Influence of additives on the crystallization and thermal conductivity of container glass cullet for foamed glass preparation

被引：20
|
作者：
Smiljanic, Sonja [1 ]
Hribar, Uros [1 ,2 ]
Spreitzer, Matjaz [1 ]
Konig, Jakob [1 ]
机构：
[1] Jozef Stefan Inst, Adv Mat Dept, Jamova Cesta 39, Ljubljana 1000, Slovenia
[2] Jozef Stefan Int Postgrad Sch, Jamova Cesta 39, Ljubljana 1000, Slovenia
来源：
CERAMICS INTERNATIONAL | 2021年 / 47卷 / 23期
关键词：
Glass crystallization; Foam glass; Waste glass; BOROSILICATE GLASS; FLY-ASH; DEVITRIFICATION; NUCLEATION; KINETICS; DISILICATE; ALUMINA;
D O I：
10.1016/j.ceramint.2021.08.183
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Foamed glass preparation is a complex combination of reactions, greatly influenced by the composition of the used glass and often hindered by simultaneous crystallization. The crystallization phenomenon is undesirable in foamed glass production since it decreases the quality of the final product. In this work the influence of different types of additives (foaming agents, flux agents, crystallization inhibitors and nucleating agent) on the crystallization of waste container glass and properties of the sintered samples (density and thermal conductivity) was studied. Results of our study confirmed partial crystallization during sintering stage. We found that waste container glass manifests complex crystallization with the formation of four main crystalline phases, which can be inhibited with the addition of fluxing agents (B2O3 and borax). Moreover, here we show that prevention of the crystallization can lead to a significant decrease of the thermal conductivity.
引用
收藏
页码：32867 / 32873
页数：7
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