., can solve the problems of poor dispersion of solid lubricants, easy precipitation of solid lubricants, and short shelf life of coatings, etc. Achieve the effect of overcoming poor dispersion, solving uneven concentration and improving compatibility

Inactive Publication Date: 2010-06-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, polymer resin-based solid lubricating coatings still have such deficiencies: poor dispersion of solid lubricants in resins, easy precipitation of solid lubricants, short shelf life of coatings, and easy occurrence of defects after coating, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Add 460ml of concentrated sulfuric acid with a concentration of 98% into the three-neck flask, cool to 0-6°C, add 20g of colloidal graphite powder with a particle size of 2μm under stirring, then weigh 30g of potassium permanganate, and slowly add it to the flask After reacting for 2 hours, heat up to 35°C, continue to react for 30 minutes, slowly add 460ml of deionized water to the system, continue stirring for 15 minutes, transfer the product to a large beaker, dilute with 2500ml of deionized water and add a concentration of 5% 200ml of hydrogen peroxide, let it stand, pour off the supernatant, filter and wash repeatedly until the filtrate has no sulfate residue, dry, grind, and sieve to obtain graphite oxide, which is set aside. (This graphite oxide preparation method is slightly improved on the basis of the Hummers method. The original Hummers method comes from references: Williams Hummers, JR Richarde Offeman.Preparation of Graphitic Oxide.Journal of the American...

Embodiment 2

[0036] 1. Same as Step 1 of Example 1.

[0037] 2. Dissolve 1g of organic molybdate in a composite solvent composed of 10g of 1,4-xylene and 5g of n-butanol, add 7.5g of graphite oxide, and ultrasonically oscillate for 60 minutes to obtain a solid lubricant suspension modified by organic molybdenum compound surface .

[0038] 3. After taking 22.5g of bisphenol A epoxy resin E51 and keeping the temperature at 60°C for 90 minutes, add a composite solvent consisting of 2.8g of xylene and 1.2g of n-butanol to obtain a low-viscosity epoxy resin.

[0039] 4. Add the above-mentioned organic molybdenum compound surface-modified solid lubricant suspension into low-viscosity epoxy resin, and use methods such as strong stirring and ultrasonic dispersion to uniformly disperse the graphite oxide solid lubricant to obtain the desired organic molybdenum compound-containing surface modification. Graphite Oxide Epoxy Resin Solid Lubricant Coating A Component.

[0040] When in use, use the cu...

Embodiment 3

[0043] 1. Same as step 1 of embodiment one.

[0044] 2. Dissolve 0.88g of organic molybdate in a composite solvent composed of 7g of 1,4-xylene and 3g of n-butanol, add 6.5g of graphite oxide, and oscillate ultrasonically for 30 minutes; another 0.62g of organic molybdate is dissolved in Add 4.5 g of molybdenum disulfide to a composite solvent composed of 3.5 g of xylene and 1.5 g of n-butanol, and oscillate ultrasonically for 30 minutes; mix the two suspensions obtained above, and oscillate ultrasonically for 40 minutes to obtain a solid lubricating oil with organic molybdenum compound surface modification. agent suspension.

[0045]3. Take 22.5g of bisphenol A epoxy resin E51, and keep the temperature at 60°C for 90 minutes to obtain a low-viscosity epoxy resin.

[0046] 4. Add the above-mentioned organic molybdenum compound surface-modified solid lubricant suspension into low-viscosity epoxy resin, and use methods such as strong stirring and ultrasonic dispersion to unifor...

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Abstract

The invention relates to an epoxy resin solid lubrication coating material containing surface finish graphite oxide and a preparation method thereof. The material is a coating material containing a component A and a component B, and is characterized in that: the component B is a curing agent, and the weight of the component B is 3-15% of that of the component A; the component A comprises the following components by weight percentage: 20-35% of solid lubricant, 25-45% of epoxy resin, 1-5% of coupling agent and 25-55% of organic solvent. The invention provides a method and an approach for preparing a polymolecularity and macromolecule based nanocomposite and a macromolecular resin based solid-film lubricantion coating material, solves the problems of poor dispersity of the graphite solid lubricant in a resin solution, and solves the difficult problems that the macromolecular resin based solid-film lubricantion coating material has uneven concentration and harder thickness control, defects of the coating and the like.

Description

technical field [0001] The invention relates to a solid lubricating coating material and a preparation method thereof, in particular to an epoxy resin solid lubricating coating material containing surface-modified graphite oxide and a preparation method thereof. Background technique [0002] Under the harsh working conditions of ultra-high temperature, low speed and high load, solid lubrication technology can ensure long-term and effective lubrication of workpieces, and has been widely used in aviation, aerospace and weapon systems and other fields. Polymer resin-based solid lubricating coating uses polymer resin as the binding phase, disperses graphite and molybdenum disulfide as solid lubricants in the resin, and coats it on the surface of mechanical transmission friction components through a specific coating process , to reduce the friction coefficient and wear of the friction pair. The polymer resin-based solid lubricating coating not only has a lower friction coefficie...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D7/12C09D163/02C10M125/00C10M125/22C10M125/02
Inventor 郭强刘海彬王娴娴邵先立叶小燕
Owner SHANGHAI UNIV
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