文章摘要
Effect of Silica/Coal Fly Ash Blend Ratios on Properties of NR Composites
Received:October 20, 2022  Revised:October 20, 2022
DOI：10.12136/j.issn.1000-890X.2024.09.0669
Key Words: NR；fly ash；silica；tensile property；dynamic mechanical property
Author NameAffiliationE-mail
ZHANG　Lin Qingdao University of Science and Technology 4020030064@mails.qust.edu.cn 
XU　Kai Shandong Huasheng Rubber Co., Ltd.  
ZHANG　Su Qingdao University of Science and Technology  
Zhao Chongxue Qingdao University of Science and Technology  
Wang Haitong Qingdao University of Science and Technology  
Lin Guangyi* Qingdao University of Science and Technology gylin666@163.com 
GENG Chuanbao Qingdao University of Science and Technology  
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Abstract:
      Using silane couple agent to graft modified silica and coal fly ash separatly，the effect of silica/coal fly ash blend ratios on the properties of natural rubber（NR）/silica/coal fly ash composites was studied.The results showed that，as the increasing of coal fly ash amount，the Payne effect of NR composite was significantly weakened，this was because coal fly ash promoted the dispersion of filler（silica/coal fly ash system） in rubber matrix.As the increasing of coal fly ash amount，the tensile strength and elongation at break of NR composite first increased and then decreased.When the silica/coal fly ash blend ratio was 30/10，the tensile strength of NR composite was the highest，and the elongation at break retention rate after 80 ℃×72 h heat air aging was larger.As the increasing of coal fly ash amount，the loss factors at 0 and 60 ℃ of NR composite decreased，and the wet sliding resistance and rolling resistance decreased.
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