硅酸盐通报2009，Vol.28Issue(5)：919-925,7.
提高建筑石膏抗折强度和表面硬度的研究
Study on Improving Rupture Strength and Surface Hardness of Set Gypsum
孟丽丰 1刘东辉 1王传平2
作者信息
- 1. 昆明理工大学化学工程学院,昆明,650224
- 2. 玉隆石膏制品有限公司,玉溪,653100
- 折叠
摘要
Abstract
The rupture strength and surface hardness of set gypsum was studied by doping in additive agents as calcium hydroxide、melamine、polyvinyl alcohol、reactant addition agent. The dose of each additive reagent was investigated. The rupture strength was slightly reduced while surface hardness was increased during the increasing dose of calcium hydroxide varied from 0 to 10%. The rupture strength was the highest when the dose of melamine was 2%. The surface hardness was best when the dose of melamine was 4%. The appropriate dose of polyvinyl alcohol was 0.8%. It was demonstrated that the trend of rupture strength and surface hardness of set gypsum was opposite when the dose of reactant addition agent increased from 3%. The SEM shows that the morphology and arrangement of the dihydrate gypsum crystal have been apparently changed by the influence of additive agents. The shape of the micro-crystal was almost needle-like and cylindrical. The rigid net structure has been formed by crossed micro-crystal and the arrangement of crystal has been in order. The gas-pocket structure has been dispersed homogeneously. Accordingly, high rupture strength and surface hardness of the set gypsum have been obtained.关键词
建筑石膏/抗折强度/表面硬度Key words
set gypsum/rupture strength/surface hardness分类
化学化工引用本文复制引用
孟丽丰,刘东辉,王传平..提高建筑石膏抗折强度和表面硬度的研究[J].硅酸盐通报,2009,28(5):919-925,7.
