Corrosion-resistant PI thrust pad and preparation method thereof

A thrust pad and corrosion-resistant technology, which is applied in the field of thrust pads, can solve the problems of low transmission system efficiency and large thrust pad effect, and achieve the effects of reducing hydrophilicity, improving corrosion resistance, and good practicability

Pending Publication Date: 2021-09-10
常州市永邦塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The role of the thrust pad is very large, and its existence is indispensable. In order to avoid the corrosion of the thrust pad during the working process and cause the efficiency of the transmission system to be too low, the present invention proposes a corrosion-resistant PI thrust pad and its preparation method

Method used

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  • Corrosion-resistant PI thrust pad and preparation method thereof

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Embodiment 1

[0047] A method for preparing a corrosion-resistant PI thrust pad, comprising the following steps:

[0048] S1: Reacting graphene oxide and chitosan to prepare a carbon matrix composite;

[0049] S2: reacting toluene diisocyanate, pyromellitic anhydride, terbium chloride and the carbon matrix compound to prepare a polyimide compound;

[0050] S3: Melt extrusion and injection molding of the polyimide compound to obtain a thrust pad;

[0051] S4: Treat the surface of the thrust pad with perfluorobutane to prepare a corrosion-resistant PI thrust pad.

[0052] Among them, S1:

[0053] Mix graphene oxide with deionized water, stir mechanically for 20 minutes, disperse ultrasonically for 5 minutes, add 1-ethyl-carbodiimide hydrochloride and N-hydroxysuccinimide, heat in a water bath to 40°C, and stir mechanically 40 minutes, ultrasonic dispersion for 80 minutes, adding acetic acid and chitosan, stirring mechanically for 1 hour, refluxing for 3 hours, filtering, washing with deioniz...

Embodiment 2

[0062] A method for preparing a corrosion-resistant PI thrust pad, comprising the following steps:

[0063] S1: Reacting graphene oxide and chitosan to prepare a carbon matrix composite;

[0064] S2: reacting toluene diisocyanate, pyromellitic anhydride, terbium chloride and the carbon matrix compound to prepare a polyimide compound;

[0065] S3: Melt extrusion and injection molding of the polyimide compound to obtain a thrust pad;

[0066] S4: Treat the surface of the thrust pad with perfluorobutane to prepare a corrosion-resistant PI thrust pad.

[0067] Among them, S1:

[0068] Mix graphene oxide with deionized water, stir mechanically for 20 minutes, disperse ultrasonically for 5 minutes, add 1-ethyl-carbodiimide hydrochloride and N-hydroxysuccinimide, heat in a water bath to 40°C, and stir mechanically 40 minutes, ultrasonic dispersion for 80 minutes, adding acetic acid and chitosan, stirring mechanically for 1 hour, refluxing for 3 hours, filtering, washing with deion...

Embodiment 3

[0077] A method for preparing a corrosion-resistant PI thrust pad, comprising the following steps:

[0078] S1: Reacting graphene oxide and chitosan to prepare a carbon matrix composite;

[0079] S2: reacting toluene diisocyanate, pyromellitic anhydride, terbium chloride and the carbon matrix compound to prepare a polyimide compound;

[0080] S3: Melt extrusion and injection molding of the polyimide compound to obtain a thrust pad;

[0081] S4: Treat the surface of the thrust pad with perfluorobutane to prepare a corrosion-resistant PI thrust pad.

[0082] Among them, S1:

[0083] Mix graphene oxide with deionized water, stir mechanically for 20 minutes, disperse ultrasonically for 5 minutes, add 1-ethyl-carbodiimide hydrochloride and N-hydroxysuccinimide, heat in a water bath to 40°C, and stir mechanically 40 minutes, ultrasonic dispersion for 80 minutes, adding acetic acid and chitosan, stirring mechanically for 1 hour, refluxing for 3 hours, filtering, washing with deion...

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Abstract

The invention discloses a corrosion-resistant PI thrust pad and a preparation method thereof. The corrosion-resistant PI thrust pad is mainly prepared from graphene oxide, chitosan, toluene diisocynate, pyromellitic dianhydride and terbium chloride. Graphene oxide and chitosan are mixed, so the strength and wear resistance of the thrust pad can be improved; meanwhile, chitosan can be protonized by adding acetic acid, so the surface of chitosan is positively charged, the surface has a large number of positive charges, the chitosan can be combined with graphene oxide with electronegativity more easily, and the combination strength is higher; the surface of the thrust pad is treated by perfluorobutane, so that the hydrophilicity of the thrust pad can be reduced, the hydrophobicity of the thrust pad can be improved, and the corrosion resistance of the thrust pad can be improved; and the corrosion-resistant PI thrust pad prepared by the invention has good corrosion resistance, solves the problem of poor transmission efficiency caused by corrosion of the thrust pad in the use process, and has good practicability.

Description

technical field [0001] The invention relates to the technical field of thrust pads, in particular to a corrosion-resistant PI thrust pad and a preparation method thereof. Background technique [0002] Thrust pad is a part set between two different parts to avoid mutual friction, extrusion and collision during the transmission process. For example, in the transmission of a vehicle, the thrust pad is an indispensable part. There is a thrust pad between different gears, which separates the gears and prevents the gears from rubbing against each other during the rotation. The collision will cause the parts to deform, which will affect the operation of the entire transmission. At the same time, there will be a huge shaft between the gears. The thrust pad can absorb the generated axial force and provide a good transmission condition for the tachometer. [0003] The role of the thrust pad is very large, and its existence is indispensable. In order to prevent the thrust pad from bei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08L79/08C08L87/00C08G73/10C08G83/00
CPCC08J7/12C08G73/1035C08G83/001C08J2379/08C08J2487/00
Inventor 吉全波
Owner 常州市永邦塑业有限公司
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