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- 2018
纳米颗粒共掺杂对玻璃离子水门汀性能影响
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Abstract:
摘要 目的:评价纳米二氧化钛和纤维素共掺杂对玻璃离子水门汀机械性能及抗菌效果的影响。方法:实验共分3组,2wt%二氧化钛组(T)、2wt%二氧化钛+0.4wt%纳米纤维素的共掺杂组(C)以及未改性水门汀的对照组(CG)。利用万能材料试验机、摩擦磨损试验机分别测试各组材料的抗压性能、摩擦系数和磨损量,菌落计数法评价材料对白色念珠菌的抗菌效果。结果:与未改性组相比,共掺杂组的抗压强度提高了21.8%(P<0.001);磨损量降低为35.9%(P<0.001);抗菌效果提高到92.3％(P<0.001)。扫描电镜可见C组的裂纹显著减少。结论:纳米纤维素和纳米二氧化钛共掺杂显著提高了玻璃离子水门汀的抗压性能、耐磨性以及抗菌效果
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