热处理制度对微晶泡沫玻璃性能的影响  

EFFECTS OF HEAT TREATMENT ON THE PERFORMANCE OF POROUS MICRO-CRYSTALLINE GLASS

作　　者：朱凯华[1] 陆雷[1] 陈莹[1] 张艺龄[2] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009 [2]江苏省特种设备安全监督检验研究院无锡分院,无锡214100

出　　处：《中国陶瓷》2012年第4期47-49,68,共4页China Ceramics

摘　　要：以粉煤灰为主要原料,用CaCO3作为发泡剂,Na3PO4·12H2O作为稳泡剂,制备出了性能优良微晶泡沫玻璃。研究了发泡温度、发泡时间等因素对微晶泡沫玻璃性能的影响。结果表明,随着发泡温度的升高和保温时间的增加,体积密度均先减小后增大,最佳发泡温度1025℃,发泡时间30min。析出的晶体有钙长石CaAl2Si2O8、普通辉石Ca(Mg,Fe,Al)(Si,Al)2O6;密度为1.02g.cm-3;热膨胀系数为7.51×10-6/℃;抗压强度为19.2MPa;抗弯强度为16.3MPa。Fly-ash is utilized to prepare porous microcrystalline glass by adding the foaming agent CaCO 3 and foam stabilizer Na3PO4.12H2O.The effects of the foam temperature and the holding time on the performance of porous micro-crystalline glass were studied.The experimental result showed that as the foam temperature and the holding time increased,bulk density is decreased first and then increased.The optimum foam temperature is 1025℃ and holding time is 30min.The precipitated crystal phases are CaAl 2Si2O8 and Ca（Mg,Fe,Al）（Si,Al） 2O6,the density is 1.02g.cm-3,the thermal expansion coefficient is 7.51×10-6/℃,the compressive strength is 19.2MPa,the bending strength is 16.3MPa.

关 键 词：微晶泡沫玻璃 发泡温度 发泡时间 

分 类 号：TQ171.722[化学工程—玻璃工业]