摘要： 采用反相乳液聚合法，以部分中和丙烯酸钠和长链反应型单体 LP为主要单体，采用过硫酸钾（KPS）－亚硫酸氢钠（NaHSO3）氧化还原引发体系聚合反应，制备了一种新型耐盐型增稠剂。利用场发射电子扫描显微镜（FE-SEM）对产物形貌进行了表征，研究了长链反应型单体 LP的改变量对聚合产物耐盐性的影响，考察了引发剂、交联剂的用量对产物耐盐性的影响。结果表明：当长链反应型单体 LP的添加量为单体总量的 6.7%，引发剂和交联剂的用量分别为单体总量的 0.4%和 0.2%时，所得产物的增稠效果最佳，耐盐性最好。
关键词:
反相乳液聚合,
丙烯酸钠,
长链反应型单体,
增稠剂
Abstract: The novel salt- tolerant thickener were prepared via inverse emulsion polymerization of partially neutralizing sodium acrylate and long-chain reactive monomer LP as the monomers at the presence of potassium persulphate (KPS )and sodium bisulfite(NaHSO3) as redox initiators. The morphologies of the product was characterized by field-emission scanning electron microscopy(FE-SEM). The influences of the long-chain reactive monomer percentage, initiator dosage and crosslinker amount on salt- tolerant properties were studied in detail. The results showed that when the amount of the long-chain reactive mono-mer LP, initiator and crosslinker were accounted for 6. 7%,0.4% and 0. 2% of the monomers respectively,the product provided the best thickening effect and salt-tolerance.
Key words:
inverse emulsion polymerization,
sodium acrylate,
long-chain reactive monomer,
thickener
彭文杰, 陈学刚, 于善普. 新型耐盐型增稠剂的制备与性能[J]. 涂料工业, 2012, 42(6): 55-59.
Peng Wenjie, Chen Xuegang, Yu Shanpu. Preparation and Performance of a Novel Salt-tolerant Thickener[J]. Paint & Coatings Industry, 2012, 42(6): 55-59.