A Study of Thermophysical Properties of a Glass-Ceramic Material Modified with Low-Melting and Organic Additives for Thermal Insulation of Pipelines

被引：0
|
作者：
Apkaryan, A. S. [1 ]
Khomyakov, A. Y. [1 ]
机构：
[1] Russian Acad Sci, Inst Strength Phys & Mat Sci, Siberian Branch, Tomsk, Russia
来源：
RUSSIAN PHYSICS JOURNAL | 2023年 / 66卷 / 01期
关键词：
broken glass; wastes; foamed glass ceramics; charge; granular; density; thermal conductivity; temperature; water absorption; thermal insulation; pipe; pores; organic matter;
D O I：
10.1007/s11182-023-02919-y
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A granular insulating crystalline glass material based on broken glass, clay and organic additives and a technology for its manufacturing are proposed. The regularities of the effect of the composition and firing temperature on the properties of the granules are specified. The granular heat-insulating material is produced following characteristics: its bulk density is 260-280 kg/m(3), pellet strength - 1.74 MPa, thermal conductivity - 0.075 W/(m degrees C), and water absorption - 2.6 wt.%. The effect of the basic physical characteristics of the charge components on the pore formation process is studied. Using the research results, the basic parameters affecting the sustainability of the swelling glass are specified. A reasonable charge composition and a thermal and gas synthesis mode are chosen for the partial gas pressure to be lower than the surface tension of the melt. This enables the formation of granules with small closed pores and vitrified surfaces. The data obtained could be applied in heat insulation of the main pipelines with foamed glass ceramics.
引用
收藏
页码：124 / 130
页数：7
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