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What's the fire resistance of the ceramic fiber?
The most important index of porcelain refractory fiber is the diameter and thermal stability of the fiber. Al2O3SiO2 fiber is commonly used in ceramic industry. It is divided into different application range according to the content of Al2O3, and Cr2O3 material is introduced into it to improve its refractory and oxidation resistance. Generally high alumina content, iron oxide and other impurities of low fiber products are pure white, the introduction of chromium oxide fiber is sold with milk yellow tone color. The average diameter of the ceramic fiber is 24 microns. High fiber, small density, low thermal conductivity, high temperature. If the fiber is coarse and dense, the use is not satisfactory. The thermal stability index of fiber is more important. Al2O3-SiO2 fiber products range between 1260 and 3588% in line shrinkage. The amount of shrinkage is also directly related to thermal stability.
Why is there no direct relationship between thermal conductivity and conductivity of ceramics?
The concept of electrical conductivity in physics, in which the product of the quantity and the electric field intensity is equal to the conduction current density. For isotropic media, conductivity is scalar; for anisotropic media, conductivity is tensor. In ecology, conductivity is the ability to conduct current by means of a numerically expressed solution. The unit is expressed in SIEMENS per meter (S/m). The conductivity is simply the product of the measured conductivity (G) and the conductance cell constant (L/A). Here the L is the length of the liquid column between two plates and the A is the area of the plate. P l=l/ = sigma (1) definition or explanation for the reciprocal of resistivity conductivity. Sigma Rho =1/ (2): units in the international system of units, the conductivity of the unit is SIEMENS / m. (3) the physical meaning of conductivity is to indicate the conductivity of a substance.
Are ceramic fiber paper permeable?
However, in the case of water can not play a good insulation effect, but the use of ceramic fiber paper temperature is about 1000 degrees, there will be no water, Ji'nan Sheng Yang ceramic fiber manufacturers
The condition of ceramic glass fiber at high temperature
Generally, glass fibers can be pulled long and cut short when required. However, ceramics are difficult to control and difficult to grow because of technological conditions;
Where is the best packing area for ceramic fibers?
Compared with asbestos textiles, ceramic fiber textiles have the following advantages:1) the continuous use temperature can reach 1000 DEG C, and the service temperature can reach 1260 DEG C for a short time.2) has good acid and alkali corrosion resistance and aluminum, zinc and other molten metal melting ability.3) good high temperature strength and heat insulation performance (refer to physical and chemical indexes).4) ceramic fiber cloth, band, packing and other products with non alkali glass fiber yarn as strengthening material have higher insulation and high temperature electrical insulation than glass fiber.5) non-toxic, harmless and odorless.
Which is the best insulation effect of ceramic fiber paper and XPE insulation film?
I used to work in the ceramic fiber factory for two years, and the main contact was fiber. There is not much contact with paper products and so is the understanding of fiber paper.The use of heat insulation material can not be considered temperature, as well as environmental, economic, atmosphere and many other factors to consider.
What's the function of refractory ceramic fiber band?
Ceramic fiber belt main uses: industrial heat insulation, pipe and cable insulation coating, exhaust pipe insulation coating, flange connection, heat radiation shielding, high temperature furnace door curtain, etc..
What is ceramic fiber paper? What is ceramic fiber paper for?
Ceramic fiber paper, with its superior product characteristics, has gained high status in the field of industrial high temperature insulation. It is generally used as insulation, heat preservation, sealing, electrical insulation, sound-absorbing and filtering materials. The utility model can be used not only as the inner wall of the lining, but also as the sealing material of the heat insulation material and the high temperature appliance, and can be used as the good heat insulation and cold protection material of the refrigeration equipment of the refrigerator.Ceramic fiber paper is widely used in various industrial furnace and ladle, ladle, submerged nozzle for high temperature heat insulation material; and industrial electric motor insulation and thermal insulation materials, sealing materials door and furnace expansion joints, in some high temperature instruments, equipment can also be used as insulation material; at the same time in the glass ceramics and heat melt glass film removing glass used as demoulding. Ceramic fiber paper has good sound insulation, noise reduction and noise reduction performance, so it can be used for silencer, insulation and insulation material of automobile exhaust pipe. Dragon Fire energy saving.