秦吉;何星;常鹰;

• 1:湖北工业大学材料与化学工程学院

摘要(Abstract)：

以乳酸石膏为原料，采用加压水溶液法制备α-半水石膏(α-HH)，用X射线衍射(XRD)、场发射扫描电子显微镜(FESEM)和激光粒度仪对制备的样品进行了表征，通过抗折强度测试仪测试α-半水石膏样品的2 h抗折强度。研究了有机酸含量对α-半水石膏晶体形貌和结晶性的影响，以及丙三醇含量对α-半水石膏晶体分散性与结晶性的影响。结果显示，添加0.11 wt.%有机酸制备得到的α-半水石膏，其晶体平均粒径为29.36μm，长径比接近1，结晶性较高，2 h抗折强度为5.68MPa；在添加0.11 wt.%有机酸基础上通过掺入1.40 g丙三醇改善了晶体的分散性，促进晶体发育更加完整，结晶性进一步提升，得到了2 h抗折强度为6.47 MPa的α-半水石膏。

关键词(KeyWords)： α-半水石膏;分散性;结晶性;抗折强度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51802087,51004046);; 湖北省自然科学基金(2019CFB524,2010CDB05806);; 大学生创新创业项目(201910500002)

作者(Authors): 秦吉;何星;常鹰;

DOI: 10.13957/j.cnki.tcxb.2021.06.008

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