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- What is the research progress of nano aerogel insulation felt at home and abroad?[2016/9/9]
- Nano aerogel materials have been found as early as 70 years ago, in 1931, the Pacific university of California kistlers using supercritical drying method to remove water from the hydrogel, obtained the first non-shrink nano aerogel insulation felt, but the early aerogel is very fragile, and very expensive, so it is mainly used in the laboratory. It was not until 10 years ago that NASA became interested in the material and made it more practical to use that it finally walked out of the lab.
In recent years, the development of thermal insulation materials abroad has been accelerated obviously. due to the development of the whole nano - technology, people pay more attention to the nano-thermal insulation materials. the research in the United States and Europe is very active, and Japan and Korea have also carried out more development. Aspen has studied the thermal insulation mechanism of nano aerogels earlier, especially the development and application of flexible nano aerogels thermal insulation felt. However, the u s nano aerogel insulation blanket is completely banned for China.
- What are the characteristics of nano aerogel insulation felt[2016/9/9]
- Nano aerogel thermal insulation felt is a kind of controllable structure of nano porous lightweight material, it has the characteristics of nano structure ( pores 1 ~ 100 nm, skeleton particles 1 ~ 20 nm ), large surface area ( up to 800 ~ 1000 m2 / g ), high porosity ( up to 80 % ~ 99.8 % ) and so on. The unique structural characteristics of nano aerogel insulation felt make aerogel have singular properties in thermal, electrical, acoustic, optical and other aspects. The thermal conductivity of the nano aerogel thermal insulation felt can reach below 0.013 w / ( m k ), which is far lower than the thermal conductivity of air at normal temperature of 0.025 w / ( m k ). the nano aerogel thermal insulation felt is one of the best thermal insulation properties of all solid materials, and has the advantages of low density, water resistance, flame retardance, green environmental protection, acid and alkali resistance, corrosion resistance, difficult aging and long service life, which are incomparable to other traditional materials. the nano aerogel thermal insulation felt has high added value, so the nano aerogel thermal insulation felt is called a super thermal insulation material, and has great application potential in many fields, such as building energy conservation, environmental protection, aerospace, oil pipelines, solar heat collection and furnaces
- Why are nano heat shields so popular ?[2016/8/31]
- The energy consumption of iron and steel production accounts for about 10 % of the total energy consumption in China. energy conservation in iron and steel industry will bring fundamental benefits to the cause of energy conservation and environmental protection in the whole society. Heat insulation material is an important component of steel production equipment, which has a great impact on equipment energy consumption. Nano thermal insulation board is considered as the best known thermal insulation effect of high temperature materials, has been gradually accepted and applied in steel-making equipment, greatly reduce the surface temperature of equipment, significantly reduce the heat loss of equipment, improve product quality, improve production efficiency, reduce the production cost of steel. The thermal insulation effect of the nano thermal insulation board is 2 - 10 times of that of the traditional thermal insulation material, and the nano thermal insulation board is a novel material which is developed based on the microporous thermal insulation principle and mainly comprises superfine silicon dioxide powder with the diameter of 7 - 20 nm, a mixed thermal radiation shielding material, high-strength superfine fiber, high-temperature shrinkage resistant material and the like, and is pressed by a special process.
The surface of the product is covered with glass fiber cloth, aluminum foil, plastic film, etc., and the common forms are flat plate type, felt type, roller shutter type, block type, etc. Flat type for flat wall or arc is not too big furnace wall, felt type can be used for steel ladle and other space has strict restrictions on equipment, roller shutter type is mainly used for piping system.
- Industrial furnace nano insulation board how to use?[2016/8/25]
- Industrial furnace steel plate surface generally have anchor nail, generally spread a layer of 25 mm ceramic fiber blanket, and then lay the nano heat insulation board, nano heat insulation board with fiber cloth, aluminum foil package, generally can be in the anchor nail position drilling, through the anchor nail close to the ceramic fiber blanket, pay attention to in the process of installation as far as possible don't make the nano heat insulation board crack, more or less affect the heat insulation performance, out of the powder as far as possible to fill back, in addition to need to cut, with high temperature tape paper wrapped tightly.
- What are the areas in which nano heat shields can be used ?[2016/8/24]
- Nano - thermal insulation board are the best high-temperature insulation materials, with plate-like and special - shaped. The product is widely used, including heating furnace, test furnace, black box, elevator fire door, electric ceramic furnace heating plate, ship, machinery, casting, metallurgy and other thermal equipment. But also can be apply to refrigeration equipment, and that cooling retention effect is quite obvious.
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