Jingri REN
,
Kyohan Kim
,
Seock Sam Kim
材料科学技术（英文）
The fracture and tribological evaluation of dental composite resin containing pre-polymerized particle fillers were investigated. Composite resins, e.g. metafil, silux plus, heliomolar and palfique estelite were selected as specimens in order to evaluate the effects of pre-polymerized particle filler on the fracture and wear characteristics of composite resins. In the wear tests, a ball-on-flat wear test method was used. The friction coefficient of metafil was quite high. The wear resistance of silux plus and palfique estelite was better than that of metafil and heliomolar under the same experimental condition. The main wear mechanism of composite resins containing pre-polymerized particle fillers was an abrasive wear by brittle fracture of pre-polymerized particles and by debonding of fillers and matrix.
关键词:
Composite resin
,
null
,
null
,
null
,
null
楚亚卿
,
仝毅
,
黄风雷
,
张同来
新型炭材料
采用3种不同粒径的纳米金刚石与树脂基体、光固化剂和其他填料复合，合成光固化复合树脂。探讨纳米金刚石对光固化复合树脂挠曲强度、固化深度等性能的作用规律。结果表明，纳米金刚石可显著地增强树脂的挠曲强度、弹性模量等机械性能，但也会降低树脂的固化深度。发现纳米金刚石对光固化复合树脂的增强作用中存在逾渗现象，即当纳米金刚石含量达到一定数值后会导致树脂的机械性能明显降低。性能最佳的光固化复合树脂应该选择粒径为220 nm的纳米金刚石，其添加量在0.15%左右为宜。
关键词:
纳米金刚石
,
光固化
,
复合树脂
,
逾渗
,
增强
