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制备了Cu2+、Zn2+、Cu2+-Zn2+复合型斜发沸石基抗菌剂,结合正交试验得出了制备Cu2+型斜发沸石基抗菌剂的适宜条件。将各型抗菌剂与聚丙烯(PP)、接枝PP混熔后制得高浓度抗菌母粒,再按一定比例加入到PP中制备PP抗菌塑料,并对PP抗菌塑料的力学性能和抗菌性能进行了研究。结果表明:制备各型斜发沸石基抗菌剂的适宜条件为交换温度60℃、交换时间8 h、交换液浓度为0．08 mol／L;加入3％的抗菌母粒(或1．5％的抗菌剂)对PP 力学性能的影响较小,PP抗菌塑料具有良好的抗细菌性能,对大肠杆菌和金黄色葡萄球菌的抑菌率都超过95％。此外,Cu2+-Zn2+复合型斜发沸石基抗菌塑料中存在Cu2+和Zn2+协同抗菌效应。
Cu2 +, Zn2 +, Cu2 + -Zn2 + composite clinoptilolite antibacterial agents were prepared. The suitable conditions for preparing Cu2 + type clinoptilolite antibacterial agent were obtained by orthogonal experiment. The antibacterial agent of various types is mixed with polypropylene (PP) and grafted PP to obtain high concentration antibacterial masterbatch, and then added into PP according to a certain proportion to prepare PP antibacterial plastic, and the mechanical property and antibacterial property of PP antibacterial plastic Were studied. The results showed that the optimal conditions for preparation of various clinoptilolite antibacterial agents were as follows: exchange temperature 60 ℃, exchange time 8 h, exchange solution concentration 0.08 mol / L; adding 3% antibacterial masterbatch (or 1.5% Antibacterial agent) has little effect on the mechanical properties of PP, PP antibacterial plastic has good antibacterial properties, the inhibition rate of E. coli and Staphylococcus aureus are more than 95%. In addition, Cu2 + -Zn2 + composite clinoptilolite-based antibacterial plastic Cu2 + and Zn2 + synergistic antimicrobial effect.