General information about the foam glass In the category Home Insulation Many people are interested in knowledge and learning about many subjects, this knowledge may be vital at some point in your life, attention enough, and dive into more detail more articles and learn more information about General information about the foam glass.
General information about the foam glass
Foam glass ( cellular glass , foam glass) – this is a highly porous inorganic insulation cellular material obtained by sintering finely ground glass and a blowing agent , reminiscent in structure to a solid lather .
The cells are spherical or hexagonal shape , their size can range from fractions of a millimeter to centimeter. Material color from light cream to black, usually greenish- gray . Depending on the glass composition and impurities , foam glass can take almost any color.
When the average cell diameter 2 mm thickness of the cell walls varies in the range from 20 to 100 microns. The porosity of different kinds of foam glass ranges from 80 to 95 %.
The raw materials used in the manufacture of foamed glass molten glass , which can be welded from the following starting materials : quartz sand , limestone, soda and sodium sulphate .
You can also use waste glass production – Glass fight, so the issue is solved in parallel recycling of glass and broken glass .
As the blowing agent used ( % by weight of glass )
• Anthracite – 1.5 … 2% ;
• coke – 2 … 3 % ;
• semi- peat ;
• limestone or marble chips – 1 … 1.5 % ;
• lamp black – 0.2 … 0.5 % ;
• dolomite .
Low decomposition gasifier should be 50-70 ° C above the softening temperature of the glass powder.