Abstract The process of foaming glass is very dependent on the chemical composition of the glass. In this study we used a foaming-agent/oxidizing-agent couple and a crystallization inhibitor to foam cullets of flat, container and CRT-panel glass. Foamed glass with a density of 110–120 kg m –3 , a thermal conductivity of 50–52 mW m –1 K –1 and a homogeneous pore structure was obtained from a mixture of panel glass, 0.33 wt% carbon and 4.45 wt% Fe 2 O 3 . We also showed that it is possible to fabricate foamed glass with the same density or pore structure as mentioned above by adding up to 50 wt% container cullet or 70 wt% flat glass to the mixture. In the foamed samples with a low content of panel glass, crystals form, resulting in an increased open porosity, density and inhomogeneous pore structure. The crystallization can, however, be inhibited by adding calcium phosphate, so enabling the preparation of high-quality foamed glass from flat glass or flat/container-glass mixture. The pore gas is predominantly CO 2 and the pressure inside the pores is 0.36–0.47 bar. The reduced effect of the composition on the foaming process suggests that there is a great potential for stabilizing the production of foamed glass and ensuring the product's quality.

中文翻译：

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抑制碎玻璃成分对泡沫玻璃的形成和性能的影响

摘要 玻璃发泡工艺很大程度上取决于玻璃的化学成分。在这项研究中，我们使用发泡剂/氧化剂对和结晶抑制剂来发泡平板玻璃、容器玻璃和 CRT 面板玻璃的碎玻璃。密度为 110–120 kg m –3 、热导率为 50–52 mW m –1 K –1 且具有均匀孔结构的泡沫玻璃是从面板玻璃、0.33 wt% 碳和 4.45 wt% 的混合物中获得的Fe 2 O 3 。我们还表明，通过向混合物中添加高达 50 wt% 的容器碎玻璃或 70 wt% 的平板玻璃，可以制造具有与上述相同密度或孔结构的泡沫玻璃。在面板玻璃含量低的泡沫样品中，会形成晶体，导致开孔率、密度和孔结构不均匀。然而，结晶可以，加入磷酸钙可以抑制，从而可以从平板玻璃或平板/容器玻璃混合物制备高质量的泡沫玻璃。孔隙气体主要是 CO 2，孔隙内的压力为 0.36–0.47 bar。该组合物对发泡过程的影响降低表明，在稳定泡沫玻璃的生产和确保产品质量方面存在巨大潜力。