废弃聚苯颗粒对多孔烧结制品性能的影响  

Effect of Doping Waste Polystyrene Granules on Properties of Porous Sintered Products

作　　者：马保国[1] 袁龙[1] 穆松[1] 王耀城[1] 

机构地区：[1]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070

出　　处：《建筑材料学报》2010年第4期505-508,共4页Journal of Building Materials

基　　金："十一五"国家科技支撑计划基金资助项目(2006BAF02A29)

摘　　要：通过对废弃聚苯颗粒(waste polystyrene granule,WPG)燃烧特性的分析,研究了烧成制度对掺WPG的粉煤灰页岩多孔烧结制品性能的影响.结果表明:在WPG燃烧阶段延长烧成时间,有利于烧结过程的进行,试件的尺寸收缩率略有增加;与直接升温到1000℃相比,在WPG挥发分燃烧阶段(380℃)延长烧结时间1h,试件的抗压强度提高了9.91%,在WPG固定碳燃烧阶段(480℃)延长烧结时间1h,试件的抗压强度提高了18.13%;在480℃下延长烧结时间1h的试件其微观结构要优于在380℃下延长烧结时间1h的试件.在480℃下延长烧结时间1h可制备出抗压强度为20.4MPa、密度为1.52g/cm3、显气孔率为39.53%的烧结制品.Based on analysis of the combustion characteristic of waste polystyrene granule（WPG）,properties of specimens prepared by different sintering systems were studied.The results show that prolonging sintering period when WPG are combusting will promote the sintering reactions and enlarge the shrinking percentage.Comparing to raise temperature to 1000 ℃ directly,if the sintering period was prolonged for 1h at 380 ℃,when volatile matters of WPG are combusting,the compressive strength increased by 9.91%.If the sintering period was prolonged for 1 h at 480 ℃,when fixed carbon of WPG is combusting,the compressive strength increased by 18.13%.The micro structure of the specimens made by prolonging the combustion period for 1 h at 480 ℃ is better than those made by prolonging the combustion period for 1 h at 380 ℃.The sintered sample made by prolonging the combustion period for 1 h at 480 ℃ has a compressive strength of 20.39 MPa,density of 1.52 g/cm3,apparent porous percentage of 39.53%.

关 键 词：废弃聚苯颗粒(WPG) 燃烧特性 抗压强度 显气孔率 

分 类 号：TU522.1[建筑科学—建筑技术科学]