【作者】 邱凡珠；

【导师】 张华集；

【作者基本信息】 福建师范大学 ， 材料加工工程， 2008， 硕士

【摘要】 以EVA为基本原料,载锌抗菌粉、载银磷酸锆为抗菌剂,硼酸酯、铝酸酯、硅烷偶联剂为改性剂,通过偶联改性、双辊混炼、模压交联发泡方法,制备抗菌EVA发泡材料。采用红外光谱法、黏度法、吸水性测定法进行评价;用扫描电镜、无转子硫化仪等仪器进行观察分析,同时测试了材料的交联发泡性能、物理力学性能、抗菌性能。研制稀有金属氧化物（CeO₂、La₂O₃、ZrO₂）掺杂载银磷酸锆为抗菌剂,制备抗菌EVA发泡材料,探讨CeO₂、La₂O₃、ZrO₂掺杂载银磷酸锆对EVA材料交联发泡性能、热分解温度、物理力学性能、抗菌率、耐水持效抗菌率、耐候持效抗菌率的影响。结果表明,在三种偶联剂中,硼酸酯对载锌抗菌粉和载银磷酸锆的偶联改性效果最好。添加2%载锌抗菌粉或1%载银磷酸锆的EVA材料,模压发泡过程中扭矩值降低,发泡气体压力增加,泡孔孔径增大,制成的发泡片材具有优良的物理力学性能和抗菌抑菌性能。La₂O₃、CeO₂、ZrO₂掺杂复合载银磷酸锆,明显提高抗菌EVA发泡材料的热分解温度和物理力学性能,含2.8%CeO₂、La₂O₃、ZrO₂掺杂复合载银磷酸锆的EVA发泡材料,物理力学性能优于普通EVA发泡材料,抗菌性能优于含1%载银磷酸锆的EVA发泡材料和含2%载锌抗菌粉的EVA发泡材料,且耐水持效抗菌性能和耐候持效抗菌性能优良。更多还原

【Abstract】 With EVA（ethylene vinyl acetate copolymer） as raw materials, zinc-loaded antibacterial powder and silver-loaded zirconium phosphate as antibacterial agents, aluminate, silane and borate as coupling agents, the antibacterial EVA foamed materials were prepared by means of coupling modification, twin-roll mixing and extruding, and compression molding cross-linked foaming. These coupling modification treatments were evaluated by FTIR, hygroscopic property and viscosity. Some instruments, for example, curometer and scanning electron microscopy （SEM）, were applied to analyze and observe these EVA samples. Meanwhile, the cross-linked foaming, mechanical and antibacterial properties were mensurated.The antibacterial EVA foamed materials were prepared through development of rare metals oxides （CeO₂、La₂O₃、ZrO₂） doped silver-loaded zirconium phosphate as antibacterial agents. The effects of the mentioned three antibacterial agents on some properties of the EVA samplels were investigated, such as cross-linked foaming properties, thermal decomposition temperature, mechanical properties, antibacterial rates, the water and weathering resistance of persistence antibacterial effects.The results showed that borate coupling agent was of the best modified effects on zinc-loaded antibacterial powder and silver-loaded zirconium phosphate among the mentioned three coupling agents. Compared with the EVA materials without antibacterial agents, the foaming gas pressure of EVA compounded with 2% zinc-loaded antibacterial powder or 1% silver-loaded zirconium phosphate increased during mould foaming process, and the cell size also enlarged, meanwhile, torque value decreased obviously. In a word, these EVA samples exhibit excellent mechanical and antibacterial properties. The presence of rare metals oxides （CeO₂、La₂O₃、ZrO₂） doped silver-loaded zirconium phosphate in the EVA foamed materials resulted in the improving of the thermal decomposition temperature and the mechanical properties significantly. Indeed, the mechanical properties of the foamed EVA antibacterial materials which contain 2.8% CeO₂、La₂O₃、ZrO₂ doped silver-loaded zirconium phosphate, are superior to the normal EVA foamed materials, and antibacterial properties are better than the EVA foamed materials containing 1% silver-loaded zirconium phosphate or 2% zinc-loaded antibacterial powder. Furthermore, the water and weathering resistance of persistence antibacterial effects are excellent.更多还原