超支化型混凝土减缩剂的合成及其性能研究  

Synthesis and performance research on hyperbranched polymers department of shrinkage reducing admixture for concrete

作　　者：温达[1] 矦贵海[1] 张宇[1] 寿崇琦[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022

出　　处：《新型建筑材料》2015年第3期34-37,共4页New Building Materials

摘　　要：首先合成了一种端羟基的超支化聚酰胺酯,然后用减缩基团对其末端进行改性,合成一种超支化型混凝土减缩剂。对其进行了表面张力、收缩性能和砂浆强度测试,结果表明,合成的超支化混凝土减缩剂有很好的减缩性能,并且对水泥砂浆强度影响很小。Hydroxyl-terminated hyperbranched polyamide ester was synthesized and modified by reductible groups,then a hyperhranched polymers department of shrinkage reducing admixture CSRA） for concrete was obtained. Surface tension,concrete shrinkage reducing tests and mortar strength test were carried out. The test results indicated that the hyperbranched polymers department of SRA for concrete had good shrinkage reducing effect,and had a little negative effect on the cement mortar strength.

关 键 词：减缩剂 超支化聚合物 表面张力 砂浆强度 

分 类 号：TU528.042[建筑科学—建筑技术科学]