有机白云母的制备与表征
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摘要
为了制得插层型或剥离型的聚合物/层状硅酸盐纳米复合材料,对微晶白云母分别进行热活化处理、酸浸处理和硝酸锂处理,再利用溶液搅拌法,将十六烷基三甲基溴化铵作为插层剂,对其进行有机化改性,并对改性后的微晶白云母进行X射线衍射、热重分析及红外光谱分析.实验结果表明:将十六烷基三甲基溴化铵成功插入到微晶白云母中,使微晶白云母的层间距从原始的1. 02 nm最大扩大到2. 99 nm.
In order to obtain intercalated or exfoliated polymer/layered silicate nanocomposites in the later stage,heat activation treatment,acid leaching treatment,lithium nitrate treatment of the microcrystal muscovite are all carried out,and then the solution stirring method is applied. Cetyltrimethyl ammonium bromide is used as an intercalation agent to modify the microcrystalline muscovite,and its infrared spectrum analysis,thermogravimetric analysis and X-ray diffraction are all done on the modified micro-crystal muscovite. The experimental results show that the intercalation agent has been successfully inserted into the micro-crystal muscovite,and the interlayer spacing of the micro-crystal muscovite is expanded from 1. 02 nm to 2. 99 nm.
In order to obtain intercalated or exfoliated polymer/layered silicate nanocomposites in the later stage,heat activation treatment,acid leaching treatment,lithium nitrate treatment of the microcrystal muscovite are all carried out,and then the solution stirring method is applied. Cetyltrimethyl ammonium bromide is used as an intercalation agent to modify the microcrystalline muscovite,and its infrared spectrum analysis,thermogravimetric analysis and X-ray diffraction are all done on the modified micro-crystal muscovite. The experimental results show that the intercalation agent has been successfully inserted into the micro-crystal muscovite,and the interlayer spacing of the micro-crystal muscovite is expanded from 1. 02 nm to 2. 99 nm.
引文
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[3]张起,李笃信,赖登旺,等.聚酰亚胺/绢云母复合材料的制备及表征[J].高分子学报,2014,58(3):369-377.
[4]李自强.白云母类矿物及其表面改性产物的电阻率特征及机理研究[D].成都:成都理工大学,2011.
[5]何东升,李巧双,王贤晨,等.硫酸与氢氟酸混合溶液中白云母溶解行为[J].有色金属(冶炼部分),2016,68(12):37-39,43.
[6]邓苗,汪灵,林金辉.川西微晶白云母的X射线粉晶衍射分析[J].矿物学报,2006,26(2):131-136.
[7]杨文鸽,王艳芬,刘云菡,等.川西微晶白云母制备多孔材料试验研究[J].矿物学报,2016,36(1):22-27.