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          Nano Aerogel Insulation Felt is known as[2016-10-23]
          Nano aerogel insulation felt as a new type of thermal insulation products have been unknowingly into various industries. When mentioned nano aerogel insulation felt, we can understand the nano aerogel insulation felt and aerogel has inevitable connection through this name. Yes, its main material is si02 aerogel, in aerogel, and si02 aerogel as the main research object, si02 aerogel has the advantages of low volume density, low thermal conductivity, etc., currently in the field of energy-saving buildings, steel, aerospace and petrochemical industry, known as " magic material".
          Comparison of thermal insulation effect of nano aerogel thermal insulation felt and other thermal insulation materials in petroleum pipeline[2016-10-19]
          According to the specific operation conditions of the pipeline and the temperature record data in summer in the area, the site conditions are set as 813 mm outside diameter, 16 mm wall thickness, oil temperature of - 10 ℃, ambient temperature of 35 ℃ ( the highest temperature in summer in the area for nearly two years ). The length of the pipeline is 1 m for calculation, and the wind speed of the outer wall of the pipeline is 2 m / S. According to the common insulation materials of pipeline, three insulation schemes are given. scheme 1 uses 10 mm nano aerogel insulation felt to coat the pipeline. In scheme 2, 25 mm insulation rubber and plastic is adopted to coat the pipeline; In scheme 3, 17 mm polyurethane foam insulation material was used to coat the pipeline, and the thickness of 25 mm and 17 mm were recommended values of insulation rubber and polyurethane foam insulation material under the temperature difference. the three schemes were combined with bare pipe to form four working conditions, and the insulation performance was compared and analyzed.
          The nano aerogel thermal insulation felt has good thermal insulation performance, superhydrophobic property, long service life, compression resistance and easy installation and maintenance[2016-10-19]
          Nano aerogel thermal insulation felt is a new type of thermal insulation material, which is mainly made of nano aerogel. This material is a kind of nano porous solid material with network structure, which is composed of colloidal particles or polymer molecules accumulated together. the pore size in this material is in the order of nanometers. The porosity of that material is as high as 80 % - 99.8 %, the typical size of the hole is 1 - 100 nm, the density can be as low as 3 kg / m3, the thermal conductivity at room temperature can be as low as 0.012 w / ( m k ), the thermal insulation performance is good, and the material has the characteristic of superhydrophobic property, long service life, compression resistance, easy installation and maintenance and the like.
          Why not many manufacturers of nano aerogel insulation felt on the market?[2016-10-4]
          The nano aerogel thermal insulation felt is refer to as aerogel felt for short,which is a flexible thermal insulation felt which takes nano silica aerogel as a main material and is compounded with glass fiber cotton or preoxidized fiber felt through a special process. Nano aerogel insulation felt is the lowest thermal conductivity solid insulation material in the temperature region of about 400 ℃ at present ( the thermal conductivity in the high temperature region of 400 - 1000 ℃ is much higher than the micro-nano insulation series ), which has the characteristics of softness, easy cutting, small density, inorganic fire prevention, overall hydrophobic, green environmental protection and the like, and can replace the traditional flexible insulation materials such as glass fiber products, asbestos insulation felt, silicate fiber products and the like which are not environment-friendly and have poor thermal insulation performance. The nano aerogel insulation felts sold on the market are blocky, of course, can be made into any desired shape according to the needs of customers. Although the nano aerogel thermal insulation felt is not added much aerogel, but does not affect its use effect, although the thermal insulation effect of nano aerogel thermal insulation felt is very good, but it is not popular in the market, the reason is not popular still need to start with nano silica aerogel, this paper first introduce the preparation process of nano silica aerogel.
          Characteristics and preparation process of nano aerogel insulation felt[2016-10-4]
          With the increasing shortage of energy and rising energy prices, energy conservation and consumption reduction is imperative. The traditional thermal insulation materials can not meet the increasing heat insulation requirements. in 2006, nano aerogel thermal insulation felt was developed in China, which can effectively limit the heat convection in the gas phase. In addition, its solid phase thermal conductivity is very small because its solid phase part is also a network structure formed by nanoscale SiO _ 2 wall shell. Therefore, the structure of the material determines its super thermal insulation performance, especially at high temperature, such as the average temperature of 500 degrees, aluminum silicate fiber thermal conductivity of 0.153 w / m k, and nano aerogel thermal insulation felt thermal conductivity of only 0.05 w / m K.
          Can nano heat shields be used on ships and vessels and how?[2016-10-4]
          The appearance of nano thermal insulation panels has attracted the attention of military industry and other high-tech fields. Nasa, for example, has used the material for thermal insulation in space applications. In the past, organic foam materials and inorganic mineral fiber products were the main application of marine thermal insulation materials, but these materials had some defects such as flammability, temperature resistance and toxicity of organic foam, which inhibited its application. But the traditional inorganic mineral wool product has poor heat insulation performance, so its heat insulation efficiency is low. So the u s naval research laboratory has been doing research to improve the thermal insulation materials for ships. The results show that min - k light shielding material ( a brand of nano heat insulation board ), organic poly ( aryl oxy - phosphazene ) foam and polyimide foam are the most promising heat insulation materials for ships, among which the performance of min - k material is the best. At present, in foreign shipping industry, nano heat insulation board is mainly used in naval ships and other high-grade ships.
          The application effect of the nano heat insulation board on the industrial furnace is remarkable, and the universality is strong[2016-9-23]
          At present, China has a total of about 120,000 industrial furnaces, the annual total energy consumption of 250 million tons of standard coal, accounting for about a quarter of the total energy consumption of the country, accounting for 60 % of the total energy consumption of industry. Therefore, the energy conservation of industrial furnaces has great potential. The energy-saving technology of heat insulation materials developed rapidly in recent ten years has attracted much attention because of its remarkable energy-saving benefits and attractive development prospect. The data of many countries show that the new high-efficiency heat insulation materials can save 15 % ~ 30 % energy in industrial furnaces instead of the traditional heat insulation refractory bricks. For the heat storage and heat dissipation of industrial furnace lining, generally accounts for 20 % ~ 45 % of the total energy consumption of the furnace. the selection of high quality, energy-saving refractory material can reduce the heat storage and heat dissipation loss of the furnace body, improve the thermal efficiency, so as to achieve the purpose of energy saving.
          What is the effect of using nano thermal insulation panels in steel mills?[2016-9-18]
          Through the application of nano thermal insulation board to the converter of Angang No.4 steel-making plant; ( 1 ) The nano heat insulation plate doe not appear pulverization phenomenon and the converter shell is not deform after being used at a high temperature, and the temperature of the furnace shell is reduce by more than 11 deg c compared with that of the polycrystalline fiberboard, so that the safety of the lining is improved, the heat loss of the converter is reduced, the smelting time is reduced, the labor intensity is reduced, the maintenance cost is saved, and the heat efficiency of the converter is improved, and the nano heat insulation plate has important significance for steelmaking production. ( 2 ) Each converter can save more than 50 t of molten iron and save more than 100,000 yuan of cost all the year round; Due to the expansion of converter capacity ratio, each steel loading increased 4 t, the annual output of each converter can increase 47.52 million t, increase the output value of 95.04 million yuan, has obvious economic benefits.
          What are the characteristics of nano aerogel insulation felt? How?[2016-9-13]
          1.1Thermal conductivity of nanometer aerogel insulation felt Aerogel is a kind of nano-pore network structure formed by the mutual aggregation of colloidal particles or polymer molecules. the common nano-aerogel insulation felt is a highly dispersed solid material composed of SiO _ 2 Network skeleton and gas filled in nano - pores. Has more than 80 percent of porosity, and the pore diameters of the nano aerogel thermal insulation felts are mesopores between 2 and 50 nm formed by interconnecting nano network frameworks, the density is only 30 to 100 kg / m3, and the thermal conductivity of the nano aerogel thermal insulation felts is only 0102 w / ( m k ) at normal temperature. Therefore, nano aerogel insulation felt is a typical lightweight and excellent thermal insulation material. 1.2 Transmission characteristics of aerogel insulation felt At high temperature, the thermal radiation energy of infrared ray with wavelength less than 8μm will almost pass through aerogel, which leads to the sharp rise of thermal conductivity of nano aerogel insulation felt. in order to reduce the thermal conductivity of radiation, it is necessary to compound the opacifier which can absorb or scatter infrared light in nano aerogel insulation felt. common infrared opacifiers are carbon black, TiO _ 2 and so on.
          Application example of nano aerogel insulation felt[2016-9-13]
          Nano - aerogel insulation felt is the best choice for equipment that requires insulation while also requiring small volume and light weight. Such as steel ladles, torpedo cans, tundish and the like in the metallurgical industry, the expansion increment of the equipment can be realized by utilizing the nano aerogel thermal insulation felt on the premise of not changing the steel structure, and meanwhile, good thermal insulation effect can be achieved. Nano aerogel insulation blanket was used to replace the traditional insulation board on a 100 ton ladle in a steel plant
          The total number of records:15 | Number of pages:2 1 2    
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