Study On The Multi-Function NanoZnO Antibacterial Compound Master Batch

Use the coupling agent and the dispersing agent carry on the surface treatment to nanometer ZnO. Acrylate and styrene were selected as monomers in preparation of core-shell structure by in-situ polymerization with bacterial resistant nanoZnO modified by titanate coupling agent, and water-soluble carboxymethyl cellulose sodium(CMC-Na) was used as dispersing agent to prepare nanoZnO/styrene-acrylate blending composite latex. Effect of nanoZnO surface modified was evaluated by angle of contact,activating index, oil-loving degree and infrared spectrogram. spread the membrane performance, bacterial resistance and ultraviolet screen of nanoZnO composite latex were also systemic researched. Around also has prepared the modified nanoZnO/Acrylontrile-butadienen-styrene (ABS) and nanoZnO/ polypropylene(PP) copolymer composites. Effects of modified nanoZnO content on bacterial resistance, vicat softening temperature, mechanical properties as well as nanoZnO/PP compound material low temperature impact intensity of the composites before and after UV aged were investigated. Above studies indicated that, the activating index and oil-loving degree of modified nanoZnO was maximum when coupling agent content was 10% of nanoZnO; dispersivity of modified nanoZnO was optimum as pH value was 5～6 and CMC-Na content is 3%; excellent membrane performance, bacterial resistance and ultraviolet screen of composite latex could be attained when modified nanoZnO content was 0.1%～0.4%.and not only vicat softening temperature and mechanical properties of the composites could be improved, but also excellent anti-aging protectivity could be attained by adding modified nanoZnO properly. Vicat softening temperature of ABS composite with 3% modified nanoZnO was 102℃, which was 3.2% higher than that of pure ABS resin; Comparing to pure ABS, strength, breaking elongation, hardness, impact strength(with and without notch) of the composite with 3% modified nanoZnO before and after UV aged were increased by 37.4% and 44.6%, 0.9% and 357%, 44% and 29%, 13.8% and 44.7% (with notch), 44.4% and 12.4%(with notch).; to the backwoods coli, the golden color staphylococcus bacteriostasis rate respectively achieves 92.3% and 87.5%;vicat softening temperature of PP composite with 3% modified nanoZnO was 162.2℃, which...