Influence of Hydroxyl Content on Structural Relaxation in Oxy-fuel Combustion Float Glass
ZHAN Weitao1, HE Jianxiong2,3, WANG Yizheng4, JIANG Hong1,2,3
1 Special Glass Key Laboratory of Hainan Province, Hainan University, Haikou 570228; 2 AVIC Hainan Special Glass Technology Co., Ltd., Chengmai 571924; 3 State Key Laboratory of Special Glass, Chengmai 571924; 4 School of Physics and Electronic Engineering, Hainan Normal University, Haikou 571100
Abstract: The present work investigated the influence of hydroxyl content on structural relaxation in oxy-fuel combustion float glass by means of infrared spectroscopy and dynamic mechanical analysis (DMA). An α-relaxation similar to metallic glass at above 540 ℃ was observed in the oxy-fuel combustion float glass. The apparent activation energy (obtained by fitting Arrhenius equation) values for oxy-fuel combustion float glass with 2∶1 atmosphere ratio (H2O/CO2 gas volume ratio), oxy-fuel combustion float glass with 1∶1 atmosphere ratio and air-fuel combustion float glass are 4.74 eV,5.82 eV and 7.50 eV, respectively. Meanwhile, the configurational entropy (obtained by fitting the configurational entropy loss law) values of oxy-fuel combustion float glass are higher than that of air-fuel combustion float glass, in which atmosphere ratio of 2∶1 corresponds to a greater configurational entropy compared to atmosphere ratio of 1∶1. This connoted the more disordered internal structure of oxy-fuel combustion float glass compared to air-fuel combustion float glass, as well as the disordering effect of the water vapor in the furnace onto the internal structure of oxy-fuel combustion float glass, and thereby confirming that the hydroxyl content exerts a certain influence on structural relaxation of the oxy-fuel combustion float glass.
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2018, Vol. 32 
