北京航空航天大学学报 ›› 2006, Vol. 32 ›› Issue (06): 662-666.

• 论文 • 上一篇    下一篇

氨合成-水热改性法制备氢氧化镁阻燃剂

李志强   

  1. 北京航空航天大学 航空发动机气动热力重点实验室, 北京 100083
  • 收稿日期:2005-06-08 出版日期:2006-06-30 发布日期:2010-09-20
  • 作者简介:李志强(1970-),男,山西长治人,副教授, lizhiqiang@buaa.edu.cn.

Preparation of magnesium hydroxide flame retardant via MgCl2-NH3·H2O synthesis and hydrothermal modification treatment methods

Li Zhiqiang   

  1. National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2005-06-08 Online:2006-06-30 Published:2010-09-20

摘要: 为了解决氢氧化镁和聚合物之间的不相容问题, 对氨合成法-水热改性处理2步法制备高分散氢氧化镁阻燃剂进行了研究,分析了常温合成温度、水热改性温度和水热改性时间对制备大晶型、低比表面积氢氧化镁阻燃剂的影响.结果表明,经过水热改性处理改变了氢氧化镁晶体的生长习性,生成了形貌规则、粒径分布均匀、分散性良好的氢氧化镁六方片状颗粒.另外通过提高氯化镁浓度和氨水过量1倍,探讨了常温合成反应的转化率,认为应该在反应原料等当量下寻求提高转化率的可行方法.

Abstract: In order to solve the problem that the Mg(OH)2 is incompatible with the polymer, the two steps reaction of high dispersive Mg(OH)2 preparation, synthetic reaction and hydrothermal modification treatment, was studied. The effect of the synthetic reaction temperature, hydrothermal modification temperature and time was investigated for preparation of Mg(OH)2 flame retardant with large crystalline structure and small specific surface area. The experimental results indicate that the growth direction of Mg(OH)2 crystal is changed and the regular hexagonal plates of Mg(OH)2 with uniform particle size and high dispersion characteristic are formed after the hydrothermal modification treatment. With the increasing MgCl2 concentration and/or feeding excessive NH3·H2O, percent conversion rates of raw materials are discussed. The results show some new technologies should be studied for increasing percent conversion of raw materials when synthetic reaction is equivalent.

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发