第36 5期2020 5 月无 机 化 学 学 报
1111sCHINESE JOURNAL OF INORGANIC CHEMISTRY Vol .36 No .5908-920
高传慧.董亚洁.任 秀.陈 颖.王汇淄.胡尊富2王 静.刘月涛* 」
(#青岛科技大学化工学院生态化学工程国家重D 实验室基地，青岛266042) (2临沂大学材料科学与工程学院，临沂276000)
收稿日期：2019-07-26o 收修改稿日期：2020-03-05o
启动子
国家自然科学基金(No.51872150)，山东省自然科学基金(No.ZR2018M034)，山东省生态化工协同创新中心人才基金(No.XTCXQNll)和 生态化工国家重点实验室开放课题(No.STHG1804)资助项目。
* 通P 联系人 ° E -mail : ****************** 摘要：通过探讨半水硫酸钙晶须(HCSW )贮存过程在空气中形貌和晶形的变化，研究了半水硫酸钙晶须的水化机理，分析了不 同处理方法对其稳定性的调节°研究发现,HCSW 的水化是由晶须表面的-0H 基团和Ca"活性位点以及HCSW 存在的内部通道 引起的，锻烧
和二元醇改性均可提高硫酸钙晶须的耐水性。结果表明，锻烧后，半水硫酸钙晶须转化为无水可溶硫酸钙晶须和 无水 硫酸钙晶须，易于水化的内部通道消失，耐水性 ；水 过程 的加入，可利于醇軽基吸附在HCSW 的(200)'(020)和(220)表面，阻止比0分子中軽基在晶须表面的 ，进而提高晶须的耐水性， (TEG)且浓度为18.8 mmo (LT 时，HSCW 在空气中耐水稳定性不小于7 d 。
商品电子防盗系统关键词：半水硫酸钙晶须；水化；锻烧；三乙二醇
中图分类号：0784 文献标识码：A 文章编号：1001-4861(2020)05-0908-13
DOI ： 10.11862/CJIC.2020.099
纳米二氧化钛涂料
霍尔式角度传感器Hydration Mechanism and Stability Regulation of
Hemihydrate Calcium Sulfate Whiskers
GAO Chuan -Hui 1 DONG Ya -Jie 1 REN Xiu 1 CHEN Ying 1
WANG Hui -Zi 1 HU Zun -Fu 2 WANG Jing 1 LIU Yue -Tao *」
褐变度
(State Key Laboratory Base for Eco -Chemical Engineering in College of Chemical Engineering,
Qingdao University of Science and Technology, Qingdao, Shandong 266042, China )
f 2C ollege of Materials Science and Engineering, Linyi University, Linyi, Shandon
g 276000, China}
Abstract ： Hydration mechanism of hemihydrate calcium sulfate whisker (HCSW) was studied by discussing the change of morphology and crystal form in the storage process in the air, and the regulation of stability by different treatment methods was analyzed. It is found that the hydration of HCSW was caused by -OH group, Ca 2+ active site at the surface and the internal channel inside of the whisker. Calcination and diol modification could improve the water resistance of calcium sulfate whisker. The experimental results indicate that after calcination, the hemihydrate calcium sulfate whisker are transformed into anhydrous soluble calcium sulfate whiskers and anhydrous dead calcium sulfate whiskers, the internal channels easy to hydration disappear, and the water resistance is enhanced. In the hydrothermal synthesis process, the addition of binary alcohol was beneficial to the adsorption of alcohol hydroxyl on the (200), (020) and (220) surfaces of HCSW, preventing the adsorption of hydroxyl in H 2O molecules on the whisker surface, and further improving the water resistanc
e of the whisker. When the additive was triethylene glycol (TEG) and the concentration was 18.8 mmol (L R1, the water resistance stability of HSCW in the air was not less than 7 days.
Keywords ： hemihydrate calcium sulfate whisker; hydration; calcination; triethylene glycol
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