Fabric liner coating material of self-lubricating joint bearing and preparation method thereof

A technology for spherical plain bearings and coating materials, which is applied in textiles and papermaking, fiber types, fiber processing, etc. Lubrication and mechanical properties overcome the effect

Active Publication Date: 2015-04-01
XIAMEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is more complicated, and the uniformity of the coating thickness is not easy to control
Guo Qiang et al. (Epoxy resin solid lubricating coating material and its preparation method, Chinese patent, publication number CN101717604A) disclosed an epoxy resin solid lubricating coating containing surface-modified graphite oxide and its preparation method, which overcomes the graphite solid The lubricant has poor dispersion in the resin solution, but the appearance of the material is affected to a certain extent, and the application is limited to a certain extent
Fleckman et al. (Self-lubricating coatings and methods for making self-lubricating coatings, Chinese patent, publication number CN102471917A) reported a coating constructed of metal layers in which lubricants that can be released through wear are embedded. The lubricating effect of the coating lasts for a long time, but the preparation process is very complicated, and it cannot be used for coating materials such as fabrics and polymer resins
[0006] At present, self-lubricating coatings containing POSS components for fabric lined spherical plain bearings have not been reported

Method used

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  • Fabric liner coating material of self-lubricating joint bearing and preparation method thereof
  • Fabric liner coating material of self-lubricating joint bearing and preparation method thereof
  • Fabric liner coating material of self-lubricating joint bearing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 0.5 parts of polyvinyl alcohol, 5 parts of tetrafluoroethylene powder, 2 parts of aminopropyltriethoxysilane coupling agent, 2 parts of aminopropyl POSS, 20 parts of 4,4'-diaminodiphenylsulfone were dissolved in 35 After stirring for 1 hour, add 80 parts of epoxy resin E51 in 10 times under ultrasonic vibration, and continue stirring for 1 hour to obtain a self-lubricating coating. Clean the polytetrafluoroethylene fabric with acetone, use the coating of the present invention for thin layer brushing, place it in a blast oven at 50°C for 1 hour, take it out, apply a pressure of 0.2Mpa and raise the temperature (programmed temperature rise, within 2 hours) to 160 ℃ curing 2h.

[0029] figure 1 is a schematic diagram of a plain bearing textile liner coated with a self-lubricating coating. The fabric liner is the most core part of the self-lubricating joint bearing. Obviously, the coating of the present invention fills the gaps between the fabric fibers, and when the fabr...

Embodiment 2

[0032] 0.5 parts of polyvinyl alcohol, 10 parts of tetrafluoroethylene powder, 2.5 parts of aminopropyltriethoxysilane coupling agent, 2 parts of aminopropyl POSS, 20 parts of 4,4'-diaminodiphenylsulfone were dissolved in 35 After stirring for 1 hour, add 80 parts of epoxy resin E51 in 10 times under ultrasonic vibration, and continue stirring for 1 hour to obtain a self-lubricating coating. The PTFE fabric is cleaned with acetone, brushed with a thin layer of the coating of the present invention, placed in a blast oven at 50°C for 1 hour, taken out and applied a pressure of 0.2Mpa and heated (programmed temperature within 2 hours) to 160°C Cured for 2h. After curing, the measured friction coefficient is 0.037, and the specific wear rate is 3.1±0.9 (×10 -6 mm 3 / Nm).

Embodiment 3

[0034] 1.0 parts of polyvinyl alcohol, 5 parts of tetrafluoroethylene powder, 5 parts of aminopropyltriethoxysilane coupling agent, 5 parts of aminopropyl POSS, 20 parts of 4,4'-diaminodiphenylsulfone were dissolved in 35 After stirring for 1 hour, add 80 parts of epoxy resin E51 in 10 times under ultrasonic vibration, and continue stirring for 1 hour to obtain a self-lubricating coating. The PTFE fabric is cleaned with acetone, brushed with a thin layer of the coating of the present invention, placed in a blast oven at 50°C for 1 hour, taken out and applied a pressure of 0.2Mpa and heated (programmed temperature within 2 hours) to 160°C Cured for 2h. After curing, the measured friction coefficient is 0.038, and the specific wear rate is 2.1±0.5 (×10 -6 mm 3 / Nm).

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Abstract

The invention provides a fabric liner coating material of a self-lubricating joint bearing and a preparation method thereof, and relates to a self-lubricating coating material and the preparation method thereof. The coating comprises the following components: 60 to 80 parts of epoxy resin, 0.1 to 5 parts of POSS (Polyhedral Oligomeric Silsesquioxane), 5 to 25 parts of polytetrafluoroethylene powder, 15 to 35 parts of a diluent, 0.5 to 5 parts of a silane coupling agent, 10 to 25 parts of a curing agent and 0.1 to 1 part of a surface active agent. The environment-friendly method and a way for preparing the self-lubricating abrasion-resistant liner coating material is provided; and the nanoscale polytetrafluoroethylene powder which is the same as the material of a fabric body is served as a filler in the formula, so that the friction coefficient is decreased greatly and the product appearance is improved. In addition, the nanoscale, the high surface energy and the similar 'bearing ball' effect of a cage shaped structure of the POSS are utilized, so that the friction reducing performance, the abrasion resisting performance and the self-lubricating performance of the coating are improved effectively.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a self-lubricating joint bearing fabric liner coating material and a preparation method thereof, in particular to a self-lubricating coating containing POSS and polytetrafluoroethylene powder and a preparation method thereof. Background technique [0002] Joint bearings, also known as spherical plain bearings, are mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. According to whether it needs to add lubricant during operation, spherical plain bearings can be divided into non-self-lubricating spherical plain bearings and self-lubricating spherical plain bearings. In recent years, self-lubricating joint bearings have occupied an increasingly important position in the field of high-end bearings, setting off a wave of research, the most representative of which is the fabric liner self-lubricating joint shaft. Fabric li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/55D06M15/256D06M13/513D06M101/22
Inventor 戴李宗陈凌南曾凡沛曾碧榕何两加罗伟昂王兆昌许一婷何国辉刘新瑜何凯斌
Owner XIAMEN UNIV
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