文章摘要
Application of Aramid Pulp in NR Compound
Received:March 20, 2020  Revised:March 20, 2020
DOI：10.12136/j.issn.1000-890X.2020.05.0356
Key Words: NR；aramid pulp；masterbatch；vulcanization characteristics；physical property；tensile fatigue life
Author NameAffiliationE-mail
DING Jiawei Shandong Institute of Non Metallic Materials 42279325@qq.com 
DU Huatai Shandong Institute of Non Metallic Materials  
SUN Zhiyong* Shandong Institute of Non Metallic Materials sunzhiyong53@163.com 
LI Bin Shandong Institute of Non Metallic Materials  
LI Hui Shandong Institute of Non Metallic Materials  
SUN Guohua Shandong Institute of Non Metallic Materials  
MA Weidong Shandong Institute of Non Metallic Materials  
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Abstract:
      Four kinds of aramid pulp masterbatch were prepared by using Kevlar 1F538，Kevlar 1F1710，Twaron 1091 and Twaron 1095，and their effects on the properties of natural rubber（NR） compound were studied. The results showed that use of aramid pulp masterbatch could prolong the scorch time of the compound，shorten the optimal vulcanization time，and improve the hardness，modulus at 100% elongation，tensile strength，elongation at break，tear strength and tensile fatigue life of the vulcanizate. It was found that Twaron 1091 aramid pulp masterbatch was the best. The scorch time of the compound with Twaron 1091 aramid pulp masterbatch was prolonged by 29. 1%，the tensile strength of corresponding vulcanizate increased by 12. 4%，the tear strength increased by 17. 9%，the tensile fatigue life was prolonged by 35. 2%，and the dynamic storage modulus increased.
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