牙科氧化铝基陶瓷纳米硅涂层表面改性的研究

华西口腔医学杂志

牙科氧化铝基陶瓷纳米硅涂层表面改性的研究

谢海峰1，章非敏1 ，汪效祖2 ，夏阳1

1．南京医科大学口腔医院修复科，江苏南京210029；2．南京工业大学化学化工学院，江苏南京210034

收稿日期:2006-12-25 修回日期:2006-12-25 出版日期:2006-12-20 发布日期:2006-12-20
通讯作者: 章非敏，Tel: 025-85031831
作者简介:谢海峰1980-)，男，河北人，硕上研究生
基金资助:
中国博士后科学基金资助项E|= 2003034057)；江苏省白然科学基金资助项目（K2006174)；江苏省高校白然科学基金资助项目| 3KJB320081)

Surface Modification of Dental Alumina Ceramic with Silica Coating

XIE Hai-feng1，ZHANG Fei-min1，WANG Xiao-zu2，XIA Yang1

1. Dept. of Pro.sthetic, 210029. China: 2. College of Chemistry and Chemical China

Received:2006-12-25 Revised:2006-12-25 Online:2006-12-20 Published:2006-12-20
Contact: ZHANG Fei-min，Tel: 025-85031831

摘要/Abstract

摘要：

目的探讨溶胶凝胶法制备纳米硅涂层的工艺,评价涂层对牙科氧化铝基陶瓷润湿性的改变,为提高其与树脂的粘接提供实验基础。方法采用溶胶凝胶法在喷砂的In-Ceram氧化铝基片表面制备硅涂层;原子力显微镜(AFM)观察热处理后涂层凝胶的微观形态;红外光谱(IR)分析热处理前后的凝胶;计算瓷片抛光组、喷砂组、喷砂加纳米硅涂层组油酸接触角的改变。结果在In-Ceram氧化铝基片表面置得纳米硅涂层,AFM观测显示热处理使纳米氧化硅粒子的直径长大;IR分析可知凝胶经热处理后Si-OH弯曲振动吸收峰消失;喷砂和喷砂加纳米硅涂层组油酸的接触角均小于抛光组(P=0.000,P=0.000),喷砂加纳米硅硅涂层组的接触角最小(P=0.000,P=0.003)。结论溶胶凝胶法可以在牙科氧化铝基陶瓷表面制备纳米硅涂层;热处理加强了涂层凝胶微结构中的Si-O-Si网络,但会使纳米粒子部分团聚;喷砂能够提高氧化铝基陶瓷的润湿性,纳米硅涂层使润湿性进一步增强。

关键词: 溶胶凝胶法, 纳米硅涂层, 氧化铝陶瓷

Abstract: Objective To make silica coating through sol-gel process, and to evaluate the wettability of dental alumina ceramic with or without coating. Methods Silica coating was prepared with colloidal silica sol on In- Ceram alumina ceramic surface which had been treated with air particle ahrasion. Coating gel af'ter heat treatment was ohserved with atomic f'orce microscopd AFM). and was analyzed by infrared spectrun( IR) with gel without sintered as control. Contact angles of' oleic acid to be f'inished, sandblasted and coated ceramic surf'ace of' were measured. Results AFM pictures showed that some parts of' nano-particles in coating gel conglomerated af'ter heat treatment. It can be seen f'rom the IR picture that bending vibration ahsorption kurtosis of' Si-OH also vanished af:ter heat treatment. Among contact angles of' three treated surface. the ones on polished surface were the biggest(P=0.000, P=O.OOO), and sandblasting+silica coating surface the smallest(P=O.OOO, P=0.003). Conclusion Silica coat-ing can be made with sol-gel process successf'ully. Heat treatment may reinforce Si-O-Si net structure of' coating gel. Wettability of' dental alumina c:eramic with silica coating is higher than with sandhlasting and polishing.

Key words: sol-gel, nano-silicacoating, aluminaceramic

谢海峰;章非敏;汪效祖;夏阳. 牙科氧化铝基陶瓷纳米硅涂层表面改性的研究[J]. 华西口腔医学杂志.

XIE Hai-feng1，ZHANG Fei-min1，WANG Xiao-zu2，XIA Yang1. Surface Modification of Dental Alumina Ceramic with Silica Coating[J]. West China Journal of Stomatology.

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