摘要
针电气石为环状结构硅酸盐矿物,具有压电性、热释电性、远红外辐射和释放负离子性等独特性能,作为新型功能矿物材料受到人们高度重视,通过物理或化学方法与其他材料复合,可制得多种功能材料,被广泛应用于环保、电子、医药、化工、轻工、建材等领域,已成为一种高附加价值的新型工业矿物。为了开发电气石的高附加价值和更广的应用领域,近年来许多科技工作者对电气石的性能、改性及应用进行了深入的探讨。本文以甲基丙烯酰氯改性剂对电气石粉体的表面改性进行了探讨,以改性产物的表面接触角及其在液体石蜡中的浊度为参数优化了甲基丙烯酰氯改性电气石的工艺条件,并对改性电气石的结构、形貌及性能进行了表征,试验结果表明,经过表面改性在电气石表面引入了甲基丙烯酰基有机链制备了可聚合的甲基丙烯酸电气石酯,电气石粉体的表面极性减小,团聚现象明显降低,分散性能得以改善,且其远红外辐射率及负离子释放量均具有明显提高。
Tourmaline is a kind of cyclosilicate mineral and attracts widespread attention as novel functional mineralfor its specific characters, such as： piezoelectricity, pyroelectricity, far infrared radiation and negative ion releasing.Multiple functional composites materials could be obtained by compositing tourmaline with other materials via physicalor chemical approaches, and applied widely in many fields, for example： environmental protection, electronic industry,medicine, chemical industry, light industry, building materials and so on. Tourmaline has become a novel functionalmineral materials with high potential werits. In order to investigate its high additive-merit and rather wide applicationfields, many scientists have researched widely the performances, modification and application of tourmaline in recent.The surface modification of tourmaline powder with methacryloyl chloride was studied, and the optimum conditionswere investigated with the parameters of contact angle and turbidity of modified tourmaline, the structure, morphologyand performances of modified tourmaline were characterized. The experimental results show that the methacryloylgroup was introduced onto the surface by means of modification to prepare a polymerizable tourmaline methacrylate,tourmaline surface polarity decreased, the phenomenon of agglomeration is obviously reduced, and dispersity wasimproved, its far infrared radiation rate and negative ion releasing amount all were clearly increased.
作者
胡应模
李云华
李梦灿
候春燕
刘权
Hu Yingmo;Li Yunhua;Li Mengcan;Hou Chunyan;Liu Quan(Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, Chia)
出处
《矿产综合利用》
CAS
北大核心
2018年第2期147-151,共5页
Multipurpose Utilization of Mineral Resources
基金
国家自然科学基金项目(51372233)
关键词
电气石
甲基丙烯酰氯
表面改性
负离子
远红外辐射率
Tourmaline
Methacryloyl Chloride
Surface Modification
Negative ion
Far-infrared Radiation
