【作者】 刘新年； 郭宏伟；

【Author】 Liu Xinnian Guo Hongwei (School of Materials Science & Engineering,Shaanxi University of Science & Technology,Xi’an 710021)

【机构】 陕西科技大学材料科学与工程学院；

【摘要】 以废玻璃为主要原料,用V₂O₅作为成核剂,再加入其它辅助原料制备了多孔微晶玻璃,研究了发泡温度、保温时间等因素对多孔微晶玻璃泡径及性能的影响。结果表明,发泡温度越高,泡径越大,制品密度越小,最佳发泡温度为725℃;保温时间越长,泡径越大,当在725℃保温25min时,析出的晶体有SiO₂、Al₂SiO₅及Na₂Ca₂（SiO₃）₃,平均泡径为2.039mm,密度为0.65g·cm^-3,热膨胀系数为115.6×10^-7℃^-1抗压强度为7.31MPa,抗折强度为5.83MPa。更多还原

【Abstract】 Waste glass is utilized to prepare porous microcrystalline glass by adding the nucleating agent V₂O₅ and other auxiliaries.The effects of the foam temperature and the holding time on the bubble diameter of porous micro -crystalline glass were studied.The experimental result showed that the higher the foam temperature is, the bigger the bubble diameter is,and the higher the product density;the optimum foam temperature is 725℃.The research also showed that the longer the holding time is,the bigger the bubble diameter is.When the product is held at 725℃for 25min,the precipitated crystal phases are SiO₂,AI₂SiO₅ and Na₂Ca₂（SiO₃）₃, the average bubble diameter is 2.039mm,the density is 0.65 g·cm^-3,the thermal expansion coefficient is 115.6×10^-7℃^-1,the compressive strength is 7.31 MPa,the bending strength is 5.83MPa.更多还原