| Study on Properties of NBR Compounds of Building Electrical Equipment Sealing Products |
| Received:April 07, 2023 Revised:April 07, 2023 |
| DOI：10.12136/j.issn.1000-890X.2025.02.0097 |
| Key Words: NBR；acrylonitrile content；glass transition temperature；heat aging resistance |
| Author Name | Affiliation | E-mail | | JIANG Guangming* | China Academy of Building Research | jiangguangming@yeah.net | | XIN Zhaohui | TBEA Shenyang Transformer Group Ltd | | | WANG Guangke | State Grid Smart Grid Research Institute | | | HU Shui | Beijing University of Chemical Technology | | | JIA Yinghua | CARS Jinhua Testing Center Co.Ltd | | | XIAO Kaiwei | China Academy of Building Research | |
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| Abstract: |
| The compositions and properties of two kinds of nitrile butadiene rubber（NBR） compounds used in building electrical equipment sealing products were studied，and the effect of acrylonitrile mass fractions of rubber components on the properties of NBR compounds was investigated.The results showed that the rubber compositions and plasticizer compositions of the two kinds of NBR compounds were similar.The NBR compound with low acrylonitrile mass fraction and low glass transition temperature（Tg） was suitable for use in low temperature environment，while the NBR compound with high acrylonitrile mass fraction and high Tg was not suitable for use in low temperature environment.Both of the two kinds of NBR compounds were not suitable for use in building electrical equipment sealing products at high temperature. |
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