The invention provides a preparation method of a 311 basic Magnesium Sulfate whisker, which includes the following steps: S1, mixing magnesium hydroxide with water soluble sulphuric acid root in the mixture of 0.1:1 to 10:1 according to the ratio of the amount of material and dissolving in water, and obtaining the reaction suspension; S2, reaction suspension at 90 to 300 C and reaction 4H to 100h, reaction The 311 solid Magnesium Sulfate whiskers were obtained by solid-liquid separation. The invention directly uses the by-product of magnesium hydroxide and water soluble sulphuric acid source as raw material, without any additives, the 311 basic Magnesium Sulfate whisker can be obtained. The process is simple and easy to operate, the cost of raw materials is low, the energy consumption is low, the product has high purity, good dispersibility, the diameter is 0.1 M to 1 u m, and the length diameter ratio is 100~700 The yield is not less than 90%, and the 311 basic Magnesium Sulfate whiskers can be added to the polymer matrix composites with good enhancement and flame retardancy.
【技术实现步骤摘要】
311型碱式硫酸镁晶须的制备方法
本专利技术属于无机功能材料制备
,具体来讲,涉及一种311型碱式硫酸镁晶须的制备方法。
技术介绍
碱式硫酸镁晶须(MOS)亦称水合碱式硫酸镁晶须,其因具有高强度、低密度和高弹性模量的特点而可以作为塑料、橡胶和树脂等复合材料的补强增韧剂,从而提高基底材料的抗弯曲强度和抗冲击力;MOS的光学折射率为1.53,与各种树脂的折射率最为接近,因而对复合材料的色调调整影响很小,对抛光着色几乎没有妨碍;并且,其良好的电绝缘性能还能使其在电缆领域得到应用。碱式硫酸镁晶须有多种存在形式,其中见诸报道的以晶须形态制备出来的有主要有MgSO4·Mg(OH)2·H2O(111型MOS)、MgSO4·3Mg(OH)2·8H2O(138型MOS)、MgSO4·5Mg(OH)2·3H2O(153型MOS)、MgSO4·5Mg(OH)2·2H2O(152型MOS)、MgSO4·6Mg(OH)2·5H2O(165型MOS)、MgSO4·Mg(OH)2·5H2O(115型MOS)、2MgSO4·3Mg(OH)2·5H2O(235型MOS)、4MgSO4·3Mg ...
【技术保护点】
一种311型碱式硫酸镁晶须的制备方法,其特征在于,包括步骤:S1、将氢氧化镁与水溶性硫酸根源按照物质的量之比为0.1:1~10:1混合并溶于水中,获得反应悬浮液;S2、将所述反应悬浮液在90℃~300℃下水热反应4h~100h,反应产物经固液分离,所得固相经洗涤、干燥获得311型碱式硫酸镁晶须。
【技术特征摘要】
1.一种311型碱式硫酸镁晶须的制备方法,其特征在于,包括步骤:S1、将氢氧化镁与水溶性硫酸根源按照物质的量之比为0.1:1~10:1混合并溶于水中,获得反应悬浮液;S2、将所述反应悬浮液在90℃~300℃下水热反应4h~100h,反应产物经固液分离,所得固相经洗涤、干燥获得311型碱式硫酸镁晶须。2.根据权利要求1所述的制备方法,其特征在于,在所述步骤S1中,水的质量为所述氢氧化镁的质量的1~500倍。3.根据权利...
【专利技术属性】
技术研发人员:樊发英,邓小川,唐志雷,卿彬菊,温现明,朱朝梁,史一飞,邵斐,
申请(专利权)人:中国科学院青海盐湖研究所,
类型:发明
国别省市:青海,63
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