氧化镁两步法制备阻燃型氢氧化镁

引用本文: 张玉星, 陈建铭, 宋云华. 氧化镁两步法制备阻燃型氢氧化镁[J]. 无机化学学报, 2014, 30(4): 860-866. doi: 10.11862/CJIC.2014.091 shu

Citation: ZHANG Yu-Xing, CHEN Jian-Ming, SONG Yun-Hua. Two-Step Preparation of Magnesium Hydroxide Flame Retardant from Magnesium Oxide[J]. Chinese Journal of Inorganic Chemistry, 2014, 30(4): 860-866. doi: 10.11862/CJIC.2014.091 shu

氧化镁两步法制备阻燃型氢氧化镁

通讯作者: 宋云华 songyh@mail.buct.edu.cn

基金项目:
中国海洋局课题(No.20100521) (No.20100521)

国家自然科学基金(No.20676006)资助项目。 (No.20676006)

摘要: 以氯化镁焙烧生成的氧化镁为原料,采用两步法即先水化后水热的方法制备出六方片状氢氧化镁。考察了水化时间、水热时间和温度及水热添加剂氢氧化钠浓度对氢氧化镁材料形貌的影响。研究表明,水化时间超过3h,氧化镁水化率基本不变,水热温度越高对晶体形貌改善越大,水热时间的延长可促进晶体粒径及厚度的增加,但是对晶体的宽厚比改变不大。水热添加剂氢氧化钠浓度的增加可明显地提高晶体结晶度,减小晶体微观内应变,提高粉体分散性。

关键词:

氧化镁;水热法;阻燃型氢氧化镁

English

Two-Step Preparation of Magnesium Hydroxide Flame Retardant from Magnesium Oxide

1.
Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China

Corresponding author: 宋云华 songyh@mail.buct.edu.cn

Received Date: 20 September 2013
Fund Project:
中国海洋局课题(No.20100521)

国家自然科学基金(No.20676006)资助项目。

Abstract: The flame retardant magnesium hydroxide powder was prepared by two-step method using magnesium oxide which was calcined by magnesium chloride as raw material. Two-step method consists of hydrating and hydrothermal reaction process. The effects of hydration time, hydrothermal reaction time and temperature, and the concentration of sodium hydroxide on the morphology and structure of magnesium hydroxide had been studied. Special attention was given to the obtaining of platelet-shaped, high purity and highly-dispersible powders. The characterization of magnesium hydroxide powder was investigated by X-ray diffraction (XRD), scanning electronic microscope (SEM), and nitrogen absorption BET analyzer. It is indicated that magnesium oxide has been completely hydrated after 3h. As the hydrothermal temperature and time increased, crystal size became larger and crystalline dispersion became remarkable. Additionally, increasing the hydrothermal additives concentration of sodium hydroxide can significantly improve the degree of crystallization crystals, reduce the microscopic internal strain of crystal, and enhance powder dispersibility.

Key words:

magnesium oxide;hydrothermal method;magnesium hydroxide flame retardant

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

氧化镁两步法制备阻燃型氢氧化镁

通讯作者: 宋云华 songyh@mail.buct.edu.cn

English

Two-Step Preparation of Magnesium Hydroxide Flame Retardant from Magnesium Oxide

Corresponding author: 宋云华 songyh@mail.buct.edu.cn

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

氧化镁两步法制备阻燃型氢氧化镁

通讯作者: 宋云华 songyh@mail.buct.edu.cn

English

Two-Step Preparation of Magnesium Hydroxide Flame Retardant from Magnesium Oxide

Corresponding author: 宋云华 songyh@mail.buct.edu.cn

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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