Abstract: The properties of polymer-nanocomposites are presented and the preparation methods are classified into four categories：directly blending nano-units with polymer，in-situ synthesizing，in-situ synthesizing nano-units with monomer polymerizing and in-situ synthesizing synchronously in two phases. Finally the applications of polymer nanocomposites are introduced.

摘要： 简述了聚合物基纳米复合材料的特性，介绍了聚合物基纳米复合材料的制备方法，包括纳米颗粒填充法、纳米微粒原位合成法、聚合物基体原位聚合法、两相同步原位合成法的合成工艺和特点，并对聚合物基纳米复合材料的应用进行了概括。