2015年2月上 施工技术 第44卷第3期 CONSTRUCTION TECHNOLOGY 85 D0I:10.7672/5js2015030085 聚合物超细粉体制备及改性砂浆性能研究* 邓小勇，丁凯2，王燕娜，王斌1 (1.解放军理工大学野战工程学院，江苏南京210007；2.总装工程兵科研一所，江苏无锡214035) [摘要]为开发一种新型的聚合物改性混凝土外料，配制高性能混凝土，利用在化工领域发展很活跃的超临界流 体制备超微粉体技术（其中的RESS法）制备出聚丙烯超细粉体.通过对比试验初步掌握了聚丙烯超细粉体对水 泥砂浆的改性规律，并采用微观技术分析了不同外掺料的改性机理.结果表明：聚丙烯超细粉体能体现有机聚合 物材料与无机矿物超细粉体的部分性能，可以明显改善水泥砂浆的微观结构，提高水泥基体的致密性，增强水泥砂 浆的抗折强度. [关键词]建筑材料：砂浆；聚合物超细粉体；改性 [中图分类号]TU57 [文献标识码]A [文章编号]1002-8498(2015)03-0085-04 Preparation of the Polymer Superfine Powder and Research on Modifying the Performance of Mortar Deng Xiaoyong' Ding Kai Wang Yanna' Wang Bin' (1.College of Field Engineering PLA Unirersity of Science Technology Nanjing Jiangsu 210007 China; 2.The First Engineers Scientific Research Institute of General Armaments Department Wuxi Jiangsu 214035 China) Abstract:To develop a new type of polymer modifying concrete admixture and prepare high performance concrete polypropylene superfine powder is produced by the use of the manufacture technology of superfine powder by supercritical fluid with the RESS method which develops very actively in the chemical field.By means of parative tests the law of mortar modified by polypropylene superfine powder is preliminarily grasped and the modification mechanisms of different admixtures on the mortar are analyzed with microscopic technology.The results show that polypropylene superfine powder can refleet part of the performances of the polymer material and the active mineral joined material it can imp...
聚合物超细粉体制备及改性砂浆性能研究.pdf
