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The effects of lithia and alumina on the viscosity and strength of commercial fibreglass and other glass compositions

机译：锂和氧化铝对商用玻璃纤维和其他玻璃组合物的粘度和强度的影响

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摘要

This paper reviews the published fibreglass and glass literature, and analyses it for the effects of Li_2O and Al_2O_3. An addition of Li_2O or a reduction of Al_2O_3 was found to both reduce the viscosity and strength of fibreglass and glass compositions. Adding 1 wt% Li_2O reduces the forming temperature (at eta = 10~3 dPs) on average by 35°C. Reducing Al_2O_3 by 2 wt% reduces it by the same amount and would be far less costly. Adding Al_2O_3 to fibreglass compositions increases the tensile strength. The literature in the published domain offers only limited inputs about the effect of Al_2O_3 on the fracture strength of glasses. In future commercial use, increasing Al_2O_3 would yield stronger E-glass fibres and perhaps also stronger container and aircraft glass variants. Reducing Al_2O_3 in commercial E-glass melts to a level below the limits of the ASTM specifications would save energy, and reducing it in S-glass melts offers lower melting product variants to replace platinum lined with refractory lined furnaces.
机译：本文回顾了已发表的玻璃纤维和玻璃文献，并分析了其对Li_2O和Al_2O_3的影响。发现添加Li_2O或减少Al_2O_3可同时降低玻璃纤维和玻璃组合物的粘度和强度。添加1 wt％的Li_2O平均可降低35°C的成型温度（在eta = 10〜3 dPs时）。将Al_2O_3减少2 wt％可以将其减少相同的数量，并且成本要低得多。向玻璃纤维组合物中添加Al_2O_3可提高拉伸强度。在公开领域中的文献仅提供了关于Al_2O_3对玻璃的断裂强度的影响的有限输入。在将来的商业用途中，增加Al_2O_3将产生更坚固的电子玻璃纤维，也许还会得到更坚固的集装箱和飞机玻璃变体。将商用电子玻璃熔体中的Al_2O_3降低到低于ASTM规范的水平将节省能源，而减少S-玻璃熔体中的Al_2O_3可提供较低熔点的产品变体，以代替耐火炉衬炉中的铂。

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