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Ag/BNNSs nano material modified epoxy resin composite coating layer

A technology of epoxy resin and composite coating, applied in epoxy resin coatings, coatings and other directions, can solve the problems of high brittleness, poor friction properties, etc., and achieve high bonding strength, low wear rate, and small friction coefficient Effect

Inactive Publication Date: 2020-05-15
宁波宁静新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High brittleness and poor tribological properties due to the three-dimensional network structure and high crosslink density of epoxy resins

Method used

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  • Ag/BNNSs nano material modified epoxy resin composite coating layer
  • Ag/BNNSs nano material modified epoxy resin composite coating layer
  • Ag/BNNSs nano material modified epoxy resin composite coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First add 75mL of deionized water, 2.84g of sodium hydroxide, 1.08g of potassium hydroxide, and 1g of hexagonal boron nitride powder (hBN) into a 100mL polytetrafluoroethylene reactor, ultrasonically disperse for 30 minutes, magnetically stir for 30 minutes, and seal Heated at 180°C for 2h, after the reaction was completed, cooled to room temperature, centrifuged, washed the product three times with deionized water and ethanol, and freeze-dried for 48 hours to obtain hexagonal boron nitride nanosheet powder (BNNSs); react in 100mL polytetrafluoroethylene Add 80mL of deionized water, 0.6g of silver nitrate, and 1.2g of polyvinylpyrrolidone K30 into the kettle in sequence, take 0.05g of the prepared hexagonal boron nitride nanosheet powder, disperse it by ultrasonic for 30 minutes, stir it magnetically for 30 minutes, and seal it at 180°C After heating for 18 hours, after the reaction was completed, cool to room temperature, centrifuge, wash the product with deionized wate...

Embodiment 2

[0033]First, add 75mL of deionized water, 2.80g of sodium hydroxide, 1.0g of potassium hydroxide, and 0.8g of hexagonal boron nitride powder into a 100mL polytetrafluoroethylene reactor, ultrasonically disperse for 30 minutes, magnetically stir for 30 minutes, and seal at 180°C Heating for 2 hours, after the reaction is complete, cool to room temperature, centrifuge, wash the product three times with deionized water and ethanol, and freeze-dry for 48 hours to obtain hexagonal boron nitride nanosheet powder; add 80 mL of Deionized water, 0.5g silver nitrate, 1.0g polyvinylpyrrolidone K30, take 0.05g of the prepared hexagonal boron nitride nanosheet powder, ultrasonically disperse for 30 minutes, magnetically stir for 30 minutes, seal and heat at 180°C for 18h, the reaction is complete Afterwards, cool to room temperature, centrifuge, wash the product with deionized water and ethanol three times each, and freeze-dry for 48 hours to obtain the silver / hexagonal boron nitride nanosh...

Embodiment 3

[0035] First, add 75mL of deionized water, 2.86g of sodium hydroxide, 1.2g of potassium hydroxide, and 0.9g of hexagonal boron nitride powder into a 100mL polytetrafluoroethylene reaction kettle, ultrasonically disperse for 30 minutes, magnetically stir for 30 minutes, and seal at 180°C Heating for 2 hours, after the reaction is complete, cool to room temperature, centrifuge, wash the product three times with deionized water and ethanol, and freeze-dry for 48 hours to obtain hexagonal boron nitride nanosheet powder; add 80 mL of Deionized water, 0.7g silver nitrate, 1.4g polyvinylpyrrolidone K30, take 0.05g of the prepared hexagonal boron nitride nanosheet powder, ultrasonically disperse for 30 minutes, magnetically stir for 30 minutes, seal and heat at 180°C for 18h, the reaction is complete Afterwards, cool to room temperature, centrifuge, wash the product with deionized water and ethanol three times each, and freeze-dry for 48 hours to obtain the silver / hexagonal boron nitri...

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Abstract

The invention discloses a preparation method of a silver / hexagonal boron nitride nano hybrid material modified epoxy resin self-lubricating composite coating layer. The method mainly comprises the following steps: firstly, preparing hexagonal boron nitride nanosheets through simple hydrothermal stripping under mild reaction conditions; preparing a silver / hexagonal boron nitride nano hybrid material through a hydrothermal method, adding the silver / hexagonal boron nitride nano hybrid material into epoxy resin, a curing agent and an organic solvent according to a certain ratio, and carrying out mechanical stirring and ultrasonic dispersion to obtain a mixed solution; and finally, spraying the mixed solution on a base material, naturally drying, and curing and molding in a vacuum drying oven to obtain the epoxy resin self-lubricating composite coating layer. The prepared composite coating layer shows a low friction coefficient and high wear resistance, reaction conditions are mild, the preparation method is easy to operate, a large-area anti-friction and wear-resistant surface is easy to prepare, and the composite coating is suitable for large-scale production.

Description

Technical field: [0001] The invention relates to an epoxy resin self-lubricating composite material, in particular to a silver / hexagonal boron nitride nano-hybrid material lubricant filled modified epoxy resin self-lubricating composite material. Background technique: [0002] In recent years, in the field of tribology, self-lubricating composite materials are a kind of new materials with special uses developed to solve the friction and wear problems of materials under specific working conditions. The development of self-lubricating composite materials with high mechanical strength and good friction performance Become an important hotspot in the field of tribology. Polymer-based self-lubricating composite materials have also attracted the attention of researchers in this field due to their light weight and good formability. [0003] Pure polymers have the properties of corrosion resistance, excellent chemical stability, light weight and excellent damping and shock absorptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61
CPCC08K2003/0806C08K2003/385C08K2201/011C09D163/00C09D7/61C09D7/70C08K7/00C08K3/38C08K3/08
Inventor 张号李长生
Owner 宁波宁静新材料科技有限公司
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