摘要
目的:评估臭氧老化作用对SY-28硅橡胶机械性能的影响。方法:按照国家标准,对SY-28和MDX-4-4210硅橡胶臭氧老化前后的扯断强度、扯断伸长率、永久变形率(3min后)、撕裂强度、硬度(邵氏A)进行测试,并对其老化性能加以评价。结果:经臭氧老化作用处理,SY-28硅橡胶的永久变形率和邵氏硬度优于MDX-4-4210硅橡胶;扯断强度、扯断伸长率和撕裂强度与MDX-4-4210硅橡胶相似。结论:SY-28硅橡胶机械性能优良,同时具有良好的耐臭氧老化性能。
Objective： To evaluate the effects of ozone aging on the mechanical properties of SY-28 silicone elas-tomer. Method： Ten test specimens of SY-28 silicone elastomer were prepared, then the major mechanical properties of the elastomer were tested and measured before and after ozone aging according to the national standards,and compared with those of MDX-4-4210 in the same condition.The properties tested were selected because of their clinical significance for fabricating a facial prosthesis. Result：The results revealed that the permanent deformation rate and the hardness of SY-28 were superior to those of MDX-4-4210. The tensile strength, the elongation at break and the tear resistance of SY-28 were similar to those of MDX-4-4210. Conclusion： The SY-28 silicone elastomer have suitable mechanical and anti-ozone aging properties.
出处
《临床口腔医学杂志》
2008年第6期339-341,共3页
Journal of Clinical Stomatology
基金
国家自然科学基金资助(30471908)
关键词
臭氧老化
硅橡胶
机械性能
ozone
aging
silicone elastomer
mechanical properties
