交联度对聚丙烯酸盐增稠剂性能的影响  

THE EFFECT OF CROSSLINKING DENSITY ON PROPERTIES OF POLYACRYLATE SALT THICKENING AGENT

作　　者：王进[1] 于善普[2] 王京霞 史显宗[2] 

机构地区：[1]中山大学高分子化学所,广东广州510275 [2]青岛化工学院高分子化学实验室,山东青岛266042

出　　处：《印染助剂》1999年第6期5-7,共3页Textile Auxiliaries

摘　　要：研究了反悬浮法合成聚丙烯酸盐（ＰＡＡＳ） 增稠剂过程中，Ｎ ，Ｎ － 亚甲基双丙烯酰胺（ ＭＢＡＡ） 用量对ＰＡＡＳ 吸水、增稠和流变性的影响。发现随ＭＢＡＡ 用量的增加，ＰＡＡＳ 的吸水性呈先上升而后下降的趋势，并当用量为单体质量的１ ‰时，ＰＡＡＳ 的最大吸水倍率（ Ｑｍ ） 、吸收自来水、吸收０ ．９ ％ 氯化钠溶液分别高达１２００ 、３５０ 、１００ｇ／ｇ ；ＰＡＡＳ 水增稠体系的触变指数随ＭＢＡＡ 用量的增加而提高：当用量为１ ‰、１ ．５ ‰时，ＰＡＡＳ 增稠性下降显著；当用量为２ ‰时，增稠性曲线呈反Ｓ 型；当用量为３ ‰或更高时。A research is made on the effect of the amount of N,N-methylene-bis(acrylamide)(MBAA) on properties of water absorption, thickening and rheology of polyacrylate salt(PAAS) during synthesizing PAAS thickening agent by counter-suspension method. It was found that water absorption of PAAS showed up first then going down gradually with increasing the amount of MBAA. When the amount is equivalent to 1‰ monomer mass, the maximum multiple rates (Qm) of absorption of water, tap water and 0.9% sodium chloride solution of PAAS reached as high as 1200,350 and 100 respectively. The thixotropic index of water-based PAAS thickening en_hanced with increasing the amount of MBAA. When the amount is 1‰, 1.5‰, the thickening property of PAAS de_grade with a large margin. When the amount is 2‰, the curve of thickening property showed a reverse S shape. And when the amount is 3‰, the thickening property degraded slowly.

关 键 词：聚丙烯酸盐 亚甲基 双丙烯酰胺 增稠剂 

分 类 号：TQ610.499[化学工程—精细化工] TS194.2[轻工技术与工程—纺织化学与染整工程]