低分子量聚丙烯酸钠的制备及其在ZrO_2陶瓷料浆中的应用

Synthesis of low molecular weight sodium polyacrylate and application in ZrO_2 slurry

以丙烯酸为单体，过硫酸铵为引发剂，水为溶剂，采用溶液聚合方法合成了低相对分子质量（550-2000）的聚丙烯酸钠（PAANa），并研究了聚丙烯酸钠在ZrO2料浆（70（wt）％）系统中的分散性能。结果表明：相对分子质量为550—2000的PAANa有很好的稀释作用，尤其分子量为550时稀释作用最好；加入聚丙烯酸钠后料浆触变性较小。

Solution polymerization were applied and low relative molecular weight poly- acrylic acid sodium（550 - 2000） was produced with acrylic acid as monomer, ammonium persulfate as initiator and water as solvent. The dispersion performance of PAANa in ZrO2 slurry （70（wt）%） was studied.The result showed that PAANa（550 - 2000） had better diluted effect when the addition of PAANa was 0.2（wt）% - 0.3（wt）%. The addition of PAANa had little influence on the thixotrophy of the slurry.