微波加热制备低水硼酸锌(ZB2335)的研究  

The Synthesis of Zinc Borates(ZB2335) Powders by Microwave Heating

作　　者：陈建铭[1] 宋云华[1] 付纪文[1] 任鹏飞[1] 陈建峰[1] 

机构地区：[1]北京化工大学教育部超重力工程研究中心,北京100029

出　　处：《材料科学与工艺》2004年第5期529-531,共3页Materials Science and Technology

摘　　要：为了缩短普通工艺条件下制备硼酸锌的反应时间,本文引入了一种微波辐射加热的新方法.通过与电加热方法的比较实验表明,微波加热20分钟就可得粒度1-6μm分散性好单一相的2ZnO·3B2O3·3.5H2O(2335型)低水硼酸锌粉体,而在电加热和引入晶种条件下,反应8小时以上才得到低水硼酸锌.微波加热存在独特的非热效应,降低了反应的活化能,可极大地提高化学反应速度.采用XRD、SEM、TG-DTA对实验样品进行分析表征.The synthesis of zinc borate was investigated in microwave heating in comparison with electrical heating. From some experiments, the well - dispersed particles (diameter of 1 - 6μm) of single phase of 2ZnO·3B2O3·3. 5H2O(Crystal phase 2335)was produced with microwave heating of 20 minutes. The zinc borate(ZB2335) can be obtained in conditions of electrical heating and crystal seeds in excess of 8 hours' reaction. Microwave heating has special non - heat effect so that it can lower activation energy of reaction, so chemical reaction can be accelerated greatly. The zinc borate samples were analyzed with XRD, SEM, TG - DTA.

关 键 词：硼酸锌 制备 微波加热 晶种 B2O3 反应时间 电加热 非热效应 研究 新方法 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ314.248[化学工程—高聚物工业]