离子交换法制备载银型高强度抗菌玻璃及性能研究
发布时间：2018-07-23 19:57
【摘要】：有害细菌影响着人们的身体健康,威胁着人类社会的正常运作,因而对抗菌材料的研究得到了人们的高度重视。目前抗菌材料研究较为广泛的是无机抗菌材料,其中银系无机抗菌材料更是得到了长足的发展。抗菌玻璃作为无机抗菌材料的一类,在日常生活中有着重要的应用价值。本文采用银系无机抗菌剂制备高强度抗菌玻璃。本文选用Na2O-Ca O-Si O2系玻璃基体,在不显著影响玻璃原有性能的前提下,采用离子交换法对玻璃表面进行改性,将抗菌剂Ag+植入玻璃表层,制备出对大肠杆菌、金黄色葡萄球菌等细菌具有优异抗菌性能的载银型高强度抗菌玻璃。通过分析抗菌玻璃的表面应力值、银含量、透过率、色谱关系和抗菌率的变化情况,研究了不同的原料配方、工艺参数对抗菌玻璃性能的影响。研究表明,采用两步离子交换法制得的抗菌玻璃表面应力值高于580MPa,达到了高强度要求。随着银离子交换时间从1min增加到10min和混合熔盐Ag NO3含量从0.05wt%增大到0.25wt%,抗菌玻璃的载银量从1.19wt%增加到7.53wt%,总透过率从89.60%降到80.22%,颜色从基本无色透明变化为淡黄色、棕黄色,抗菌率从95%左右上升到99.99%。抗菌玻璃的生产、使用需满足多种要求,本实验选取8-0.10-4、8-0.10-6、8-0.15-2、8-0.15-4等样品的工艺参数作为最佳工艺参数,即银交换温度420℃,混合熔盐银浓度为0.10wt%,银交换时间为4min~6min,或者混合熔盐银浓度为0.15wt%,银交换时间为2min~4min。采用最佳工艺参数所制备得到的抗菌玻璃成本较低,透过率高且着色浅,抗菌性能优异。研究表明,银离子交换温度同样会影响抗菌玻璃的性能。400℃的样品和440℃的样品的银含量都比420℃样品略低,因此总透过率增大,颜色变浅,抗菌率降低。实验结果表明,采用一步离子交换法制备得到的抗菌玻璃不具有高强度特点;为了获得较为合适的载银量,需要延长银交换时间。银离子交换时间从10min增加到30min,抗菌玻璃载银量从2.28wt%增大到5.02wt%,总透过率从87.67%下降为82.64%,颜色从浅黄变为棕黄,抗菌率从96.04%提高到99.99%。
[Abstract]:Harmful bacteria affect people's health and threaten the normal operation of human society, so people attach great importance to the research of antimicrobial materials. At present, inorganic antimicrobial materials are widely studied, among which silver inorganic antibacterial materials have been greatly developed. Antibacterial glass, as a kind of inorganic antibacterial material, has important application value in daily life. In this paper, high strength antibacterial glass was prepared with silver-based inorganic antimicrobial agent. In this paper, the surface of Na2O-Ca O-Si O 2 glass was modified by ion exchange method, and the antibacterial agent Ag was implanted into the surface of glass to prepare Escherichia coli under the condition that the original properties of the glass were not significantly affected. Staphylococcus aureus and other bacteria with excellent antibacterial properties of silver-loaded high-strength antibacterial glass. By analyzing the changes of surface stress value, silver content, transmittance, chromatographic relationship and antibacterial rate of antibacterial glass, the effects of different raw materials and technological parameters on the properties of antibacterial glass were studied. The results show that the surface stress value of the antibacterial glass obtained by two-step ion exchange method is higher than 580MPa, which meets the requirement of high strength. With the increase of silver ion exchange time from 1min to 10min and mixed molten salt Ag NO3 from 0.05wt% to 0.25wt%, the silver content of antibacterial glass increased from 1.19wt% to 7.53wt.The total transmittance decreased from 89.60% to 80.22wt%, and the color changed from basic colorless and transparent to yellowish, brownish yellow. The antibacterial rate increased from 95% to 99.99%. The production of antimicrobial glass should meet many requirements. In this experiment, the technological parameters of 8-0.10-4, 8-0.10-6, 8-0.15-2, 8-0.15-4, etc. were selected as the optimum technological parameters, that is, the exchange temperature of silver was 420 鈩，
本文编号：2140481
[Abstract]:Harmful bacteria affect people's health and threaten the normal operation of human society, so people attach great importance to the research of antimicrobial materials. At present, inorganic antimicrobial materials are widely studied, among which silver inorganic antibacterial materials have been greatly developed. Antibacterial glass, as a kind of inorganic antibacterial material, has important application value in daily life. In this paper, high strength antibacterial glass was prepared with silver-based inorganic antimicrobial agent. In this paper, the surface of Na2O-Ca O-Si O 2 glass was modified by ion exchange method, and the antibacterial agent Ag was implanted into the surface of glass to prepare Escherichia coli under the condition that the original properties of the glass were not significantly affected. Staphylococcus aureus and other bacteria with excellent antibacterial properties of silver-loaded high-strength antibacterial glass. By analyzing the changes of surface stress value, silver content, transmittance, chromatographic relationship and antibacterial rate of antibacterial glass, the effects of different raw materials and technological parameters on the properties of antibacterial glass were studied. The results show that the surface stress value of the antibacterial glass obtained by two-step ion exchange method is higher than 580MPa, which meets the requirement of high strength. With the increase of silver ion exchange time from 1min to 10min and mixed molten salt Ag NO3 from 0.05wt% to 0.25wt%, the silver content of antibacterial glass increased from 1.19wt% to 7.53wt.The total transmittance decreased from 89.60% to 80.22wt%, and the color changed from basic colorless and transparent to yellowish, brownish yellow. The antibacterial rate increased from 95% to 99.99%. The production of antimicrobial glass should meet many requirements. In this experiment, the technological parameters of 8-0.10-4, 8-0.10-6, 8-0.15-2, 8-0.15-4, etc. were selected as the optimum technological parameters, that is, the exchange temperature of silver was 420 鈩，
本文编号：2140481
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