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影响乙烯-乙酸乙烯酯橡胶发泡的工艺因素

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  • Key Words:乙烯-乙酸乙烯酯橡胶;;发泡材料;;填充系数;;工艺参数;;泡孔质量;;物理机械性能

  • Abstract:以偶氮二甲酰胺作为发泡剂,采用膨胀法制备乙烯-乙酸乙烯酯(EVM)橡胶发泡材料,研究了填充系数以及硫化的温度、时间和压力等工艺参数对EVM橡胶发泡过程、泡沫的泡孔质量和物理机械性能的影响。结果表明,EVM胶料的填充系数达到90%以上可以获得表面平整、泡孔均匀的EVM橡胶泡沫,并且在103%时其综合物理机械性能较好。当发泡温度低于165℃时,硫化过程对温度比较敏感,温度较高时发泡过程对温度比较敏感。硫化温度为165～170℃、时间为4～6 min、采用高压硫化更有利于制得性能较好的低密度EVM橡胶泡沫。

  • Volume:v.36

  • Issue:01

  • Translation or Not:no

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