摘要
以对氨基苯磺酸钠、双酚A和甲醛等为原料合成了绿色高性能氨基磺酸(AS)高效减水剂,考察了反应单体的摩尔比和工艺参数对水泥颗粒分散效果的影响。结果表明,在n(双酚A):n(对氨基苯磺酸钠)= 0.625:1,n(对氨基苯磺酸钠+双酚A):n(甲醛)=1:1.2,pH=10～11,90～100℃反应5～6 h,得到的AS高效减水剂对水泥颗粒分散性最好。应用性能研究表明,AS高效减水剂与传统的氨基磺酸高效减水剂相比具有成本低,绿色,生产工艺简单的特点,应用前景广阔。
Green and highly effective amino-sulfonic acid （AS）water reducing agent was synthesized from p-aminobenzene sulfonic acidbisphenol A and formaldehyde. The influences of the molar ratio of monomers, pH, reaction temperature and reaction time on the performance of the product was studied. The results showed that when n（bisphenol A） ： n（p-aminobenzene sulfonic acid） 0. 625 ： 1, n （p-aminobenzene sulfonic acid ＋ bisphenol A） ： n（formaldehyde） = 1 ： 1.2, pH = 10 - 11, temperature = 90 - 100 ℃, and reaction time -5 - 6 h, the AS water reducing agent had better dispersing ability for cement and concrete particles. In comparison with the conventional amino-sulfonic acid, AS has the characteristics of highly effective water reducing ability, low cost and simple preparation process.
出处
《精细石油化工》
CAS
CSCD
北大核心
2008年第1期44-48,共5页
Speciality Petrochemicals
关键词
绿色
氨基磺酸系
高效减水剂
制备
分散性能
green
amino-sulfonic acid
high range water-reducer
synthesis
appliance performance .
