聚乙烯吡咯烷酮对PESA-H_2O-SiC悬浮液流变性能的影响  

Effect of Polyvinylpyrrolidone on Rheology of Aqueous SiC Suspensions with Polyepoxysuccinic Acid

作　　者：潘丽吉[1] 叶飞[1] 郭露村[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《陶瓷学报》2013年第2期161-166,共6页Journal of Ceramics

基　　金：江苏省科技支撑计划项目(编号:BE2009169)

摘　　要：研究了聚乙烯吡咯烷酮(PVP)对聚环氧琥珀酸(PESA)稳定的水基碳化硅(SiC)悬浮液流变性能的影响。结果表明,在pH值为9.0时,添加一定比例的少剂量的二元分散剂即可改善SiC悬浮液的分散性。当分散剂总添加量为0.4wt%,PESA与PVP的质量之比为3∶1时,悬浮液的流变性最佳。固含量为40vol%时,PESA稳定的SiC悬浮液完全絮凝,而添加PVP作为第二分散剂可使体系较好的分散。此外,添加二元分散剂PESA/PVP显著提高了SiC悬浮液的抗电解质性能。Effect of polyvinylpyrrolidone on theology of aqueous SiC suspensions stabilized with polyepoxysuccinic acid was investigated. The results showed that low dosage of binary dispersant was able to enhance the dispersion of SiC suspension at pH 9.0. When the total amount of dispersant was 0.4wt% and the ratio of PESA to PVP was 3：1, the slurry obtained the lowest viscosity. With 40vo1% solid Ioadings, SiC suspensions with PESA were completely flocculated, while those with the co-addition of PESA and PVP were well dispersed. In addition, adding PESNPVP as a binary dispersant was able to significantly increase the anti-electrolyte property of SiC suspension.

关 键 词：聚乙烯吡咯烷酮 聚环氧琥珀酸 碳化硅悬浮液 流变性 

分 类 号：TQ174.75[化学工程—陶瓷工业]