YANG Chao, RUAN Yuzhong, ZENG Huarui

（College of Materials Science and Engineering, Fuzhou University, Fuzhou 350002）

Abstracts: The influences of different amount of CaF₂ agents on crystalline phases, crystallization behavior and properties of glass-ceramics prepared from abandoned architectural glass were discussed. XRD, SEM techniques and related analysis softwares were used to characterize the crystalline phases and microstructures. The performance indexes were also tested.The results show that the major crystalline phases are Na₂Ca₃Si₆O₁₆, SiO₂ and NaCa₂FSiO₄. 4.0% of CaF₂ is the best dosage.The corresponding content of crystalline phase is up to 53.96%, bulk density is 2.145g·cm-3, water absorption is 0.371% and bending strength is 93.12 MPa.

Kerwords: glass-ceramics, crystalline phase, CaF₂ nucleating agents, performance