水泥助磨剂分子结构对其助磨性能的影响(英文)  

Impact of Molecular Structure of Cement Grinding Aids on Grinding Performance

作　　者：王剑锋[1] 王栋民[1] 李端乐[1] 唐官保[1] 杜程[1] 熊威[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《硅酸盐学报》2013年第8期1111-1115,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金面上项目(50872151)资助项目

摘　　要：水泥助磨剂的分子结构/官能团对其助磨性能具有决定性的影响,为此选择了熟料–石膏二元体系作为研究对象,从吸附分散角度,研究了极性官能团的数量和种类以及非极性官能团的大小对水泥助磨剂助磨性能的影响。结果表明:一元极性有机物、二元酸和非极性分子基本没有助磨作用;二元以上极性有机物有较好的助磨作用,并且随着极性官能团数量的增加和非极性官能团的结构增大,助磨性能变好。提出了吸附分散模型,解释了水泥助磨剂分子结构对其助磨性能影响的原因。The grinding performance of cement grinding aids is determined by molecular structure/functional group. So the influence of functional groups of grinding aids （such as the number and types of polar groups and the size of non-polar functional groups） on the performance of grinding a clinker-gypsum mixture was investigated. The results show that the organics with one polar group, diacids as well as non-polar molecules have no obvious effect on the grinding performance, however, the organics with more than two polar groups give a better grinding performance, and the grinding performance becomes superior with the increase of the number of polar groups and the structure of nonTpolar groups. Based on the experimental results, an adsorption dispersion model was proposed to explain the impact of molecular structure of grinding aids on the grinding performance.

关 键 词：分子结构 助磨性能 极性基团 非极性基团 助磨剂 

分 类 号：TQ174[化学工程—陶瓷工业]