Abstract: PVC/microbicidal nanometer-SiOx powder composite materials were prepared by direct melt blending. When the loading of microbicidal nanometer-SiOx powder was 1wt%, the bactericidal rates for E.coli and S.aureus were 92% and 89%, respectively. The microbicidal composites possessed a long-term antibacterial and a toughening effect. The tensile and impact strengths of the composite increased 66.3% and 124.1%, respectively. Electric probe with plane element-scanning showed that microbicidal SiOx nanoparticles were finely dispersed in PVC matrix.

Key words: nanometer powder, FONT-FAMILY: Arial, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体">poly (vinyl chloride)FONT-FAMILY: 宋体, mso-ascii-font-family: Arial, mso-hansi-font-family: Arial, mso-bidi-font-family: Arial, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA">, FONT-FAMILY: Arial, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, mso-fareast-font-family: 宋体">microbicidal material