Abstract:

Studies are carried out on the feasibility of two kinds of sulfates as the dispersion medium of CPAM dispersion polymerization,as well as the impact of different kinds of dispersants on CPAM dispersion polymerization. As the solubility fluctuates sharply with the change of temperature,sodium sulfate is not suitable for being used as the dispersion medium for CPAM dispersion polymerization. Non-ionic dispersants,due to their poor solubility in saline medium,are not suitable for being used as the dispersant,either. Therefore,ammonium sulfate and PDMDAAC are selected as the dispersion medium and dispersant respectively,in order to obtain products with preferable fluidness. Studies show that, for ammonium sulfate,the optimum dosage is 27%-29%,and PDMDAAC is 10%-18%.

Key words: CPAM, dispersion polymerization, saline medium, dispersion medium；dispersant

摘要：

考察了CPAM分散聚合中,两种不同硫酸盐作为分散介质的可行性,并详细讨论了不同类型的分散剂对盐水介质中CPAM分散聚合的影响。通过研究发现,由于硫酸钠在水中的溶解度随温度波动较大,不适合作为CPAM分散聚合的分散介质。另外实验表明,由于非离子型分散剂在盐水介质中溶解性不佳,不适合作为CPAM分散聚合的分散剂。故选择硫酸铵与PDMDAAC分别作为盐水介质中CPAM分散聚合的分散介质与分散剂,并确定了硫酸铵最佳用量为聚合体系质量的27%~29%,PDMDAAC最佳用量为单体质量的10%~18%,该条件下制得的产品具有较好的流动性。

关键词: 阳离子聚丙烯酰胺, 分散聚合, 盐水介质, 分散介质, 分散剂

CLC Number: 

• TQ314.255