摘要
采用水晶玻璃废料为主要原料,添加CaO、Al_2O_3、ZnO和着色剂等,经过熔融、晶化制备了硅灰石型微晶玻璃。通过差示扫描量热法(DSC)、X射线衍射(XRD)、扫描电子显微镜(SEM)等技术,研究了晶化温度,CaO和Al_2O_3含量对微晶玻璃性能和结构的影响.结果表明,水晶玻璃废料添加量可达62wt%,微晶玻璃最佳晶化温度为905℃,主晶相为硅灰石(CaSiO_3),抗弯强度达65 MPa;随着CaO含量的增大,微晶玻璃体积密度和抗弯强度增大,CaO含量为21wt%时达到最大值;随着Al_2O_3含量增大,微晶玻璃体积密度和抗弯强度减小,Al_2O_3含量为7wt%时为最佳点.
Wollastonite glass-ceramics were prepared with waste crystal glass as main raw materials,CaO,Al_2O_3,ZnO and colorants added as auxiliary materials by melting crystallization method.Influence of the crystallization temperature,CaO and Al_2O_3 content on the structure and properties were characterized by DSC,XRD and SEM.The results showed that waste crystal glass is added to 62 wt%,the optimal crystallization temperature is 905 ℃,main phase of glass-ceramics is wollastonite（CaSiO3）and flexural strength is 65 MPa.With the increased of CaO,glass-ceramic bulk density and flexural strength increased,we got the maximum value when CaO is added to 21wt%;With Al_2O_3 content increased,bulk density and flexural strength of glass-ceramic decreased,the optimal point we could get when Al_2O_3 is added to 7wt%.
出处
《陕西科技大学学报（自然科学版）》
2016年第6期59-63,共5页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(51472151)
陕西省科技厅自然科学基础研究计划项目(2015JM5162)
关键词
微晶玻璃
硅灰石
晶化
力学性能
glass-ceramics
wollastonite
crystallization
mechanical property
