硫铝酸盐水泥用聚羧酸减水剂的制备及其性能研究
发布时间：2018-08-12 14:22
【摘要】：以聚醚大单体(TPEG)、丙烯酸(AA)、2-丙烯酰胺-2-甲基丙烷磺酸(AMPS)为主要原料合成了适用于硫铝酸盐水泥的聚羧酸系减水剂。通过正交试验研究了单体配比、聚醚大单体侧链分子质量等因素对聚羧酸减水剂分散性能的影响。结果表明,当n(AA)∶n(AMPS)∶n(TPEG)=3.25∶1.5∶2.0,聚醚单体侧链相对分子质量为3000时,合成减水剂的分散性能较好。在此条件下,当反应温度为75℃时,聚羧酸减水剂的分散效果最佳,且浆体没有发生离析分层现象。
[Abstract]:Polycarboxylic acid series water reducer suitable for sulphoaluminate cement was synthesized from polyether macromonomer (TPEG), acrylic acid (AA) 2 acrylamide 2 methyl propane sulfonic acid (AMPS) as the main raw material. The effects of monomer ratio and side chain molecular weight of polyether macromonomer on the dispersion properties of polycarboxylic acid superplasticizer were studied by orthogonal test. The results show that when n (AA): n (AMPS): n (TPEG) = 3.25: 1.5: 2.0, the relative molecular weight of side chain of polyether monomer is 3000, the dispersing property of water reducer is better. Under these conditions, when the reaction temperature is 75 鈩，
本文编号：2179320
[Abstract]:Polycarboxylic acid series water reducer suitable for sulphoaluminate cement was synthesized from polyether macromonomer (TPEG), acrylic acid (AA) 2 acrylamide 2 methyl propane sulfonic acid (AMPS) as the main raw material. The effects of monomer ratio and side chain molecular weight of polyether macromonomer on the dispersion properties of polycarboxylic acid superplasticizer were studied by orthogonal test. The results show that when n (AA): n (AMPS): n (TPEG) = 3.25: 1.5: 2.0, the relative molecular weight of side chain of polyether monomer is 3000, the dispersing property of water reducer is better. Under these conditions, when the reaction temperature is 75 鈩，
本文编号：2179320
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