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The effects of 1 wt percent P_2O_5 addition on the properties of container Glass

机译：1 wt％P_2O_5添加对容器玻璃性能的影响

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摘要

The effects of replacing 1 wl percent SiO_2 by P_2O_5 in a typical container glass composition have been investigated. High temperature viscosity, liquidus temperature, chemical durability, thermal expansion coefficient, dilatometric softening point, glass transition temperature and density were measured to assess more fully the potential technological benefits of using small P_2O_5 additions in soda-lime-silica glass manufacture. High temperature viscosity measurements showed that viscosity is unaffected by the replacement of 1 percent SiO_2 by P_2O_5 in these glasses. On this basis it is suggested that the predictive mathematical factor for the, effect of low levels of P_2O_5 on glass viscosity in soda-lime-silica glasses is equal to the factor for SiO_2. The liquidus temperature was reduced by 15 deg C upon replacement of 1 percent SiO_2 by P_2O_5, indicating that the glass stability is improved. This was commensurate with results from other studies using similar levels of P_2O_5 addition in similar glass systems. Chemical durability was improved slightly by the introduction of P_2O_5 whilst the thermal expansion coefficient was unaffected. Small changes in glass transition temperature, dilatometric softening point and density were also observed. The use of low levels of P_2O_5 in the manufacture of container glass could prove highly beneficial Its desirable effects on liquidus temperature and chemical durability may allow levels of components such as CaO to be increased whilst retaining the properties required of container glass. These changes could lead to environmental benefit through reductions in melting temperature.
机译：研究了在典型的容器玻璃组合物中用P_2O_5替代1 wl％SiO_2的效果。测量了高温粘度，液相线温度，化学耐久性，热膨胀系数，膨胀软化点，玻璃化转变温度和密度，以更全面地评估在钠钙硅玻璃生产中使用少量P_2O_5添加物的潜在技术优势。高温粘度测量表明，在这些玻璃中，粘度不受P_2O_5代替1％SiO_2的影响。在此基础上，建议了钠钙硅玻璃中低P_2O_5对玻璃粘度影响的预测数学因子等于SiO_2的因子。当用P_2O_5代替1％的SiO_2时，液相线温度降低了15摄氏度，这表明玻璃的稳定性得到了改善。这与其他研究在相似的玻璃系统中使用相似的P_2O_5添加量的结果相称。通过引入P_2O_5可以稍微提高化学耐久性，而热膨胀系数不受影响。还观察到玻璃化转变温度，膨胀软化点和密度的微小变化。在容器玻璃的制造中使用低含量的P_2O_5可能会证明是非常有益的。它对液相线温度和化学耐久性的理想影响可以使诸如CaO之类的组分含量增加，同时保持容器玻璃所需的性能。这些变化可能会通过降低熔化温度而带来环境效益。

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