The advantage of refractory fiber products is that the heat insulation performance at low temperature is very good, while the disadvantage is that the heat insulation performance at high temperature becomes worse.
Refractory fiber insulation is a collection of fibers with large gaps between the fibers.
At low temperature, conduction is the main heat conduction mechanism.
At high temperature, radiation is the main heat conduction mechanism, and the connected porosity in refractory fiber becomes the main heat transfer channel.
As the radiation is directly proportional to the fourth order of the absolute temperature, the heat insulation capacity of refractory fiber products decreases sharply with the increase of temperature.
At medium temperature, glass refractory fiber is thermodynamic unstable material.
With the crystallization of glass, the glass fibers will be pulverized.
The thermodynamic stability of the crystallized refractory fiber is better than that of glass fiber. However, under the action of high temperature, the crystallized fiber will be sintered and gradually pulverized.
When powdered fiber is inhaled into the lungs, it can affect people's health.
European Union countries have listed refractory fibers as the second leading cause of cancer.
Some refractory insulation products used in heating furnaces have begun to change, such as microporous insulating bricks and sealing materials on the top of kilns, which are not only of low density, but also do not produce too much pulverized materials in the construction process, which is harmless to human body and pollution-free to the environment.
See: luoyang Aust energy-saving technology co., LTD. epsac.cn
Refractory fiber insulation is a collection of fibers with large gaps between the fibers.
At low temperature, conduction is the main heat conduction mechanism.
At high temperature, radiation is the main heat conduction mechanism, and the connected porosity in refractory fiber becomes the main heat transfer channel.
As the radiation is directly proportional to the fourth order of the absolute temperature, the heat insulation capacity of refractory fiber products decreases sharply with the increase of temperature.
At medium temperature, glass refractory fiber is thermodynamic unstable material.
With the crystallization of glass, the glass fibers will be pulverized.
The thermodynamic stability of the crystallized refractory fiber is better than that of glass fiber. However, under the action of high temperature, the crystallized fiber will be sintered and gradually pulverized.
When powdered fiber is inhaled into the lungs, it can affect people's health.
European Union countries have listed refractory fibers as the second leading cause of cancer.
Some refractory insulation products used in heating furnaces have begun to change, such as microporous insulating bricks and sealing materials on the top of kilns, which are not only of low density, but also do not produce too much pulverized materials in the construction process, which is harmless to human body and pollution-free to the environment.
See: luoyang Aust energy-saving technology co., LTD. epsac.cn