常温合成聚羧酸减水剂性能影响因素研究  

Study on the influencing factors of properties of polycarboxylic acid superplasticizers synthesized at room temperature

作　　者：王恒 梁惠 尹丹 黄煌 WANG Heng;LIANG Hui;YIN Dan;HUANG Huang(Guilin Huayue Environmental Technology Co.Ltd.,Guilin 541805,China)

机构地区：[1]桂林华越环保科技有限公司,广西桂林541805

出　　处：《新型建筑材料》2024年第12期131-134,共4页New Building Materials

摘　　要：通过常温合成聚羧酸减水剂试验,研究了聚合大单体、引发体系、链转移剂、合成温度和滴加时间等对聚羧酸减水剂性能的影响。结果表明,选取HPEG作为聚合大单体,固定酸醚比为4.0,氧化剂、TGA用量分别为大单体质量的1.2%、0.5%,m(APS)∶m(H_(2)O_(2))∶m(Vc)=1∶1∶0.5,初始合成温度为15℃,B料滴加时间为140 min时,常温合成聚羧酸减水剂PCE-H性能较优,混凝土应用性能优异,优于市面上其他同类产品。By synthesizing polycarboxylic acid superplasticizers at room temperature,the effects of polymerization monomer,initiator component,chain transfer agent,syntheses temperature and addition time on the properties of polycarboxylic acid superplasticizers were studied.The results showed that HPEG was selected as the polymerization monomer,with a fixed acid ether ratio of 4.0 and oxidant and TGA dosages of 1.2%and 0.5%of the monomer mass,respectively,m(APS)∶m(H_(2)O_(2))∶m(Vc)=1∶1∶0.5,the initial synthesis temperature of 15℃and the addition time of B material of 140 min,the PCE-H polycarboxylic acid superplasticizer synthesized at room temperature has better performance and excellent concrete application performance,which is superior to other similar products on the market.

关 键 词：聚羧酸减水剂 链转移剂 净浆试验 合成温度 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]