碳纳米管增强义齿基托机械性能的实验研究  

A Pilot Study on Carbon Nanotube-Reinforced Denture Base

作　　者：刘东菲[1] 梁春永[2] 陈苗苗[1] 李长义[1] 张连云[1] 

机构地区：[1]天津医科大学口腔医院,300070 [2]河北工业大学材料科学与工程学院

出　　处：《天津医药》2008年第11期853-855,共3页Tianjin Medical Journal

基　　金：河北省科学技术研究与发展指导计划资助项目(项目编号:07215136)

摘　　要：目的:研究碳纳米管的加入对义齿基托机械性能的影响。方法:在37g义齿基托树脂中分别加入经硝酸纯化的0.1、1、2mg多壁碳纳米管,以未加入碳纳米管树脂为对照组,通过M350-20KN型万能材料实验机测试其拉伸强度等机械性能,并用扫描电镜观察其断面形貌。结果:加入1mg碳纳米管的基托树脂拉伸强度、延伸率高于对照组,弹性模量较纯树脂体降低;拉伸强度在加入量为1mg时达最大值,较纯树脂体提高了9.4%,碳纳米管含量继续增加时导致基托树脂机械性能的下降。电镜结果显示碳纳米管在基质中分布均匀。结论:碳纳米管能提高义齿基托的机械性能,加强义齿固位,延长义齿使用寿命。Objective：To study mechanical properties of carbon nanotube（CNT）-reinforced denture base.Methods：The multi-walled CNTs of 0.1 mg,1 mg and 2 mg were added in 37 g denture base resin.The denture base with no CNTs treatment served as the control.The mechanical properties of CNT-reinforced denture base were tested by M350 -20KN Universal test machine.The microstructures were investigated with a scanning electron microscope（SEM）.Results：The results indicated that the denture base with CNTs had higher tensile strength and elongation,and lower modulus of elasticity than those of control group.With 1 mg of CNTs,the denture base had the best mechanical properties,and the tensile strength increased by 9.4% .The mechanical properties decreased with CNTs increased.The results of SEM showed that CNTs distributed evenly in the matrix.Conclusion：The CNTs enhanced mechanical properties of denture base,strengthen denture retention,and extend the life of the denture.

关 键 词：义齿基托 纳米管 碳 聚甲基丙烯酸类 义齿 

分 类 号：R783.6[医药卫生—口腔医学] R446.19[医药卫生—临床医学]