摘要
采用固相剪切碾磨方法成功制备了聚氯乙烯(PVC)-高岭土复合粉体,实现了高岭土的片层剥离和在PVC基体中的纳米分散及对PVC的同步增强增韧。通过X射线衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)表征了PVC-高岭土纳米复合材料的结构,研究了其力学性能。结果表明,30次碾磨,高岭土的特征衍射峰几乎消失,高岭土以约30 nm片层厚度均匀分散于PVC基体,径厚比超过10。与简单填充复合方法相比,固相剪切碾磨技术制备的PVC/高岭土纳米复合材料的力学性能有较大提高。在高岭土质量分数为4%时,断裂伸长率由87.3%提高到274.6%,提高了214.7%;拉伸强度由47.7 MPa提高到54.0 MPa。
Solid state shear compounding technology（S3C） based on pan-milling is an effective method to prepare polymer/layered mineral composites with nano intercalating structure.The PVC/ kaolin nanocomposites were successfully prepared by S3C at ambient temperature The structure and properties of PVC/Kaolin nanocomposites prepared were investigated by XRD,SEM,TEM and mechanical tests.The results show that the mechanical properties of PVC/Kaolin nanocomposites prepared through S3C based on pan-milling 30 cycles are remarkably improved compared with conventional filled composites.The elongation of PVC / Kaolin nanocomposites with 4% Kaolin is 274.6%,tensile strength is 54.0 MPa,at the same time,the notched impact strength is 4.9 kJ/m2.S3C realizes synchronously pulverizing,dispersion and compounding of PVC with kaolin through 25 ～30 cycles pan milling.The strip flake of Kaolin particles with thickness less than 30 nanometer and the aspect ratio of 10 times disperses homogeneously in the PVC matrix.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2011年第11期114-117,共4页
Polymer Materials Science & Engineering
基金
陕西省“13115”科技创新工程重大科技专项(2009ZDKG-62)
高分子材料工程国家重点实验室开放课题
陕西省教育厅自然科学专项(06JK241)资助
作者简介
通讯联系人：李侃社，主要从事高分子材料研究，E-mail：likanshe@xust．edu．cn
