DING Jun, YUAN Xing-hai, HUANG Min-wen. Study on the Modification of Mangesium Oxychloride Fireproofing Material[J]. 2010, 15(3): 90-92.DOI:
菱镁防火板改性的实验研究
摘要
研究了菱镁制品防止返卤泛霜的工艺和结构改性问题
采用正交试验优化菱镁水泥配比
同时加入微硅粉和粉煤灰及乳白胶等构成的复合改性剂
通过实验找出复合改性剂的最佳配方.复合改性剂中的高分子聚合物包覆在晶体外壁形成良好的防水保护层
提高了耐水性;扫描电子显微镜(SEM)观察微观结构表明
改性剂中的硅酸根在晶体间的空隙中自行交联一方面堵塞毛细孔道
抑制氯离子渗出而返卤泛霜
另一方面又能与Mg2+形成抗水性较强的胶凝结晶化合物
使菱镁制品返卤泛霜的现象得到了明显的抑制
同时也增加了制品强度和减小了翘曲变形性.
Abstract
The modification of chemical structures and techniques for halogenation-proofing of magnesium oxychloride products is studied.Perpendicular tests for optimization of proportioning of magnesium oxychloride cement are primarily adopted and silica fume and fly ash are applied as compound modifying agent for appropriate formulation.The macromolecular polymer of compound modifying agent coats crystalloids surface as water-proof protector to reinforce water resistance.Through scanning electron microscope(SEM)