The Prediction and Control Method of Warpage Value of Chemical Tempered Ultra-thin Float Glass
This study investigated the ultra-thin low-aluminum touch screen produced by the float process,analyzed the effects of air-side silicon coating and the average particle sized of the SiO2 colloidal particles in the coating solution on the chemical tempering warpage value of glass.At the same time,the effects of co-solvent,water consumption and reaction time were studied by controlling variables on the particle size of SiO2 colliods.The results showed that the coating of the air side of the glass can reduce the chemical tempering warpage value,the SiO2 particle size in the coating solution had a linear relationship with the chemical tempering warpage value,and the difference between the predictive value and actual value were 0.59％to 0.63％.Keeping other conditions unchanged,increased the chain length of the alcohol solvent and prolonged the reaction time can increase the SiO2 particle size,while reduced the water consumption can decrease the SiO2 particle size.Therefore,by regulating the particle size of SiO2 in the coating solution,the warpage value of chemical tempered ultra-thin float glass can be effectively predicted and controlled.
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