【摘要】 以硫酸镁和氢氧化镁为原料,利用水热法制备了碱式硫酸镁晶须,对其制备工艺和表征方法进行了研究。通过实验得到合成晶须产品的适宜水热条件:硫酸镁料浆浓度为1.28 mol/L、硫酸镁和氢氧化镁的物质的量比为1～4、搅拌强度为450 r/min、反应温度为200℃、反应时间为6 h。在此条件下合成的碱式硫酸镁晶须的化学式为:MgSO4·5Mg(OH)2·2H2O,平均长度为20～45μm,长径比在31以上,该产品表面光滑,纤细均匀且无弯曲,纯度较高。更多还原

【Abstract】 Basic magnesium sulfate whiskers were synthesized by hydrothermal method with MgSO4 and Mg(OH)2 as raw materials.Preparation process and characterization method were also studied.Experimental results indicated optimum technological conditions for preparing basic magnesium sulfate whiskers were as follows:concentration of MgSO4 was 1.28 mol/L,amount-of-substance ratio of MgSO4 to Mg(OH)2 was 1～4,the stir intensity is 450 r/min,reaction temperature was 200 ℃,and reaction time was 6 h.Results showed that high purity MgSO4·5Mg(OH)2·2H2O whiskers with smooth surface were obtained under those conditions.Furthermore,the product was delicate,uniform and without bending with about 20～45 μm in length and more than 31 in slenderness ratio.更多还原