磷酸钠对半水硫酸钙晶须的稳定作用  

Stabilizing effect of sodium phosphate on hemihydrate calcium sulfate whiskers

作　　者：刘红叶[1] 刘富玲[2] 王宇斌[2] 袁致涛[3] 

机构地区：[1]中国民航飞行学院空管学院,四川广汉618307 [2]河南城建学院土木与材料工程系,河南平顶山467044 [3]东北大学资源与土木工程学院,辽宁沈阳110004

出　　处：《化工矿物与加工》2011年第4期11-13,共3页Industrial Minerals & Processing

基　　金：国家自然科学基金项目(No.50502011);河南省教育厅自然科学基金项目(No.2011A430003)

摘　　要：介绍了磷酸钠对半水硫酸钙晶须在水溶液中的形貌和晶型的稳定性影响。考查了反应时间及磷酸钠用量等因素对稳定化效果的影响,并采用SEM、DSC-TG、XRD等方法对磷酸钠稳定化处理后半水硫酸钙晶须产品的表面形貌、热稳定性及物相组成进行了表征。结果表明:在0.10%用量、作用时间20 min、稳定化温度100℃的稳定化作用条件下,磷酸钠可使半水硫酸钙晶须的形貌2 h不变,同时磷酸对半水硫酸钙晶须的晶型也有一定的稳定作用。Stabilization effect of sodium phosphate on crystalline phase and crystal shape of hemihydrate calcium sulfate whiskers in aqueous solution was introduced.Effects of reaction factors such as amount of sodium phosphate and reaction time were investigated.Morphology,thermal stability and phase composition of stabilized hemihydrate calcium sulfate whiskers were characterized by means of SEM,DSC-TG and XRD.Results indicated that crystal shape of hemihydrate calcium sulfate whiskers could be invariableness in two hours at 100 ℃ with addition of 0.10% sodium phosphate for 20 min and that sodium phosphate could play a part role in crystalline phase stabilization of hemihydrate calcium sulfate whiskers.

关 键 词：磷酸钠 半水硫酸钙晶须 稳定 效果 

分 类 号：TB32[一般工业技术—材料科学与工程]