A Comparative Study of Production of Glass Microspheres by using Thermal Process

2nd International Conference on Materials Engineering and Nanotechnology

材料科学;物理学

Lee, May Yan^1 ; Tan, Jully^1 ; Heng, Jerry Y.Y.^2 ; Cheeseman, Christopher^3

Faculty of Engineering, Technology and Built Environment UCSI University, No. 1, Jalan Menara Gading, UCSI Height, Cheras, Kuala Lumpur

56000, Malaysia^1

Faculty of Engineering, Department of Chemical Engineering, Imperial College London, South Kensington Campus, SW7 2AZ, United Kingdom^2

Faculty of Engineering, Department of Civil and Environmental Engineering, Imperial College London, South Kensington Campus, SW7 2AZ, United Kingdom^3

关键词: Comparative studies;    Glass microspheres;    Hollow glass microspheres;    Morphology changed;    Qualitative analysis;    Spherical particle;    Spherical surface;    The scanning electron microscopes (SEM);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/205/1/012022/pdf
DOI  :  10.1088/1757-899X/205/1/012022

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Microspheres are spherical particles that can be distinguished into two categories; solid or hollow. Microspheres typical ranges from 1 to 200 μm in diameter. Microsphere are made from glass, ceramic, carbon or plastic depending on applications. Solid glass microsphere is manufactured by direct burning of glass powders while hollow glass microspheres is produced by adding blowing agent to glass powder. This paper presented the production of glass microspheres by using the vertical thermal flame (VTF) process. Pre-treated soda lime glass powder with particle sized range from 90 to 125μm was used in this work. The results showed that glass microspheres produced by two passes through the flame have a more spherical shape as compared with the single pass. Under the Scanning Electron Microscope (SEM), it is observed that there is a morphology changed from uneven surface of glass powders to smooth spherical surface particles. Qualitative analysis for density of the pre-burned and burned particles was performed. Burned particles floats in water while pre-burned particles sank indicated the change of density of the particles. Further improvements of the VTF process in terms of the VTF set-up are required to increase the transformation of glass powders to glass microspheres.