澄清剂对超白浮法玻璃可见光透过率的影响

探究高温分解型澄清剂Na₂SO₄+C(炭粉)和氧化还原型澄清剂CeO₂+NaNO₃对超白浮法平板玻璃可见光透过率的影响。结果表明,随着Na₂SO₄和C量的增加,超白玻璃的可见光透过率随之增加,从91.30%提升至91.87%。而氧化还原型澄清剂中的CeO₂质量分数小于0.07%时,超白玻璃的可见光透过率并没有实质性增加;CeO₂质量分数超过0.07%时,增长趋势明显。相对于高温分解型澄清剂Na₂SO₄+C,氧化还原型澄清剂CeO₂+NaNO₃具有更显著的氧化性,有助于Fe²⁺/Fe_总减少,但是Ce⁴⁺的自身着色和紫外截止效应影响了可见光透过率,建议使用量的质量分数不超过0.07%。

Effect of Refining Agent on Visible Light Transmittance of Ultra-clear Float Glass

The influences of refining agent Na₂SO₄+C and CeO₂+NaNO₃ on visible light transmittance of ultra-white flat glass are investigated.Results show that the visible light transmittance of glass enhanced from 91.30%to 91.87%with the increment of pyrolysis refining agent Na₂SO₄+C.But for the oxidoreduction refining agent CeO₂+NaNO₃,visible transmittance of glass remained unchanged when the mass fraction of CeO₂ was less than 0.07%and increased obviously when the amount of CeO₂ exceed 0.07%.Although the visible transmittance of ultra-white glass decreased due to the coloring ion Ce⁴⁺ and ultraviolet cut-off effect,no more than 0.07%is recommended.In face,the higher oxidizability of CeO₂+NaNO₃ rather than Na₂SO₄+C is helpful for reducing the value of Fe²⁺/Fe Total.