填料对硅烷改性聚醚密封胶性能的影响及耐候机理研究  

Effect of Different Fillers on Property and Weathering Peoperties Mechanism of Silane-modified Polymer Sealants

作　　者：赖振峰[1,2] 王万金[1,2] 朱宁[1,2] 夏义兵[1] 王靖[1,2] 吴敬朋[1] 马强[1] 查炎鹏[1] 

机构地区：[1]北京市建筑工程研究院有限责任公司,100039 [2]北京市功能性高分子建筑材料工程技术研究中心,100039

出　　处：《化工设计通讯》2016年第5期132-133,171,共3页Chemical Engineering Design Communications

基　　金：北京市科委课题论文;课题名称:装配式住宅用耐候密封材料关键技术研究与应用(Z141100000714004)

摘　　要：以硅烷改性聚醚为密封胶基体材料制备出一种建筑外墙用高耐候密封胶。研究了填料对硅烷改性聚合物密封胶的性能影响,轻质和重质碳酸钙的复合使用改善产品的力学性能和流变性能。进过对密封胶耐紫外老化、耐湿热老化、耐盐雾老化性能的测试后,密封胶的机械性能有一定变化,拉伸强度、硬度稍微降低,断裂伸长率增加,总体变化趋势不大。利用扫描电镜(SEM)和能谱(EDX)对暴晒1年的密封胶表面微观结构和元素变化进行分析,在密封材料体系中,硅烷改性聚醚聚合物结构具有良好的稳定性。纳米二氧化硅和重钙、轻钙的配伍,及填料与硅烷改性聚醚聚合物的相容性是提高密封材料耐候性的关键。Silane modified polyether sealant base material prepare a high exterior wall weather sealant.The effects of fillers on silane-modified polymer sealant performance,light and heavy calcium carbonate compound used to improve the mechanical and rheological properties of the product.Been to UV aging resistance of the sealant,resistance to heat aging and salt fog test after aging properties,the mechanical properties of the sealant has certain variations,tensile strength,hardness slightly decreased,increased elongation at break,the general trend is not.Scanning electron microscopy（SEM）and spectroscopy（EDX）for 1-year exposure sealant surface microstructure and elemental analysis of changes in the sealing material systems,the silane modified polyether polymer structure having good stability.Nano-silica and TSP,light calcium compatibility,and a filler and silane-modified polyether polymer compatibility of the sealing material is the key to improving weather resistance.

关 键 词：硅烷改性聚醚 密封胶 填料 耐候机理 

分 类 号：TQ436.6[化学工程]