文章摘要
Effect of Natural Aphanitic Graphite from Different Mining Areas on Properties of NR
Received:March 09, 2020  Revised:March 09, 2020
DOI：10.12136/j.issn.1000-890X.2020.07.0519
Key Words: aphanitic graphite；NR；mining area；physical property；particle size
Author NameAffiliationE-mail
WU Jiangtao* Beijing Research and Design Institute of Rubber Industry Co. ，Ltd 1435058009@qq.com 
GAO Jiahua Beijing Research and Design Institute of Rubber Industry Co. ，Ltd  
CHEN Hui Hunan University  
LIU Yufei South Graphite Co. ，Ltd  
LIU Hongtao Hunan Runzhong New Material Technology Co. ，Ltd  
TONG Xi Beijing Research and Design Institute of Rubber Industry Co. ，Ltd  
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Abstract:
      The effect of natural aphanitic graphite from different mining areas on the properties of natural rubber（NR） was studied.The results showed that the physical properties of NR compound were improved to some extent by addition of aphanitic graphite，but the influence of different aphanitic graphite on the physical properties of NR compound was quite different due to different mining area，ore-forming environment and composition. When the particle size of aphanitic graphite was larger than 5 μm，the amount of aphanitic graphite in NR compound had a critical value，the interaction between aphanitic graphite and NR was weak，the improvement of physical properties of NR compound was limited，and there was precipitation of graphite.When the particle size of aphanitic graphite was 2 μm，the physical properties of NR compound could be improved obviously with only small amount of graphite.
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