栲胶改性氨基磺酸系减水剂的工艺研究  

Study on Technology of Modified Aminosulfonic Acid-based Superplasticizer by Vegetable Tannin

作　　者：蒋新元[1] 陈茜文[1] 万晓清[2] 

机构地区：[1]中南林学院工业学院,湖南长沙410004 [2]中南林学院图书馆,湖南长沙410004

出　　处：《生物质化学工程》2006年第1期13-16,共4页Biomass Chemical Engineering

基　　金：中南林学院人才引进基金资助(101-0237)

摘　　要：利用栲胶部分取代苯酚制改性氨基磺酸系减水剂，研究了其改性工艺。结果表明较佳改性的改性工艺条件为：栲胶占栲胶与苯酚总质量的25％～37．5％。反应时间3h、温度90℃、pH值9．0～11．0。改性产物的分散性能较未改性产物略有下降，但2h流动度损失增大。当掺入量为0．5％，水灰比为0．28：1时。掺改性产物和掺未改性产物的净浆流动度分别为240和252mm。In this paper the modifying technology.of vegetable tannin in place of phenol partially to produce aminosulfonic acidbased superplasticizer was studied. The result indicates that the better modified technological conditions are as follow：mass percent of vegetable tannin to total vegetable tannin and phenol is between 25 % - 37.5 %, reaction time is about 3 h, temperature is about 90 ℃, and pH is between 9.0 - 11.0. The modified product has a little worse dispersing capability than that of unmodified product, but its slump loss is a little bigger. When the dosage in cement is 0.5 %, and the water-cement ratio is 0.28 ： 1, the fluidity of cement paste added modified and unmodified product is 240 and 252 mm, respectively.

关 键 词：栲胶 苯酚 氨基磺酸 高效减水剂 

分 类 号：TU528.042[建筑科学—建筑技术科学]