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논문 기본 정보

자료유형
학술저널
저자정보
Yi-hua Qian (Electric Power Research Institute of Guangdong Power Grid Corporation) Hong-zhao Xiao (Electric Power Research Institute of Guangdong Power Grid Corporation) Ming-hao Nie (Wuhan University) Yao-hong Zhao (Electric Power Research Institute of Guangdong Power Grid Corporation) Yun-bai Luo (Wuhan University) Shu-ling Gong (Wuhan University)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.2
발행연도
2018.3
수록면
918 - 927 (10page)

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초록· 키워드

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Based on the actual operating environment of transformer, the aging tests of nitrile butadiene rubber (NBR) were conducted systematically under four conditions: in air, in transform oil, under compression in air and under compression in transform oil to studythe effect of high temperature, transform oil and compression stress simultaneously on the thermal aging behaviors of nitrile butadiene rubber and predict the lifetime. The effects of liquid media and compression stress simultaneously on the thermal aging behaviors of nitrile butadiene rubber were studied by using characterization methods such as IR spectrosc-opy, thermogravimetric measurements, Differential Scanning Calorimetry (DSC) measurements and mechanical property measurements. The changes in physical properties during the aging process were analyzed and compared. Different aging conditions yielded materials with different properties. Aging at 70°C under compression stress in oil, the change in elongation at break was lower than that aging in oil, but larger than that aging under compression in air. The compression set or elongation at break as evaluation indexes, 50% as critical value, the lifetime of NBR at 25°C was predicted and compared. When aging under compression in oil, the prediction lifetime was lower than in air and under compression in air, and in oil. It was clear that when predicting the service lifetime of NBR in oil sealing application, compression and media liquid should be involved simultaneously. Under compression in oil, compression set as the evaluation index, the prediction lifetime of NBR was shorter than that of elongation at break as the evaluation index. For the life prediction of NBR, we should take into account of the performance trends of NBR under actual operating conditions to select the appropriate evaluation index.
#Nitrile butadiene rubber #Aging #Lifetime prediction #Compression stress #Transform oil

목차

Abstract
1. Introduction
2. Experimental Section
3. Results and Discussion
4. Conclusions
References

참고문헌 (21)

참고문헌 신청
Alcock B and Jørgensen JK, “The mechanical properties of a model hydrogenated nitrile butadiene rubber (HNBR) following simulated sweet oil exposure at elevated temperature and pressure,” Polym Test, vol.46, pp.50-58, Sep. 2015. Buckley GS and Roland M, “Influence of liquid media on lifetime predictions of nitrile Rubber,” J Appl Polym Sci, vol. 131, pp. 40296-40301, Dec. 2014. Budrugeac P, “Accelerated thermal aging of nitrilebutadiene rubber under air pressure,” Polym Degrad Stab, vol.47, pp.129-132, 1995. Bystritskaya EV, Monakhova TV and Ivanov VB, “TGA application for optimising the accelerated aging conditions and predictions of thermal aging of rubber,” Polym Test, vol.32, pp.197-201, Apr. 2012. Choi SS and Kim JC, “Lifetime prediction and thermal aging behaviors of SBR and NBR composites using crosslink density changes,” J Ind Eng Chem, vol.18, pp.1166-1170, May. 2012.

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