本文模拟全氧燃烧气氛和空气气氛,熔制了含水量不同的玻璃样品.利用FTIR红外光谱测试了玻璃中的羟基含量;利用热膨胀仪、硬度仪和化学法测试了玻璃的线热膨胀系数、维氏显微硬度及玻璃的化学稳定性;利用固体核磁仪对玻璃微观结构进行测试.研究结果表明:全氧燃烧环境下,玻璃熔体中羟基(-OH)含量增多,玻璃的线膨胀系数增加,显微硬度和化学稳定性下降.29Si MAS-NMR结果显示高含水玻璃网络结构中Q(4)比例减少,Q(3)和Q(2)比例升高.为了减缓玻璃中水分对性能的影响,模拟实验发现使用低含水量碎玻璃可以有效降低玻璃成品中的含水量,使用比例以35％为宜.
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