Mineral fiber insulating materials

Important properties of mineral fiber insulating materials ... 

The mineral fiber insulating materials dealt with in this chapter, are generally amorphous and consist mainly of Si02 and AI2O3 with different contents of metal oxides. The most important properties of mineral fiber insulating materials are their thermal conductivity (in the range of 0.03 to 0.04 W/mK), their low bulk densities (between 10 and 200 kg/m ), their porosity, their elasticity, their temperature stability and their flammability. 

Potassium caseinate Propylene carbonate Stearamide MEA Sucrose distearate binder additive, phenolic resin abrasives N-(n-Butyl)-3-aminopropyltrimethoxysilane binder additive, phenolic resin mineral fiber insulating materials... 

Mineral fibers for the production of insulating materials are named after their. starting materials as glass or rock fibers and as refractory ceramic fibers. The names mineral, glass or rock wool are usually used, since they, in contrast to textile glass fibers, are produced as short, randomly oriented fibers. The end products are therefore known as mineral wool insulation materials. 

Container Insulation Tanks containing materials above atmospheric temperature may require insulation to reduce loss of heat. Almost any of the commonly used insulating materials can be employed. Calcium silicate, glass fiber, mineral wool, cellular glass, and plastic foams are among those used. Tanks exposed to weather must have jackets or protective coatings, usually asphalt, to keep water out of the insulation. 

Some commonly used insulating materials are calcium silicate, mineral slagwool, glass fiber, cellular glass, and polyurethane. 

Several amphiboles are fibrous and fibers from them can be processed to give heat-insulating materials. Among these are tremolite and crocidolite. These minerals are also used as fibers in composites. 

It is a fibrous noncombustible mineral and is used in the manufacture of many fireproof and insulating materials. Because of the cancer-causing characteristics of its fibers, government regulations have sharply reduced its use. 

An insulation system is to be selected for a furnace wall at 1000°C using first a layer of mineral wool blocks followed by fiber-glass boards. The outside of the insulation is exposed to an environment with h = 15 W/m2 °C and = 40°C. Using the data of Table 2-1 calculate the thickness of each insulating material... 

Construction materials such as cement, concrete, aggregate, mineral and glass fiber insulation, and gypsum wallboard. 

However, when such insulation mats are exposed to moisture, the bonding strength is reduced, which can affect the quality of the insulation material. To prevent this problem, on the one hand, a hydrophobic agent is added to make the mineral wool more water repellent, and on the other hand silane is included in the binder mixture to enhance the bond between the inorganic fibers and the organic binder. 

Thermal insulators comprise an equally broad range of materials. Such inorganics as mineral fibers, magnesia, aluminum silicate, cellulose, and glass fibers are widely used for steam and hot-water pipes, furnaces, and blown-in home insulation. Organic products that are effective include plastic foams (polyurethane, polyvinyl chloride, polystyrene) and cellular rubber. There are a number of materials that may be called double insulators, since they have both electrical and thermal insulating properties,... 

Quartz filaments have assumed a role as high-temperature resistant fibers, and are produced in considerable quantities for high temperature and corrosion-resistant applications. They are widely used as filtration and insulation materials at temperatures above those of mineral silicate fibers. Quartz and silica fiber RPs are used in jet aircrafts, rocket nozzles, nose cones, and reentry heat shields for spacecraft. 

Mullite is a catenarian silicate mineral (Al Si2 O5 5 0 5 belonging to the rhombic system and is an excellent refractory material. The biggest advantage of mullite as a metal reinforced material is its chemical inertness. Mullite whiskers can be used as ultra high-temperature thermal insulation material and are used in industrial high-temperature furnaces and reinforcing material of fiber-reinforced metal. The industrial production of mullite whiskers is concentrated mainly in Japan... 

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