PREPARATION AND PROPERTIES OF NANO-CALCIUM CARBONATE MODIFIED PVC USING ULTRASONIC IRRADIATION
PVC/nano-CaCO3 composites were prepared through ultrasonic irradiation. The optimum time of ultrasonic irradi-ation is 30 min. The fracture toughness of the nanocomposites was investigated by J-integral method based on the mechanical properties and morphology. Compared with corresponding nanocomposites and unfilled PVC, the prepared nanocompo-sites exhibit outstanding mechanical performances. The me-chanical properties of spindly shaped CaCO3 filled PVC are better than these of the cubic nano-CaCO3, which are likely attributed to high aspect ratio of spindly shaped nano-CaCO3.In addition, the mechanical properties of PVC/nano-CaCO3 composites can be improved considerably when the content of nano-CaCO3 is 5-15 phr. Ultrasonic irradiation realizes the excellent dispersion of nanoparticles in the PVC, and offers a new way to deal with the challenges encountered in preparing polymer/nanocomposites materials.
PVC nano-CaCO3 ultrasonic irradiation J-integral nanocomposites
Shengfei Hu Wen Chen Huaxing Li
Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China; Institute of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China School of Chemical and Environmental Engineering, Hubei University of Technology, Wuhan 430068, Chin
国际会议
海南三亚
英文
2007-01-10（万方平台首次上网日期，不代表论文的发表时间）