The effect of sulfonated graphene oxide on the current-carrying wear characteristics of a resin matrix carbon brush

FENG Peng-yang; TU Chuan-jun; CHEN Zha-kun; WEI Gong; GU Zhi-ping

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Article Navigation > New Carbon Mater. > 2017 > 32(4): 352-357

FENG Peng-yang, TU Chuan-jun, CHEN Zha-kun, WEI Gong, GU Zhi-ping. The effect of sulfonated graphene oxide on the current-carrying wear characteristics of a resin matrix carbon brush. New Carbon Mater., 2017, 32(4): 352-357.

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The effect of sulfonated graphene oxide on the current-carrying wear characteristics of a resin matrix carbon brush

1.
School of Materials Science and Engineering, Hunan University, Changsha 410082, China;
2.
Shanghai Mopeng Electrical carbon Science and Technology Ltd., Shanghai 200000, China

Funds: National Natural Foundation of China (51102089);Natural Science Foundation of Hunan Province (2016JJ2024).

Received Date: 2017-03-29
Accepted Date: 2017-08-31
Rev Recd Date: 2017-06-15
Publish Date: 2017-08-28

Abstract

Abstract

A novel resin matrix carbon brush (RMCB) was prepared by dispersing sulfonated graphene oxide (SGO) and flake graphite powder into a phenolic resin alcohol solution, followed by drying, hot rolling, pulverization, cold pressing and solidification by heat treatment. The current-carrying wear performance of the RMCB was tested by using it in a heavy-duty industrial motor at different on-load voltages from 200 to 240 V for 4 h and examining it after use. The microstructure was characterized by XRD, SEM, EDS and TEM. Results show that the flake graphite particles were bridged by SGO and the ground surface of the brush exhibited an interconnected carbon structure. The wear rate of the RMCB with SGO was 2.06×10^-7 mg·N^-1·m^-1 at 220 V, which was 31.3% of that of the RMCB without SGO. The combined action of arc erosion wear, oxidative wear and adhesive wear was the dominant wear mechanism of the brush with and without SGO during the current-carrying wear test.
- Resin matrix carbon brush,
- Sulfonated graphene,
- Wear with current,
- Microstructure

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