摘要
以徐闻苦卤为原料,先在体系中加入碳酸钠-碳酸氢钠缓冲溶液,再以氢氧化钠为沉淀剂,采用液相沉淀法制备了阻燃型氢氧化镁。通过扫描电镜(SEM)及X射线衍射(XRD)等测试手段表征了产品的形貌及物相。实验结果表明,在氢氧化钠浓度为0.4 mol/L、反应温度为75℃、晶化时间为24 h条件下,可以获得纯度高、结晶度高的氢氧化镁,且氢氧化镁晶体粒度分布均匀、分散性好。该工艺简单易行、对环境无破坏,具有较高的潜在经济效益。
The flame-retardant magnesium hydroxide was synthesized by liquid precipitation reaction method with Xuwen brine as raw material.This process was as follows：A buffer solution of Na2CO3-Na HCO3 was added into the reaction system firstly,and then Na OH was added as the precipitant.The phase and crystal morphology of magnesium hydroxide samples were characterized by X-ray diffraction（XRD） and scanning electron microscop（SEM）.The magnesium hydroxides with a welldefined shape as well as smooth surface could be obtained under the following conditions：concentration of Na OH was 0.4 mol/L,reaction temperature was 75 ℃,and crystallization time was 24 h.The SEM revealed that the magnesium hydroxide form with fine dispersive capability and uniform distribution.The process was not only simple,but also production cost less and environment preserved.Therefore,it had higher potential economic benefits.
出处
《无机盐工业》
CAS
北大核心
2016年第3期56-58,共3页
Inorganic Chemicals Industry
基金
国家自然科学基金项目(51272207)
广东省科技计划(2013B021100019)资助课题
关键词
氢氧化镁
苦卤
阻燃剂
缓冲溶液
magnesium hydroxide
brine
flame-retardant
buffer solution
