Preparation and properties of transparent antibacterial and anti-mildew PC
Antibacterial and anti-mildew materials are widely used in medical devices,household appliances and other fields.Transparent antibacterial and anti-mildew polycarbonate(PC)were prepared by melt blending method with PC and glass-based anti-bacterial agents as main raw materials.The effect of the antibacterial agents and their different dosage on the antibacterial and anti-mildew,light transmittance,haze,mechanical and thermal properties of the obtained materials were investigated.The results show that compared to ordinary antibacterial PC materials,the obtained antibacterial PC prepared with glass based antibacterial agents not only have excellent antibacterial and anti-mildew properties and mechanical properties,but also have higher transparency.The PC material prepared by antimicrobial agent AGZ-B has better broad-spectrum antibacterial properties and transparency compared to that with antimicrobial agent AGZ-A,but its notch impact strength and heat resistance decrease more at the same time.When the amount of antimicrobial agent AGZ-B is 1.5%,the bactericidal rate of the material against staphylococcus aureus and escherichia coli reach 99.9%,the anti-mildew grade is 1,the light transmittance is 78.7%,the haze is 58.4%,the notch impact strength is 13.7 kJ/m2,and vicat softening temperature is 138.4℃.The transparent,high antibacterial and mildew resistant PC material prepared by the antibacterial agent AGZ-B which meets the standard requirements in terms of antibacterial and mold resistant properties,trans-parency,strength,and heat resistance has been preliminarily applied to the high-end water purifier water tank.
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