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氢氧化铝和硼酸锌对乙烯-乙酸乙烯酯橡胶/丁腈橡胶共混胶阻燃性能的影响

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  • Key Words:乙烯-乙酸乙烯酯橡胶;;丁腈橡胶;;共混胶;;氢氧化铝;;硼酸锌;;极限氧指数;;阻燃性能

  • Abstract:以氢氧化镁(MDH)作乙烯-乙酸乙烯酯橡胶(EVM)/丁腈橡胶(NBR)共混胶的阻燃剂,运用极限氧指数(LOI)法和锥形量热仪,研究了分别并用少量氢氧化铝(ATH)和硼酸锌对共混胶阻燃性能的影响。结果表明,当添加相同份数的阻燃剂时,MDH与ATH并用和单独使用MDH相比,共混胶的LOI相差不大,但并用少量ATH可以明显延长点燃时间,降低总释放热。添加硼酸锌后,EVM/NBR/MDH体系的阻燃性能提高,添加20份以上硼酸锌,共混胶的点燃时间明显延长,热释放速率峰值明显下降;添加140份MDH时并用20份硼酸锌,共混胶的火灾性能指数最高,阻燃效果最好。

  • Volume:v.35

  • Issue:05

  • Translation or Not:no

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