硅酸盐通报2013，Vol.32Issue(6)：1182-1186,5.
大分子单体聚乙二醇单甲醚丙烯酸酯(MPEGAA)的合成
Synthesizing of the Macromonomer Polyethylene Glycol Monomethyl Ether Methyl Acrylate (MPEGAA)
摘要
Abstract
The macromonomer polyethylene glycol monomethyl ether methyl acrylate of the polycarboxylice acid superplasticizer (MPEGAA) was prepared by direct esterification of acrylic acid (AA) and methoxy polyethylene glycol (MPEG).Through orthogonal test to determine the dosages of each monomer.The results show that the best esterification condition of the macromonomer includes:n (AA):n (MPEG) =3.5:1,the dosages of inhibitor (hydroquinone,calculated by the mass faction in AA) and catalyst (paratoluenesulfonic acid,calculated by mass fraction in MPEG + AA) are 1.2％ and 5.5％ respectively,the esterification temperature is 95 ℃,and the esterification time is 6 h.The polycarboxylice acid superplasticizer of MPEGAA-AA-AMPS made from the mocromonomer MPEGAA which is produced in the best esterification condition bears fairly good dispersibility and dispersion retention.The initial fluidity of the cement paste with 0.15％ (in mass) polycarboxylice superplasticizer is 300 mm,315 mm after 1 h,290 mm after 2 h.关键词
大分子单体/正交试验/直接酯化/MPEGAA-AA-AMPS聚羧酸高效减水剂Key words
macromonomer/ orthogonal test/ direct esterification/ polycarboxylice acid superplasticizer of MPEGAA-AA-AMPS分类
建筑与水利引用本文复制引用
陈宝璠..大分子单体聚乙二醇单甲醚丙烯酸酯(MPEGAA)的合成[J].硅酸盐通报,2013,32(6):1182-1186,5.基金项目
福建省教育厅A类科技资助项目(JA11329,JA12412) （JA11329,JA12412）
福建省泉州市技术研究与开发资助项目(2010G7) （2010G7）
