Influences of Raw Material Types on Reaction of OLED Substrate Glass Batch During Heating Process

doi:10.16552/j.cnki.issn1001-1625.2025.0644

Abstract

Abstract:

OLED substrate glass batches exhibit a relatively high melting temperature. Rational selection of raw material types can significantly enhance the melting rate， reduce production energy consumption， and improve glass melting quality. This study investigated the influence of introducing different source materials for different quartz sand from different origins， aluminum raw material， and magnesium raw material on the batch behavior during heating. The results demonstrate that under identical conditions： when using quartz sand from three different origins （denoted as B sand， Q sand， and F sand）， the batch utilizing B sand shows 0.97% and 3.52% reduction in energy consumption compared to batches using Q sand and F sand， respectively. However， the F sand batch exhibits the fastest melting rate. The energy consumption of batches using Al₂O₃ is 13.77% lower than that of batches using Al（OH）₃， yet the decomposition process of Al（OH）? promotes the melting process. The energy consumption of batches materials using MgO is 7.36% lower than that of batches using MgCO₃. The research findings provide a reference for industrial production of OLED substrate glass in raw material selection. When using sand B sand， Al（OH）?， and MgO as raw material sources， the produced OLED substrate glass exhibits advantages of a higher melting rate and lower energy consumption.

Key words: OLED, substrate glass, glass batch, raw material type, heating process

CLC Number:

TQ171.62

TIAN Yingliang, WANG Zhongyu, LI Zhifeng, ZHAO Zhiyong. Influences of Raw Material Types on Reaction of OLED Substrate Glass Batch During Heating Process[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(1): 264-274.

Figures/Tables 18

Table 1 Chemical composition of OLED substrate glass

Chemical composition	SiO₂	Al₂O₃	B₂O₃	SrO	CaO	MgO	SnO₂	Total
Mass fraction/%	67.3	13.0	1.5	5.4	7.2	5.4	0.2	100.0

Fig.1 Heating temperature regime of batch

Fig.2 XRD patterns of three types of quartz sand

Table 2 Particle size distribution of three types of quartz sand

Raw material	D₁₀/μm	D₅₀/μm	D₉₀/μm
B sand	37.93	64.06	118.69
Q sand	41.92	69.25	124.46
F sand	25.54	55.57	108.64

Fig.3 Particle size distribution of three types of quartz sand

Fig.4 Microscopic morphologies of three types of quartz sand

Fig.5 XRD patterns of various quartz sand batches during heating process

Fig.6 DSC/TG analysis of various quartz sand batches during heating process

Fig.7 Energy consumption calculation for various quartz sand batches during heating process

Table 3 Morphological changes of various quartz sand batches during heating process

Temperature/℃	900	1 100	1 300	1 350	1 400	1 450	1 650
B sand
Q sand
F sand

Fig.8 XRD patterns of batches containing different aluminum raw materials during heating process

Fig.9 DSC/TG analysis of batches containing different aluminum raw materials during heating process

Fig.10 Energy consumption calculation of batches containing different aluminum raw materials during heating process

Table 4 Morphological changes of batches containing different aluminum raw materials during heating process

Temperature/℃	900	1 100	1 300	1 350	1 400	1 450	1 650
Al₂O₃
Al（OH）₃

Fig.11 XRD patterns of batches containing different magnesium raw materials during heating process

Fig.12 DSC/TG analysis of batches containing different magnesium raw materials during heating process

Fig.13 Energy consumption calculation of batches containing different magnesium raw materials during heating process

Table 5 Morphological changes of batches containing different magnesium raw materials during heating process

Temperature/℃	1 100	1 300	1 350	1 400	1 450	1 650
MgO
MgCO₃

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