文章摘要
Research on Application of Halogen-free Compound Flame Retardants in NR
Received:March 30, 2023  Revised:March 30, 2023
DOI：10.12136/j.issn.1000-890X.2025.01.0039
Key Words: halogen-free compound flame retardant；NR；magnesium hydroxide；synergistic flame retardancy；thermal stability
Author NameAffiliationE-mail
JIA Yuhui Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan jyh639263@163.com 
LIANG Yurong* Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan liangyr7103@aliyun.com 
SHEN Ruibing Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan  
ZHENG Huiwen Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan  
LIANG Qian Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan  
ZHANG Hanghang Department of Materials Engineering,Taiyuan Institute of Technology,Taiyuan  
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Abstract:
      The halogen-free compound flame retardants prepared by compounding magnesium hydroxide with carbon black N330，silica and zinc borate were added to natural rubber（NR） to prepare the NR composites，and the properties of the NR composites were studied.The results showed that，with the increase of the magnesium hydroxide amount，the crosslinking degrees of the NR composites with single flame retardants and composite flame retardants increased，the hardnesses increased and the tensile strengths and elongations at break decreased.When the compound flame retardant amount was the same，the tensile properties of the NR composite with the magnesium hydroxide/silica compound flame retardant were the best.Compared with the NR composites with single flame retardants，the ultimate oxygen indies of the NR composites with the compound flame retardants significantly increased and the flame retardant properties were good.Compared with the NR composites with the single flame retardants，the thermal stabilities of the NR composites with the compound flame retardants were better，the residual carbon rates were higher.The thermal stability of the NR composite with the magnesium hydroxide/zinc borate compound flame retardant was the best.
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