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Solid lubricating protective coating as well as preparation method and application thereof

A protective coating and solid lubrication technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of wear-resistant life, bearing capacity and salt spray resistance at the same time, and achieve excellent aluminum corrosion resistance and Thermal stability, strong impact resistance and toughness, good adhesion effect

Pending Publication Date: 2021-08-06
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing solid lubricating coating materials, such as Chinese patents CN103725069A and CN1895795A, have the problem that wear life, bearing capacity and salt spray resistance cannot be taken into account at the same time

Method used

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  • Solid lubricating protective coating as well as preparation method and application thereof
  • Solid lubricating protective coating as well as preparation method and application thereof
  • Solid lubricating protective coating as well as preparation method and application thereof

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preparation example Construction

[0049] The present invention also provides a preparation method of the solid lubricating protective coating described in the above technical solution, comprising the following steps:

[0050] Mix octaammonium cage polysesquioxane with graphene oxide for covalent grafting reaction to obtain POSS / GO nano-modified filler;

[0051] mixing epoxy resin, cashew oil modified phenolic resin and the first part of mixed solvent to obtain a resin system;

[0052] Mixing the POSS / GO nano-modified filler and the resin system for modification to obtain a modified resin system;

[0053] mixing molybdenum disulfide, cerium trifluoride, antimony trioxide, dibasic lead phosphite, organic bentonite and the second part of the mixed solvent to obtain an additive system;

[0054] The additive system, the modified resin system and the remaining mixed solvent are mixed to obtain the solid lubricating protective coating.

[0055] The invention mixes octaammonium cage polysemisiloxane and graphene oxi...

Embodiment 1

[0076] The solid lubricating protective coating is made of the following components: 5.0g of epoxy resin, 1.0g of cashew oil modified phenolic resin, 0.3g of octaammonium caged polysesquioxane, 0.2g of graphene oxide, and 13.0g of molybdenum disulfide g, 1.0 g of antimony trioxide, 1.0 g of cerium trifluoride, 0.50 g of organic bentonite, 0.10 g of dibasic lead phosphite, and 77.9 g of a mixed solvent. The mixed solvent is uniformly mixed with 28% ethylene glycol ether, 17% methyl ethyl ketone and 55% toluene in volume percentage.

[0077]Preparation method: (1) Using graphene oxide as the matrix, octaammonium caged polysesquioxane is covalently grafted on the surface of graphene oxide through a chemical reaction (ultrasound for 30 minutes) to prepare POSS / GO nano-modified fillers (2) take epoxy resin and cashew nut oil modified phenolic resin according to the formula, and add part of the mixed solvent in the resin, stir to make it dissolve completely; (3) introduce the POSS / G...

Embodiment 2

[0080] The solid lubricating protective coating is made of the following components: 5.50 g of epoxy resin, 2.0 g of cashew oil modified phenolic resin, 0.4 g of octaammonium caged polysesquioxane, 0.3 g of graphene oxide, and 13.5 g of molybdenum disulfide g, 1.0 g of antimony trioxide, 1.2 g of cerium trifluoride, 0.55 g of organic bentonite, 0.2 g of dibasic lead phosphite, and 75.4 g of a mixed solvent. The mixed solvent is uniformly mixed with 26% ethylene glycol ether, 18% methyl ethyl ketone and 56% toluene in volume percentage.

[0081] Its preparation method is with embodiment 1.

[0082] The prepared coating has good adhesion to the metal substrate, has strong impact resistance and toughness, and the wear life of Falex is 470 minutes under the load of 4450N, the load capacity is 11200N, the resistance to neutral salt spray is 100 hours, and the corrosion resistance of aluminum The performance, medium resistance and thermal stability are good, and the performance mee...

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Abstract

The invention provides a solid lubricating protective coating as well as a preparation method and application thereof, and belongs to the technical field of surface coatings. Epoxy resin and cashew nut oil modified phenolic resin are used as matrix resin, NH2-POSS and GO are used for modifying the matrix resin from the molecular level, molybdenum disulfide is used as a solid lubricant, organobentonite, dibasic lead phosphite, cerium trifluoride and antimony trioxide are used as functional fillers, a mixed solvent is used as a dispersion medium, the corrosion-resistant solid lubricating protective coating with high bearing capacity and long service life is obtained. The coating has good adhesion to a metal substrate, has strong impact resistance and toughness, has the Falex wear-resistant life of not less than 450 minutes under the load of 4450 N, has the bearing capacity of 11200 N, has the protection capacity of protecting a carbon steel test piece against a 100-hour salt spray test, has good aluminum corrosion resistance, medium resistance and thermal stability, and the performance can meet the index requirements specified by the American military specification MIL-L-46010E.

Description

technical field [0001] The invention relates to the technical field of surface coatings, in particular to a solid lubricating protective coating and its preparation method and application. Background technique [0002] Lubrication problems are common to all high-tech machinery. From space machinery to ground equipment, from micro-machines to super-large aircraft carriers, aviation, aerospace weapons, ships, nuclear technology, electronic information and other military technology fields, sea, land and air equipment, as long as mechanical movement is involved, all involve wear and friction question. In solving these wear and lubrication problems, solid lubrication technology plays an irreplaceable role. Solid lubricating coating is a typical application of solid lubricating technology and surface engineering technology, covering various parts of various machinery in the above fields. However, as the operating conditions of modern high-tech equipment become more and more har...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D161/14C09D5/08C09D7/61C09D7/65C09D7/62
CPCC09D163/00C09D5/08C09D7/61C09D7/65C09D7/62C08L2205/03C08K2003/3009C08K2201/005
Inventor 徐海燕万宏启陈磊李桂花安宇龙周惠娣
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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