[1]彭龙贵,杨 莎,石程程,等.半水型硫酸钙晶须的不饱和低温制备及生长机理分析[J].西安建筑科技大学学报:自然科学版,2014,46(03):437-440.[doi:10.15986/j.1006-7930.2014.03.024]
　PENG Longgui,YANG Sha,SHI Chengcheng,et al.Preparation and characterization of water resistant hemihydrates calcium sulfate whisker[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(03):437-440.[doi:10.15986/j.1006-7930.2014.03.024]
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半水型硫酸钙晶须的不饱和低温制备及生长机理分析()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年03期
页码:
437-440
栏目:
出版日期:
2014-06-30

文章信息/Info

Title:
Preparation and characterization of water resistant hemihydrates calcium sulfate whisker
文章编号:
1006-7930(2014)03-0437-04
作者:
彭龙贵1; 杨 莎2; 石程程1; 张再勇3; 韩 瑾1
(1. 西安科技大学材料科学与工程学院,陕西西安 710054;2. 西北工业大学理学院应用化学系,陕西西安 710072; 3. 陕西省建筑材料工业设计研究院,陕西西安 710032)
Author(s):
PENG Longgui1;  YANG Sha2;  SHI Chengcheng1;  ZHANG Zaiyong3;  Han Jin1
(1. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; 2. Department of Applied Chemistry, Northwestern Polytechnical University, Xi’an 710072, China; 3. Shaanxi Design & Research Institute of Building Materials Industry, Xi’an 710032, China)
关键词:
水热法; 半水硫酸钙; 晶须; 结构
Keywords:
synthesis;  calcium sulfate;  whisker;  supersaturation
分类号:
TQ343
DOI:
10.15986/j.1006-7930.2014.03.024
文献标志码:
A
摘要:
以CaSO4·2H2O 为原料,采用水热法合成了半水硫酸钙晶须,采用生物显微镜、XRD 对硫酸钙晶须的结构、形貌及生长机理进行了测试分析.结果表明:半水硫酸钙晶须的最佳反应条件为温度80 ℃、时间30 min、Ca/A=9;制备的半水硫酸钙晶须平均直径3 μm,长径比为80;XRD 显示半水硫酸钙晶须d(020)特征峰明显;根据阿伦尼乌斯和热力学公式,料浆浓度、合成温度、合成时间影响了半水型硫酸钙晶须的成核速率,晶须成核速率随硫酸钙溶液过饱和度的增加呈现先增大后减小的趋势.
Abstract:
Hydrothermal synthesis was applied to the preparation of hemihydrate calcium sulfate whiskers in airtight reactor with gypsum as primary material. The optimum conditions for the preparation were that the reaction temperature is 90 ℃ and reaction time is 30 min with mass fraction 0.7% and Ca/A is 9. As a result of biological microscope is usedto analyze the diameter of hemihydrate CaSO4 whiskers. Then, the hemihydrate CaSO4 whiskers with average diameter 3 μm and the aspect ratio 80 were obtained. According to Arrhenius and thermodynamic formulas, slurry concentration, synthesis temperature, the synthesis time influence the nucleation rate of half water calcium sulfate whisker, and the whisker nucleation rate increased as the calcium sulfate supersaturation first increased and then decreased.

参考文献/References:

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WANG Xiaoli, HAN Yuexin, WANG Zehong, et al. Research progress of calcium sulfate whisker[J]. Non-Ferrous Mining and Metallurgy, 2005(21): 77-80.

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[8] HARTMAN P, CHAN H K. Application of the periodic bond chain(PBC)theory and attachment energy consideration to derive the crystal morphology of hexamethylmelamine[J]. Pharmaceutical Research, 1993, 10(7): 1052-1058.

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备注/Memo

备注/Memo:
收稿日期:2013-10-14 修改稿日期:2014-06-10
基金项目:陕西省科技统筹创新工程计划项目(2012KTJD02-02);陕西省科学技术厅工业攻关项目(214k10-22);西安科技大学教改项目(JG2009)
作者简介:彭龙贵(1975-),男,博士研究生,讲师,从事功能材料的研究与教学工作.E-mail: penglonggui@163.com
更新日期/Last Update: 2015-09-01