低分子量聚丙烯酸钠的合成及其在陶瓷中的应用  

Synthesis of Low-molecular Weight Poly-acrylic Acid Sodium and Application in Ceramics

作　　者：杨建红[1] 何肖群[2] 王欢[2] 陈美芬[2] 

机构地区：[1]江西理工大学材料与化学工程学院,赣州341000 [2]佛山科学技术学院,广东528000

出　　处：《佛山陶瓷》2005年第4期4-7,共4页Foshan Ceramics

摘　　要：本文用溶液聚合法,以丙烯酸作为单体,过硫酸钠为引发剂,异丙醇为链转移剂,合成分子量范围在2000～3000的聚丙烯酸钠,得出合成低分子量聚丙烯酸钠的最佳工艺参数,即单体浓度(占去离子水)97.2%,链转移剂浓度234.3%,引发剂用量3.10g,聚合温度90℃,聚合时间3～5h;并把合成的低分子量聚丙烯酸钠用作陶瓷减水剂,结果表明:低分子量的聚丙烯酸钠能大大改善陶瓷泥浆的流动性,而且其解凝范围比较宽,在用量为0.6%时达到最佳减水效果。In this paper,solution Polymerization method was used to prepare Low-molecular Weight (2000 ～3000) Poly-acrylic Acid Sodium (PAAS) on the condition of acrylic acid as monomer,sodium persulfate as initiator, isopropyl alcohol as chain transfer agent.It got the optimum technological parameters:97.2% monomer,234.3% chain transfer agent and 3.10g sodium persulfate.It also got the result that the PAAS could greatly improve the fluidity of the ceramic slurry when the synthesized PAAS as ceramic water reducing agent,futhermerethe deflocculation range was very wide. When the dosage was 0.6%,it got the best water reducing effect.

关 键 词：低分子量聚丙烯酸钠 合成 应用 最佳工艺参数 链转移剂 溶液聚合法 陶瓷减水剂 过硫酸钠 去离子水 单体浓度 聚合温度 聚合时间 陶瓷泥浆 引发剂 异丙醇 流动性 用量 

分 类 号：TQ174.1[化学工程—陶瓷工业]