Effect of Different Inorganic Antimicrobial Systems on Antimicrobial Performance of PE Water Supply Pipes
Antibacterial PE pipe materials were prepared by melt blending polyethylene(PE100)with nano zinc oxide(15 nm particle size and 30 nm particle size),nano silver and nano titanium dioxide,respectively,using a twin-screw extruder.And the antibacterial properties,DSC,tensile properties and impact properties were tested.It was shown that,the antimicrobial system of ZnO nanoparticles and silver nanoparticles was better than that of titanium dioxide;the antimicrobial rate of the composites with 15 nm ZnO of mass fraction 0.150%against Escherichia coli was higher than 99.9%,and the antimicrobial rate of the composites with 30 nm ZnO of mass fraction 0.500%against Escherichia coli was 99.7%,and the small size of ZnO antimicrobial agent had higher antimicrobial performance;the overall mechanical properties of the composites with high content of antimicrobial agent(mass fraction 1%TiO2)were reduced.
NETL
NSTL
万方数据
