Correlation between viscoelasticity of aluminosilicate melts and elastic properties of melt-spun fibers

Abstract Aluminosilicate fibers via melt-spinning process have great potential for industrial applications (e.g. refractory, insulation, and reinforcement). While the viscoelastic properties of the melts obviously have relation with the conditions for the melt-spinning process and fiber properties, such dependencies remain poorly understood. Herein, we report the viscoelastic properties of aluminosilicate melts at 800-1450°C, which requires sophisticated measuring system due to the stiffening of melts at lower temperature. Afterward, we analyzed how the high temperature rheological properties influences the melt-spun fiber properties. Interestingly, the elastic moduli of fibers were observed proportional to the reciprocal of shear moduli of the melts at the solid-liquid transient temperature. The results suggest that the shear modulus of the aluminosilicate melt feasibly influences the elastic recovery of melt-fiber during quenching, and impacts the fiber elastic property consequently. The results shows a clear relation between rheological properties of melt and the elastic properties of the specific form of solidified ceramic, fibers.