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Polymers 2018, 10(2), 173; https://doi.org/10.3390/polym10020173

Study about Mechanical Property and Machinability of Polyimide

1
School of Mechanical Science and Engineering, Jilin University, Changchun 130025, China
2
College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
3
School of Mechanical and Electrical Engineering, Changchun University of Technology, Changchun 130012, China
*
Authors to whom correspondence should be addressed.
Received: 30 December 2017 / Revised: 4 February 2018 / Accepted: 8 February 2018 / Published: 11 February 2018
(This article belongs to the Special Issue Mechanics of Emerging Polymers with Unprecedented Networks)
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Abstract

Polyimide (PI) is a kind of polymer material with properties of high heat-resistance and good mechanical strength. As a special engineering material, it has been widely used in the fields of aviation, nanotechnology, etc. PI has been regarded as one of the most promising engineering plastics in the future. Therefore, further research must be made on its mechanical properties and machinability of the PI, especially in ultra-precision machining. In this paper, both of the mechanical properties and machinability have been studied respectively. Through the nanoindentation experiment, the nanoindentation hardness and elastic modulus of PI are analyzed. Also, the single point diamond turning (SPDT) experiment is conducted to show that the form accuracy and surface roughness of PI surface can reach a submicron degree in peak-to-valley (PV) and a nanometer scale in surface roughness (Ra) respectively. The results demonstrate that the PI possesses good mechanical properties and machinability. View Full-Text
Keywords: polyimide (PI); mechanical property; machinability; nano-indentation; single point diamond turning (SPDT) polyimide (PI); mechanical property; machinability; nano-indentation; single point diamond turning (SPDT)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ji, S.; Yang, J.; Zhao, J.; Hu, Y.; Gao, H. Study about Mechanical Property and Machinability of Polyimide. Polymers 2018, 10, 173.

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