中文

退火对聚乳酸/多壁碳纳米管复合材料拉伸性能的影响

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  • Key Words:聚乳酸;;碳纳米管;;复合材料;;拉伸性能;;退火

  • Abstract:用溶液法制备了聚乳酸/多壁碳纳米管(PLA/MWNTs)复合材料,研究了退火处理对该复合材料拉伸性能的影响,并通过DSC和XRD表征对因退火导致的PLA/MWNT s复合材料拉伸性能的变化原因进行了研究。结果表明,硅烷偶联剂可提高MWNTs在PLA中的分散性,并提高所得复合材料的强度。80℃退火处理可以提高纯PLA和PLA/MWNTs复合材料的结晶度和拉伸强度,用硅烷对MWNTs进行表面处理可大大提高复合材料的屈服强度。MWNTs或f-MWNTs可作为异相成核剂,在制备过程或退火处理过程中诱导PLA分子链有序排列,提高复合材料的结晶速度、结晶度和强度。

  • Volume:v.32;No.130

  • Issue:03

  • Translation or Not:no


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