The Preparation and Characterization of Calcium Carbonate Whiskers

Journal of Liaoning Petrochemical University ›› 2007, Vol. 27 ›› Issue (4): 13-16.

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The Preparation and Characterization of Calcium Carbonate Whiskers

1 .Department o f Material S cience and Engineering , Beijing I nstitute o f Petrochemica l Technolog y ,Beij ing 102617, P .R .China ;
2.College o f Material Science and Engineering , Beij ing University of Chemical Technology , Beij ing 100029, P .R .China

Received:2007-01-12 Published:2007-12-20 Online:2017-07-05

碳酸钙晶须的制备及表征

杨明山^{1 , 2}, 何　杰² , 何成汉¹

1.北京石油化工学院材料科学与工程系, 北京102617;
2.北京化工大学材料科学与工程学院, 北京100029

作者简介:杨明山(1963 -) 男北京市教授博士

Abstract

Abstract:

　 The preparation methods of calcium carbonate whiskers we restudied.The factors influencing the growth of calcium carbonate whiskers had been investigated when using magnesium dichlo ride as a crystalline controller .According to or thogonal test, the optimum parameters were obtained , i.e ., the concentration of MgCl₂ is 0 .5mol/ L , the temperature is 90 ℃, the speed of stirring is 250 r/ min and the flux of CO₂ is 1mL/min.The whiskers were characterized by powder X-ray diffraction (XRD) and polarizing micro scope .The characterization results show that the mass fraction of calcium carbonate whiskers prepared is over 97%, with its aspect ratio range between 20 and 30 .

Key words: Calcium carbonate, , Whiskers, , Preparation, , Characterization

摘要： 　研究了碳酸钙晶须的制备方法, 探索了以MgCl₂ 为促进剂时碳酸钙晶须生长的影响因素, 通过正交实验找到了制备碳酸钙晶须的最佳条件, 即MgCl₂ 浓度为0 .50 mol/ L , 温度90 ℃, 搅拌速度为250 r/ min , CO2 流量为1 m L/ min ;采用偏光显微镜、X 射线衍射仪对碳酸钙晶须结构进行了表征, 所制备的产物中晶须质量分数在97 %以上, 长径比为20～ 30。

关键词: 碳酸钙, , 晶须, , 制备, , 表征

YANG Ming -shan,HE Jie,HE Cheng -han. The Preparation and Characterization of Calcium Carbonate Whiskers[J]. Journal of Liaoning Petrochemical University, 2007, 27(4): 13-16.

杨明山,何　杰, 何成汉. 碳酸钙晶须的制备及表征[J]. 辽宁石油化工大学学报, 2007, 27(4): 13-16.

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The Preparation and Characterization of Calcium Carbonate Whiskers

碳酸钙晶须的制备及表征

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