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压电陶瓷表面硅钙复合膜的制备与表征
引用本文:徐洪超,关芳,马凤莲,张颖,黄世峰. 压电陶瓷表面硅钙复合膜的制备与表征[J]. 复合材料学报, 2020, 37(5): 1114-1122. DOI: 10.13801/j.cnki.fhclxb.20190909.003
作者姓名:徐洪超  关芳  马凤莲  张颖  黄世峰
作者单位:1.济南大学 山东省建筑材料制备与测试技术重点实验室,济南 250022
基金项目:国家自然科学基金(51761145023; 51632003)
摘    要:采用溶胶-凝胶法制备了硅钙复合溶胶,并在压电陶瓷表面制备硅钙复合膜,以改善水泥基压电陶瓷复合材料界面。确定了溶胶配比,研究了陈化、低温热处理和硅烷偶联剂对覆硅钙复合膜压电陶瓷接触角、压电和介电性能的影响。结果表明,硅钙复合溶胶中Ca与Si摩尔比>0.2时不利于成膜;提高陈化温度和延长陈化时间可明显减小硅钙复合膜的接触角;硅钙复合膜层数最佳为3层,烧结温度不大于160℃;加入微量硅烷偶联剂可有效改善膜层开裂。制备的硅钙复合膜接触角最小为27°,亲水性好。

关 键 词:压电陶瓷  硅钙复合膜  接触角  溶胶-凝胶法  黏度
收稿时间:2019-06-06

Preparation and characterization of silicon-calcium composite film on piezoelectric ceramic surface
XU Hongchao,GUAN Fang,MA Fenglian,ZHANG Ying,HUANG Shifeng. Preparation and characterization of silicon-calcium composite film on piezoelectric ceramic surface[J]. Acta Materiae Compositae Sinica, 2020, 37(5): 1114-1122. DOI: 10.13801/j.cnki.fhclxb.20190909.003
Authors:XU Hongchao  GUAN Fang  MA Fenglian  ZHANG Ying  HUANG Shifeng
Affiliation:1.Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Ji’nan, Ji’nan 250022, China2.School of Chemistry and Chemical Engineering, University of Ji’nan, Ji’nan 250022, China
Abstract:The silica-calcium composite sol was prepared by sol-gel method, and silica-calcium composite film was prepared on the surface of piezoelectric ceramics to improve the interface of cement-based piezoelectric ceramic composites. The sol ratio was determined, and the effects of aging, low temperature heat treatment and silane coupling agent on the contact angle, piezoelectricity and dielectric properties of piezoelectric ceramics with silica-calcium composite film were investigated. The results show that the molar ratio of Ca to Si greater than 0.2 in silica-calcium composite sol is not conducive to film formation; increasing the aging temperature and prolong the aging time can significantly reduce the contact angle; the optimal number of layers of silica-calcium composite film is 3, and sintering temperature is not more than 160℃; the addition of a trace amount of a silane coupling agent can effectively improve the cracking of the film layer. The prepared silica-calcium film has a minimum contact angle of 27° and good hydrophilicity. 
Keywords:piezoelectric ceramic  silicon-calcium composite film  contact angle  sol-gel method  viscosity
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