半水硫酸钙晶须制备稳定一体化

使用优选稳定剂对半水硫酸钙晶须进行制备稳定一体化处理,研究了稳定剂用量对半水硫酸钙晶须形貌及稳定性的影响.通过SEM和XRD等检测手段对晶须产品进行了表征,结果表明:在制备过程中加入稳定剂油酸钠,当用量为0.025%时,半水硫酸钙晶须可保持形状稳定,但制备后静置72h后,晶型已全部转化为二水硫酸钙;采用分段加药的方式,即制备时加入0.025%硬脂酸钠,制备后加入0.15%油酸钠,半水硫酸钙晶须形貌与晶型可保持不变,实现了半水硫酸钙晶须的制备稳定一体化.

Preparation Integrated with Stabilization for Hemihydrate Calcium Sulfate Whiskers

The preparation process of hemihydrate calcium sulfate whiskers with optimized stabilizer was integrated with stabilization to investigate the effects of additive quantity of stabilizer on the morphology and stability of the crystal whiskers. Characterized by SEM and XRD, the results showed that the morphology of the whiskers can be stabilized by adding 0.025% sodium oleate in preparation process and, after 72 hr, their chemical composition turns statically into dihydrate calcium sulfate. However, the preparation integrated with stabilization for hemihydrate calcium sulfate whiskers, i.e., both the morphology and chemical composition are stabilized can be implemented by the way 0.025% sodium stearate is added in preparation with 0.15% sodium oleate added after preparation.