影响α半水石膏粒度、形貌及强度的因素  

Research of Some Actors on Influencing the Granularity、Morphology and Strength of Alpha-hemihydrate Gypsum

作　　者：张巨松[1] 郑万荣[1] 陈华[2] 张添华[1] 王文军[1] 金建伟[1] 张伯勋[2] 

机构地区：[1]沈阳建筑大学材料科学与工程学院,辽宁沈阳110168 [2]解放军总医院骨科,北京100853

出　　处：《沈阳建筑大学学报（自然科学版）》2006年第6期930-934,共5页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅项目(202083064)

摘　　要：目的制备高纯度的医用α半水石膏并能进一步控制好晶体的粒度、形貌.方法采用加压水溶液法并在转晶剂作用下制备α半水石膏,在体视显微镜下分析转晶剂、蒸压时间对晶体粒度、形貌的影响及晶体粒度、形貌与强度之间的关系.结果试验结果表明,只有晶体粒度大小适当的、晶体形貌是六方短柱的、晶面完整的α半水石膏才具有较高的强度.制备了二轴平均径12.5μm、长径比2∶1、单一粒径水膏比0.223、d抗压强度达到61.1 MPa的α半水石膏.结论复合转晶剂适当的比例和掺量、蒸压时间是控制α半水石膏晶体粒度、形貌及强度的关键因素.Preparation of the high-purity medical alpha hemihydrate gypsum and further controlling of the crystal granularity, the appearance by using hydrothermal production process in pressure. The result of the test suggested that alpha hemihydrated gypsum will have high strength only when it has hexagonal stump crystal shape, proper crystal granularity and perfect crystal plane. The author using this method have produced the biaxial average diameter of 12.5 μm, the slenderness ratio of less than 2： 1, the single particle of water and gypsum ratio is 0.22 and 3-days compression strength reached 61.1 MPa of alpha hemihydrated gypsum. The important factors of controlling the crystal granularity, morphology and strength of the alpha hemihydrate gypsum are the proportion of composition medium crystal agent and quantity, autoclave time.

关 键 词：Α半水石膏 粒度 形貌 强度 

分 类 号：TB321[一般工业技术—材料科学与工程]