| Study on Application of Constant Viscosity NR in Rubber Sleeper Pad |
| Received:August 11, 2020 Revised:August 11, 2020 |
| DOI：10.12136/j.issn.1000-890X.2022.03.0213 |
| Key Words: constant viscosity NR；rubber sleeper pad；Mooney viscosity；vulcanization characteristics； physical property |
| Author Name | Affiliation | E-mail | | LU Ming* | Beijing Research and Design Institute of Rubber Industry Co.，Ltd | luminggrh@126.com | | ZHOU Jingrun | Shanghai Huajun Rubber Technology Co.，Ltd | | | wang yongwei | Beijing Research and Design Institute of Rubber Industry Co.，Ltd | | | ZHOU Qibin | Shanghai Huajun Rubber Technology Co.，Ltd | | | CAI Shangmai | Beijing Research and Design Institute of Rubber Industry Co.，Ltd | | | QIAN Jiang | Shanghai Huajun Rubber Technology Co.，Ltd | | | CHEN Hong | Beijing Research and Design Institute of Rubber Industry Co.，Ltd | |
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| Abstract: |
| Abstract：The application of domestic constant viscosity natural rubber（NR）in the rubber sleeper pad
（referred to as sleeper pad） was studied and compared with imported similar products. The results showed
that the Mooney viscosity of the raw rubber of domestic and imported constant viscosity NR met the index
requirements，and the basic properties of domestic constant viscosity NR were slightly better. The properties
of the sleeper pad compound made of either domestic or imported constant viscosity NR met the product
requirements. However，it was found that the properties of the sleeper pad compound using the domestic
constant viscosity NR were better，and the properties of the compound with domestic constant viscosity NR
CV-7 were the best. |
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