摘要
目的:探讨颜面赝复体配色颜料的适合加入量。方法:以MDX-4-4210硅橡胶为基质,按照国家标准要求,以未添加颜料的MDX-4-4210硅橡胶为对照,在相同条件下,对添加镉黄颜料浓度分别为0.1、0.15、0.2、0.25和0.3wt%的MDX-4-4210硅橡胶进行拉伸性能、撕裂性能和硬度等机械性能测定,采用SPSS10.0软件包对结果进行统计学分析。结果:随着颜料添加量的增多,MDX-4-4210硅橡胶扯断强度、扯断伸长率、撕裂强度和硬度均下降,各组之间有显著性差异;而永久变形率(3min后)几乎不发生改变,各组之间的差别无显著性,即硅橡胶的弹性性能相对稳定。结论:配色颜料加入量能够改变硅橡胶的机械性能。当颜料浓度大于或等于0.2wt%时,其机械性能发生显著变化。
PURPOSE： To determine the optimum pigments concentration on the physical and mechanical properties.METHODS： In this study,control samples were prepared from MDX-4-4210 silicone base and tested along with the pigmented samples for comparison in accordance with the national standards.The pigments concentration to base elastomer was set at 0.1,0.15,0.2,0.25,0.3wt%,respectively;while other conditions were kept same,then the major physical properties of the elastomer were studied with a tensile tester.The data was processed with SPSS10.0 software package.RESULTS： When comparing the pigmented samples with the control,the tensile strength,the ultimate elongation,the tear resistance and the Shore A hardness of the MDX-4-4210 silicone elastomer was affected by the addition of the pigments.A decrease was found,while,the incorporation of pigments had no effect on the permanent deformation rate of the resulting elastomer by the addition of the pigments.CONCLUSIONS： The results obtained from physical and mechanical testing of pigmented silicone samples suggest that incorporation of 0.2wt% by weight of pigments can alter the initial physical and mechanical behavior of the base elastomer..
出处
《上海口腔医学》
CAS
CSCD
2011年第1期1-5,共5页
Shanghai Journal of Stomatology
基金
国家自然科学基金(30630066)~~
关键词
硅橡胶
机械性能
颜料
Silicone elastomer
Mechanical properties
Pigments
