Effect of chain extender content on tribological properties of polyurethane under water‐lubrication

Author:

Xu Qiran12,Guo Zhiwei13ORCID,Huang Qiren13,Yuan Chengqing13

Affiliation:

1. Reliability Engineering Institute Nation Engineering Research Center for Water Transportation Safety Wuhan China

2. School of Naval Architecture Ocean and Energy Power Engineering Wuhan University of Technology Wuhan Hubei China

3. School of Transportation and Logistics Engineering Wuhan University of Technology Wuhan Hubei China

Abstract

AbstractPolyurethane has been extensively studied as a multifunctional material for water‐lubricated bearing materials. As one of the polyurethane elastomeric synthetic material, the content of 4,4′‐methylene bis(2‐chloroaniline) (MOCA) directly affects the intermolecular structure and thus the properties of the material. Five samples with different MOCA contents were prepared by casting molding and tested. The results showed that the optimal comprehensive performance was obtained when the ratio of the amino group to the hydrocyanic acid group was 0.95, with tensile, compressive, and bending strengths of 50.1, 91.8, and 12.6 MPa, respectively. Compared with other samples, the surface of the sample was smooth, which was conducive to the formation of the water film. The bearing capacity and lubrication condition are improved, and the best tribological performance was shown. This research for the application of polyurethane elastomer on the water‐lubricated bearing provides a theoretical basis.

Funder

Innovative Research Group Project of the National Natural Science Foundation of China

Publisher

Wiley

Subject

Materials Chemistry,Polymers and Plastics,Surfaces, Coatings and Films,General Chemistry

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