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无机填料对乙烯-乙酸乙烯酯橡胶/聚乳酸共混体系阻尼性能的影响

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  • Key Words:乙烯-乙酸乙烯酯橡胶;;聚乳酸;;阻尼性能;;白炭黑;;介孔二氧化硅;;玻璃微珠;;力学性能;;微观形貌

  • Abstract:以过氧化二异丙苯为交联剂,三烯丙基异氰脲酸酯为助交联剂,在Haake转矩流变仪中通过熔融共混法制备了乙烯-乙酸乙烯酯橡胶/聚乳酸(EVM/PLA)共混物,采用动态黏弹谱仪考察了白炭黑、介孔SiO2、玻璃微珠3种无机填料对共混物阻尼性能的影响,并用透射电子显微镜观察了3种填料的微观形貌。结果表明,填充30份白炭黑时,EVM/PLA共混物的有效阻尼温域拓宽为81℃,均高于二者单独使用时的有效阻尼温域;白炭黑分别与少量介孔SiO2和玻璃微珠并用(总量为30份)时,共混物的有效阻尼温域分别拓宽至86℃和85℃,阻尼性能提高,且共混物仍能保持较好的力学性能,尤其是永久变形明显下降,这与介孔SiO2和玻璃微珠独特的微观结构有关。

  • Volume:v.37

  • Issue:02

  • Translation or Not:no

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