无卤复配阻燃剂在天然橡胶中的应用研究  

Research on Application of Halogen-free Compound Flame Retardants in NR

作　　者：贾宇辉 梁玉蓉 沈瑞冰 郑慧文 梁倩 张杭杭 JIA Yuhui;LIANG Yurong;SHEN Ruibing;ZHENG Huiwen;LIANG Qian;ZHANG Hanghang(Taiyuan Institute of Technology,Taiyuan 030008,China)

机构地区：[1]太原工业学院材料工程系,山西太原030008

出　　处：《橡胶工业》2025年第1期39-44,共6页China Rubber Industry

基　　金：国家自然科学基金资助项目(51573124)。

摘　　要：将氢氧化镁分别与炭黑N330、白炭黑、硼酸锌复配制得的无卤复配阻燃剂添加到天然橡胶(NR)中制备NR复合材料,对NR复合材料的性能进行研究。结果表明:随着氢氧化镁用量的增大,单一阻燃剂和复配阻燃剂NR复合材料的交联程度增大,硬度增大,拉伸强度和拉断伸长率减小;在复配阻燃剂用量相同时,氢氧化镁/白炭黑复配阻燃剂NR复合材料的拉伸性能最好;与单一阻燃剂NR复合材料相比,复配阻燃剂NR复合材料的极限氧指数显著增大,阻燃性能好;与单一阻燃剂NR复合材料相比,复配阻燃剂NR复合材料的热稳定性更好,残炭率更大,氢氧化镁/硼酸锌复配阻燃剂NR复合材料的热稳定性能最好。The halogen-free compound flame retardants prepared by compounding magnesium hydroxide with carbon black N330,silica and zinc borate respectively 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 compound flame retardants increased,the hardness increased,and the tensile strengths and elongations at break decreased.At the same amount of compound flame retardants,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 limiting oxygen indies of the NR composites with the compound flame retardants significantly increased,and the flame retardant properties were better.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.

关 键 词：无卤复配阻燃剂 天然橡胶 氢氧化镁 协效阻燃 热稳定性 

分 类 号：TQ330.387[化学工程—橡胶工业] TQ332.6