聚酰胺46/氧化石墨烯纳米复合材料结晶性能和热性能  

Crystalline Behaviors and Thermal Properties of Polyamide 46/Graphene Oxide Nanocomposites

作　　者：范晓庆[1] 陈枫[1] 杨晋涛[1] 范萍[1] 费正东[1] 张卫华 徐淑芬 钟明强[1] 

机构地区：[1]浙江工业大学化材学院,浙江杭州310014 [2]杭州本松工程塑料有限公司,浙江杭州311106

出　　处：《高分子材料科学与工程》2015年第2期46-50,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21274131;51273178和51203139);浙江省自然科学基金资助项目(LQ12E03004和LY12E03004);浙江省科技厅公益性项目(2012c21054)

摘　　要：利用溶液共混法成功制得聚酰胺46(PA46)/氧化石墨烯(GO)纳米复合材料。通过透射电镜观察得到氧化石墨烯在聚酰胺46中的纳米尺度的分散情况,差示扫描量热法的测试结果说明极少量的氧化石墨烯的加入可以对聚酰胺46的结晶起成核剂的作用,进一步通过Avrami方程分析得知受限制的环境使结晶生长的维度下降。聚酰胺46的熔点随着添加0.1%氧化石墨烯含量时升高了2.6℃,其热稳定性和动态力学性能也随之提高。Polyamide 46(PA 46)/graphene oxide(GO) nanocomposites were successfully prepared through a solution mixing technique. Transmission electron microscopy shows nanoscale dispersion of GO within the PA 46 matrix. Differential scanning calorimetry results illustrate that adding a small amount of GO facilitates nucleation of PA 46. Avrami analysis shows a decrease in the dimension of PA 46 crystal growth in the composites because of a constrained environment formation. The equilibrium melting temperature(Tm) of PA 46 increases in the composites,with an increase of 2.6 ℃ at 0. 1% GO loading. The thermal stability and dynamic mechanical property of nanocomposites are also improved.Laser flash analysis exhibits that the thermal conductivity of nanocomposites increases 50% compared with that of neat PA 46.

关 键 词：聚酰胺46 氧化石墨烯 结晶性能 热性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TB332