摘要
以马来酸酐(MA)、聚乙二醇(PEG)和丙烯酸(AA)等为原料酯化共聚合成一种高分子水泥助磨剂。通过加入不同分子量的聚乙二醇合成一系列侧链长度的高分子助磨剂,研究侧链长度变化对水泥高分子助磨剂性能的影响。结果表明:当PEG分子量为400时,合成的高分子助磨剂助磨效果最佳。对比空白样,水泥比表面积增加32.87%,胶砂3d和28d抗折强度分别提升17.86%和22.73%;3d和28d抗压强度分别提升48.93%和28.32%。
Polymer grinding aids （GAs） were synthesized from maleic anhydride （MA）, polyethylene glycol （PEG） and acroleic acid （AA） under different process conditions. The effect of side-chain length on the properties of polymer grinding aids was studied by adding different molecular weight of PEG. The results showed the properties of polymer grinding aids were preferably conducted at a PEG molecular weight of 400. As compared with the control sample, the specific surface area increased by 32. 87%, the flexural strength increased by 17. 86% at 3 d and 22. 73% at 28 d, and the comprehensive strength increased by 48. 93% at 3 d and 28. 32%at 28 d for samples with polymer GAs obtained under the optimum condition.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第12期86-90,共5页
Materials Reports
关键词
高分子助磨剂
水泥
聚乙二醇
侧链长度
强度
polymer grinding aids, cement, PEG, side-chain length, strength
