以水作为溶剂,经初步反应后,反应混合液通过压力喷雾干燥机组可在30 min内完成干燥造粒工序,生产效率高。所得产品通过扫描电镜、HPLC、粒径分析仪、白度仪、红外光谱仪、热重分析仪等分析手段进行表征,为片状结晶,纯度≥99．6%,收率≥95%,平均粒径D50为3μm~3．5μm,白度≥93%,起始分解温度≥350℃。并且通过不同工艺条件所得产品的物性及应用对比,验证所得产品具有明显的竞争优势,并容易实现产业化。
Using water solution as solvent, and after the initial reaction, the reaction mixture was drying and granulation by the pressure spray drying equipments can be completed within 30 min . It has high production effi-ciency. SEM,HPLC,particle size analyzer,whiteness meter,IR,TGA have been used to characterize the MCA prod-ucts,they have plate crystal,purity≥99. 6%,yield≥95%,average particle diameter D50 is 3μm~3. 5μm,white-ness≥93%,Initial decomposition temperature ≥350℃. Comparising by the physical properties and application a-bout products of different process,the product has obvious competitive advantage,and it’s easy to realize industriali-zation.
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