文章摘要
Effects of HEMA Grafted NR on Properties of Silica/NR Composites
Received:December 07, 2021  Revised:December 07, 2021
DOI：10.12136/j.issn.1000-890X.2022.08.0597
Key Words: NR；HEMA；grafting；silica；composite；tensile strength；compression fatigue heat build-up
Author NameAffiliationE-mail
LIU Hongchao Agricultural Products Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences lhc2012168@163.com 
WANG Qifang Agricultural Products Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences  
WANG Yueqiong Agricultural Products Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences  
LIN Wending Agricultural Products Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences  
LI Yongzhen Agricultural Products Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences  
YU Heping* Agricultural Products Processing Research Institute，Chinese Academy of Tropical Agricultural Sciences 1619219853@qq. com 
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Abstract:
      The effects of graft ratio and amount of 2-hydroxyethyl methacrylate （HEMA） grafted natural rubber （NR）（NR-g-HEMA） on the properties of silica/NR composites were investigated. The results showed that，compared with the silica/NR composites without NR-g-HEMA，the vulcanization rate， cross-link degree，Shore A hardness，modulus and tear strength of the silica/NR composites with NR-g- HEMA increased，and the compression fatigue temperature rise decreased significantly. When NR-g-HEMA grafting rate was 10% and amount was 10 phr，the tensile strength of silica/NR composites was the largest， and the compression fatigue temperature rise was the lowest. NR-g-HEMA had good compatibility with NR， silica was more uniformly dispersed in the rubber phase with the addition of NR-g-HEMA，and the silica and rubber had stronger interfacial bonding effect.
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