缓释型聚羧酸减水剂的制备及性能研究  

The preparation and study on performances of slow-release type polycarboxylic acid water reducer

作　　者：邱聪[1] 

机构地区：[1]厦门市建筑科学研究院集团股份有限公司,福建厦门361004

出　　处：《新型建筑材料》2017年第3期139-143,共5页New Building Materials

摘　　要：通过对合成工艺的优化调整研究制备2种缓释型聚羧酸减水剂PCE-A和PCE-B,反应温度为60℃,n(AA)∶n(HEA)∶n(TPEG)分别为1∶3∶1和1∶2.5∶1。通过采用红外光谱(IR)、凝胶色谱(GPC)、表面张力、ζ电位、净浆和混凝土性能进行测试分析表明,PCE-A具有更低的表面张力和ζ电位,在2 h和3 h的经时净浆和混凝土性能表现更好,而PCE-B在初始和经时1 h的净浆和混凝土的性能表现更好。This article studied on the adjustment and optimization of synthetic process of preparation of two kinds of slowrelease typed polycarboxylic acid water reducer PCE-A and PCE-B under the situation of 60 ℃ reaction temperature and the mole ratio of raw material n（AA）：n（HEA）：n（TPEG） is respectively 1：3：1 and 1.0：2.5：1.0. The synthesized polymer is characterized by infrared spectra （IR）, gel permeation chromatography （GPC）,the surface tension, zeta potential, net slurry and concrete testing. It reveals that PCE-A has A lower surface tension and zeta potential,and better performance than PCE-B in 2 h and 3 h paste and concrete test,while PCE-B has better performance in initial time and lh in paste and concrete test.

关 键 词：聚羧酸减水剂 缓释 制备 性能 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]