摘要
将107硅橡胶与氟硅橡胶共混,所制备的义齿软衬材料的耐介质性能明显提高,其拉伸强度增大。在人工唾液中浸泡30d后,氟硅橡胶质量分数为9%和15%的软衬材料剩余强度分别为83%和89%,相比于未加氟硅橡胶的软衬材料的剩余强度(60%)有很大提高;加入氟硅橡胶后,软衬材料的拉伸强度增大,断裂伸长率减小,表明共混物中两相的相容性较好;加入氟硅橡胶后,软衬材料的吸水率与溶解率都低于市场上已有软衬材料吸水率与溶解率的值,氟硅橡胶质量分数为9%的软衬材料吸水率为0.23%,溶解率为0.10%,这与基托树脂吸水率与溶解率的值(分别为0.25%、0.10%)最为接近。
The medium resistance of denture soft lining materials prepared by blending 107 silicone rubber and fluorosilieone rubber was improved remarkably,and the tensile strength of the product also increased. After being dipped in artificial saliva for 30d, the residual strength of the soft lining materials with fluorosilicone rubber of mass fractions 9% and 15% was 83% and 89% respectively, which were quite enhanced as compared with that （60%） of the soft lining materials with no fluorosilicone rubber. It is shown that compatibility of two phases in the co-blending polymers is better when fluorosilicone rubber is added, the tensile strength of the soft lining materials is enhanced, and their elongations at break decrease. Their water absorption and dissolution rate are smaller than those of soft lining materials in market after adding fluorosilicone rubber. When the mass fraction of fluorosilicone rubber is 9%, the water absorption and dissolution rate of the products （0.23%, 0.10%） are the nearest to those of the dental resin（0.25%,0.10%）.
出处
《化学推进剂与高分子材料》
CAS
2007年第2期62-65,共4页
Chemical Propellants & Polymeric Materials
关键词
硅橡胶
氟硅橡胶
共混
软衬
silicone rubber
fluorosilicone rubber
blend
soft lining
