C-CNF表面改性电气石及其分散稳定性  

C-CNF Surface Modified Tourmaline and its Dispersion Stability

作　　者：庞宝宝 胡应模[1] 张震[1] 崔奎 武莎莎 郭素芳 PANG Baobao;HU Yingmo;ZHANG Zhen;CUI Kui;WU Shasha;GUO Sufang(School of Materials Science and Technology,China University of Geosciences,Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes,National Laboratory of Mineral Materials,Beijing 100083,China)

机构地区：[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

出　　处：《矿产综合利用》2024年第2期100-104,117,共6页Multipurpose Utilization of Mineral Resources

摘　　要：这是一篇矿物加工工程领域的论文。电气石具有自发极化效应、热释电性、远红外辐射和负离子释放等效应被广泛应用。为了增加其在水性涂料中的分散稳定性,改善其在水性涂料中的使用性能,本实验采用羧基化纳米纤维素(C-CNF)对电气石进行表面接枝改性,并对实验条件进行了优化。实验结果表明,当C-CNF的添加量为2 g、反应温度为50℃、反应时间为2 h、固液比为1∶5时,改性电气石的性能达到较佳值,其浊度达到1361 ntu,接触角达到了53°。通过对改性电气石的结构进行表征,发现C-CNF成功接枝到了电气石表面,改性电气石在水性介质中的分散性得到较大的提升。This is an article in the field of mineral processing engineering.Tourmaline has been widely used for its spontaneous polarity,pyroelectric effect,far-infrared radiation and negative-ion release effect.In order to increase its stability in water-based coatings and improve its performance in water-based coatings,in this work,the surface modification of tourmaline with carboxylated nanolocellulose(C-CNF)was studied and optimized.The test results show that the performance of modified tourmaline was optimal while the addition of C-CNF was 2 g,solid-to-liquid ratio 1:5,and reacted 2h at 50℃,its turbidity reached 1361 ntu,contact angle to 53°.It was found that C-CNF was successfully grafted to the tourmaline surface by means of characterization of the modified tourmaline,and the dispersion of the modified tourmaline in the aqueous medium was better improved.

关 键 词：矿物加工工程 电气石 表面改性 羧基化纳米纤维素 分散稳定性 

分 类 号：TD985[矿业工程—选矿]