Lightweight and high-strength glass foams prepared by a novel green spheres hollowing technique
2015; Elsevier BV; Volume: 42; Issue: 2 Linguagem: Inglês
10.1016/j.ceramint.2015.10.034
ISSN1873-3956
AutoresYanan Qu, Jie Xu, Zhenguo Su, Ning Ma, Xiaoyan Zhang, Xiaoqing Xi, Jinlong Yang,
Tópico(s)Pigment Synthesis and Properties
ResumoLightweight and high-strength glass foams were fabricated from recycled glass powder by a novel green spheres hollowing technique. Utilizing green spheres could tailor the microstructure features and properties of the foams and reduce the sintering temperatures to 680–800 °C. The foaming process of the sample consists of six consecutive stages. The obtained glass foams show uniform structure and small cell size, with apparent density, porosity, thermal conductivity and compressive strength values of 0.129–0.229 g/cm3, 91–95%, 0.055–0.077 W/m K and 0.85–5.92 MPa, respectively. In comparison to glass foams prepared via traditional methods, the obtained glass foams have exceptionally high mechanical strengths. The green spheres hollowing technique is a general, energy-saving and easy scale-up approach for the fabrication of inorganic foams.
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