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
贾宇辉 1梁玉蓉 1沈瑞冰 1郑慧文 1梁倩 1张杭杭1
作者信息
- 1. 太原工业学院 材料工程系,山西 太原 030008
- 折叠
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.
Abstract
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Key words
halogen-free compound flame retardant/NR/magnesium hydroxide/synergistic flame retardancy/thermal stability引用本文复制引用
出版年
2025
NETL
NSTL
万方数据