摘要
制备了水解聚丙烯酰胺（ＨＰＡＭ）、磺甲基化聚丙烯酰胺（ＳＰＡＭ）及磺化聚苯乙烯（ＳＰＳ）等几种水溶性聚合物。研究了水溶性聚合物的种类、阴离子度、分子量、表面活性、掺量、ｐＨ值等因素对水泥净浆流动性的影响。结果表明阴离子聚合物及适中的阴离子度、分子量、掺量、ｐＨ值有利于水泥的分散，从而改善水泥的流动性。聚合物的电荷保护作用是影响水溶性聚合物改性水泥分散的主要因素。提出了聚合物分散水泥粒子与分子链性质相关的作用机理。
In this paper, several water-soluble polymers including hydrolyzed polyacrylamide (HPAM), sulfomethylated polyacrylamide (SPAM) and sulfonlated polystyrene (SPS) were prepared, and the effects of the prepared water-soluble polymers on the fluidity of cement paste were studied. The experimental results show that anionic polymers which have suitable molecular weight , ionization degree, dosage and pH value favour the enhancement of the fluidity of cement paste. And a mechanism regarding the dispersing effect of polymer to its structure parameters is proposed.
出处
《功能高分子学报》
CAS
CSCD
1998年第1期16-22,共7页
Journal of Functional Polymers
基金
四川省科委应用基础研究基金
