Glass foam

Foam glass is the porous ceramic of the glass world. 

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Use special insulation materials such as foam glass or crimped aluminum sheeting... 

Calcium silicate Foam glass Mineral wool... 

Mineral Wool Calcimn Silicate Foam Glass ... 

Specialty Glass Products. Foam glass insulation and glass building blocks are two specialty glass products with construction applications. 

Foam glass was invented in 1942 and is a closed cell glass material blown with hydrogen sulfide gas. It is used in industrial and roof insulation applications where its extremely low moisture permeability is valuable. 

The materials studied in63 65) can be regarded as binary or three-phase syntactic foams because they contain two types of filler, namely macrospheres and microspheres in 63), and macrospheres and glass fiber in 65). The latter may be called reinforced syntactic foams and have also been referred to as foamed glass-reinforced spheroplasts66 671 (see Sect. 4.11). 

Novolac and resol cold hardening oligomers habe been used 19-75-99). In the case of resol foams the process technology is not different from that used for epoxy foams. Glass, phenolic resins, carbon, polystyrene, polyacrylonitrile and poly(vinylidene chloride) microspheres have been used as fillers ... 

Kreidl (6) discusses foam glasses and how they may be prepared. 

Foam glass Mineral wool Fibreglass Calcium silicate... 

The sorption capacity of foamed glass products ranges from 6.7 for ketones such as methyl isobutyl ketone to 15.2 for nitric acid. Therefore the sorption capacity of foamed glass is very good, and the foamed glass is one of the best materials for spiU remediation. It is also available in several forms besides a particulate, such as pillows, dikes, and booms. However, this material is more expensive, approximately 3.00/lb for the particulate form and 3.20-4.40/lb for pillows, depending upon supplier and quantity ordered. 

We designate as composite (combined) such systems as are formed by combination of growth and addition systems. As a rule, such systems are produced both by the addition of individual elements and through growth of the individual elements (e.g. pore formation or foaming). Composite systems are, for exemple, ceramics, foam glass, fabrics, Gouch filters, membrane filters, most construction materials, metallic or polymeric cakes, etc. 

Installed alone as a semi-refractory material, the foamed borosilicate glass block lining withstands hot face temperatures up to 960°F. It may also be used with refractory, chemical-resistant masonry or monolithic internal linings at temperatures above 960°F providing a unique combination of corrosion protection and heat conservation with little added weight and a lesser overall lining thickness. The foamed glass block may also be fabricated into nozzles, T-sec-tions, elbows, liner inserts and other custom shapes. 

In process vessels, the foamed glass block can be substituted for several courses of acid brick. A brick facing over the block serves both to protect the block against abrasion from mechanical abuse and to lower the temperature at the face of the block when operating temperatures exceed the limits of the block. In both cases, the block installed over a membrane and beneath brick re-... 

A design which incorporates the foamed glass block behind the blanket eliminates this problem. The block prevents the acids from reaching and condensing on the steel and adds insulating power of its own to the lining. 

Foamed glass block laid in its silica-based mortar over a suitable membrane is a good choice for lining these areas. During shutdowns, it is resistant to the wide range of acid that may condense on the surfaces of the ductwork. When the incinerator is operating, the block can withstand the high gas temperatures... 

The capabilities of the foamed glass block provide (1) chemical protection against acid condensates, (2) lower outer shell temperature that eliminates the need for external insulation, (3) little added weight which saves on structural support, and (4) a quick and relatively inexpensive installation and easy repairs. 

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