KH-171对电气石的表面改性及其结构表征
Surface Modification and Structural Characterization of Tourmaline Powder by KH-171
崔奎 1胡应模 1庞宝宝 1武莎莎 1张震 1郭素芳1
作者信息
- 1. 中国地质大学(北京)材料科学与工程学院,非金属矿物和固废资源材料化利用北京市重点实验室,岩石矿物材料国家专业实验室,北京 100083
- 折叠
摘要
这是一篇矿物材料领域的论文.以硅烷偶联剂KH-171为改性剂对电气石粉体进行改性,依据改性电气石的接触角和在液体石蜡中的浊度为参数,对改性电气石的工艺条件进行了优化.实验结果表明,在体系pH值为9,改性剂KH-171用量为2mL,醇水比为1:5的条件下60℃反应2 h时,所得改性电气石的接触角达到133°,显示了优良的疏水性能.利用IR、SEM和XRD分析对改性电气石的结构与形貌进行了表征,结果表明,电气石表面成功引入带有碳碳双键的有机官能团,没有影响电气石原有晶体结构,但有效降低了电气石的团聚现象,展示了更好的分散性能.
Abstract
This is an article in the field of mineral materials.The tourmaline powder was modified with silane coupling agent KH-171,and the process conditions were optimized with the parameters of contact angle and turbidity of the modified product in liquid paraffin.The test results showed that the contact angle of the resulting modified tourmaline reached 133 ℃ when reacted at 60 ℃ for 2 h at a system pH value of 9,a dosage of modifier KH-171 of 2 mL,and an alcohol-to-water ratio of 1:5,showing excellent hydrophobic properties.The modified tourmaline was characterized by IR,SEM and XRD.The results showed that the organic functional groups with carbon-carbon double bonds were successfully connected to the surface of tourmaline without changing the original crystal structure,but the agglomeration of tourmaline reduced effectively and showed better dispersion performance.
关键词
矿物材料/电气石/KH-171/表面改性/硅烷偶联剂/疏水性Key words
Mineral materials/Tourmaline/KH-171/Surface modification/Silane coupling agent/Hydrophobicity引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据