不同分子量聚乙二醇对碳化硅喷雾造粒的影响  

Study on SiC spray granulation processing with different molecular weight PEG

作　　者：陈宇红[1] 孙文周[1] 韩非[1] 耿桂宏[1] 

机构地区：[1]北方民族大学材料科学与工程学院,银川750021

出　　处：《山东陶瓷》2010年第5期15-17,共3页Shandong Ceramics

基　　金：宁夏自然科学基金项目NZ0843;北方民族大学科研项目2008Y026

摘　　要：研究了不同分子量聚乙二醇(PEG)对浆料粘度及喷雾造粒粉体的失重、形貌、流动性的影响。结果显示:不同分子量的PEG对SiC均有一定的分散效果,但大分子的PEG由于分子量的缠绕作用使空间位阻效应降低。造粒粉的失重开始的温度随PEG分子量的增大而升高,但最大失重温度区间基本一致。不同分子量PEG对喷雾造粒和粉体流动影响不大,但成形效果不如使用聚乙烯醇。The effect of different molecular weight polyethylene glycol（PEG） on silicon carbide （SIC） spray granulation processing had been studied in this paper.. The effect on slurry viscosity, weight loss, grain shape and fluency were researched. The results showed that although all PEG dispered SiC slurry, high molecular weight PEG lower the steric clash because of the of molecular, The beginning temperature of weight loss raised with the increasing of PEG molecular weight, but all samples showed the same maximum weight loss range. Different PEG had the same effect on shaping and fluency of granular while not as well as the use of polyvinyl alcohol on molding effect.

关 键 词：碳化硅 聚乙二醇 喷雾造粒 

分 类 号：TQ423.2[化学工程]