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Enhanced self-lubricating joint bearing gasket material preparation method

A technology for spherical plain bearings and lining materials, which can be applied to coatings and other directions, can solve the problems of limited selection range of inorganic core layer nanoparticles and complex preparation process, achieve adjustable shell thickness, simple and efficient preparation process, and improve friction and wear. performance effect

Active Publication Date: 2019-12-13
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the core-shell nanoparticles is complicated, and the inorganic core nanoparticles need to be pre-modified and the selection range is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1. Preparation of core-shell nanopowder:

[0037] Preparation of core-shell structure nano-powder A and core-shell structure nano-powder B

[0038] Disperse 2g of inorganic nanopowder (corresponding to core-shell structure nanopowder A is nano-zinc oxide, and corresponding to core-shell structure nanopowder B is nano-silicon oxide) in 5L of ethanol solution, add 0.1g bis Functional catechol monomer Im-Ca was uniformly stirred for 5 minutes, and then 0.1 g of bifunctional phenylboronic acid monomer Im-BA was added, and stirred at room temperature for 6 hours to obtain nanopowder with core-shell structure.

[0039] 2. Preparation of enhanced self-lubricating coating material:

[0040] 70g matrix resin polyimide, 2g polytetrafluoroethylene powder, 0.5g graphene powder, 3g BYK161, 2g core-shell structure nano-powder A, 1g core-shell structure nano-powder B, 30g solvent by ultrasonic and mechanical stirring Mix and disperse uniformly in the same way to obtain self-lubricat...

Embodiment 2

[0042] 1. Preparation of core-shell nanopowder:

[0043] Preparation of core-shell structure nano-powder A and core-shell structure nano-powder B

[0044] Disperse 5g of inorganic nanopowder (corresponding to core-shell structure nanopowder A is nano-zinc oxide, and corresponding to core-shell structure nanopowder B is nano-silicon oxide) in 10L of ethanol solution, add 0.5g bis Functional catechol monomer Im-Ca was uniformly stirred and reacted for 20 minutes, then 1 g of bifunctional phenylboronic acid monomer Im-BA was added, and stirred and reacted at room temperature for 12 hours to obtain a core-shell structure nanopowder.

[0045] 2. Preparation of enhanced self-lubricating coating material:

[0046]100g matrix resin polyphenyl sulfide, 5g polytetrafluoroethylene powder, 1g graphene powder, 2g BYK-307, 4g core-shell structure nano-powder A, 5g core-shell structure nano-powder B, 50g solvent through ultrasonic, Mix and disperse evenly by means of mechanical stirring to...

Embodiment 3

[0048] 1. Preparation of core-shell nanopowder:

[0049] Preparation of core-shell structure nano-powder A and core-shell structure nano-powder B

[0050] Disperse 7g of inorganic nano-powder (corresponding to the core-shell structure nano-powder A is nano-zinc oxide, and corresponding to the core-shell structure nano-powder B is nano-silicon oxide) in 10L of ethanol solution, add 0.7g bis Functional catechol monomer Im-Ca was uniformly stirred and reacted for 30 minutes, and then 0.4 g of bifunctional phenylboronic acid monomer Im-BA was added, and stirred and reacted at room temperature for 12 hours to obtain a core-shell structure nanopowder.

[0051] 2. Preparation of enhanced self-lubricating coating material:

[0052] 80g matrix resin PEEK, 2g polytetrafluoroethylene powder, 1.5g graphene powder, 3g BYK101, 2.5g core-shell structure nano-powder A, 3g core-shell structure nano-powder B, 35g solvent through ultrasonic, mechanical Mix and disperse evenly by means of stirr...

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Abstract

The invention discloses an enhanced self-lubricating joint bearing gasket material preparation method, which comprises: coating inorganic nano-powder with a borate polymer, and under the synergistic effect of organic-metal coordination and B-N coordination, simply and efficiently preparing a core-shell structure nano-powder with an adjustable shell thickness. According to the present invention, byusing the strong affinity between the borate polymer and the matrix resin and the hydrogen-bond interaction between the surplus boric acid or catechol functional group on the surface and the matrix resin, the dispersity of the nanoparticles in the matrix resin is improved, and the comprehensive mechanical properties of the coating material are improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a preparation method of an enhanced self-lubricating joint bearing liner material. Background technique [0002] Bearings that add a little lubricant or no lubricant at all to make the sliding bearing itself lubricated are called self-lubricating bearings. Self-lubricating bearing technology completely breaks through the limitations of relying on grease lubrication and realizes oil-free lubrication, eliminating the need for lubricating devices and sealing devices for lubricating oil and grease, thus greatly simplifying the design of the bearing and reducing the cost. Due to economic, ecological and technical reasons, self-lubricating material bearing technology is the development trend of lubrication technology at present, and the development of self-lubricating composite materials with high mechanical strength and good friction performance has become an important ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D181/02C09D161/16C09D127/18C09D7/62C09D7/61C09D7/65
CPCC08K2003/2296C08K2201/011C09D7/61C09D7/62C09D7/65C09D7/70C09D161/16C09D179/08C09D181/02C08L27/18C08K9/10C08K9/08C08K3/22C08K3/34C08K3/042
Inventor 曾碧榕戴李宗陈国荣许一婷罗伟昂袁丛辉毛杰鹿振武黄楚红
Owner XIAMEN UNIV
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