The influence of fusing conditions on the surface structure and morphology of SP1 SiO_2 in dental resin composites
- VernacularTitle:熔附条件对牙科复合树脂中SP1 SiO_2表面结构及形态的影响
- Author:
Yingli ZHANG
;
Baoquan LI
;
Hongchen SUN
- Publication Type:Journal Article
- Keywords:
] SP1 SiO2;
Fusing condition;
Surface structure;
Morphology
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To evaluate the influence of fusing conditions on the surface structure and morphology of the SP1 SiO2. Methods:The SP1 SiO2 samples were sintered under 500, 650, 800, 950 and 1 100 ℃ at a rate of 250 ℃/h and maintained for 10, 30 min, 3 h respectively. The surface structure was characterized by FT-IR. Results:The characteristic peak of Si-OH bond at 958 cm-1 took off gradually with the rising temperature and prolonged time. Under the conditions of 950 ℃ maintained for 10 min and 30 min, and 650 ℃ maintained for 3 h, it disappeared completely. The particles of the SP1 SiO2 became larger while the size distribution became narrow. Conclusion: Fusing conditions can affect the Si-OH content and the size of the SP1 SiO2, as well as the size of distribution.[
