臭氧老化作用对SY-28硅橡胶机械性能的影响  

Effects of ozone aging on the mechanical properties of SY-28 silicone elastomer

作　　者：苏方[1] 赵铱民[2] 邵龙泉[3] 苏玉兴[4] 

机构地区：[1]解放军总医院口腔医学研究所,北京100853 [2]第四军医大学口腔医学院 [3]南方医科大学南方医院口腔科 [4]北京黄寺美容外科医院口腔科

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)

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.

关 键 词：臭氧老化 硅橡胶 机械性能 

分 类 号：R783.1[医药卫生—口腔医学]