The most commonly used aluminum silicate fiber felt is heat insulation and heat preservation materials. Many people may wonder why it has such a good heat preservation effect? This is inseparable from its own performance, the following is an example for everyone:
1.The convective heat transfer of the gas; because the aluminum silicate fibers overlap each other, a lot of air silos are formed inside the aluminum silicate fiber felt. These air silos store a large amount of air, making the air unable to be free. Flow is generally relatively static. The heat absorbed by the gas can only be transmitted inside the gas by conduction, and because the gas has a small thermal conductivity in a static state, it is impossible for the fiber paper to use the gas for heat transfer.
2. Conduction and heat transfer of the fibers; because the interweaving of the aluminum silicate fibers in the felt has no directionality, the fibers are in all directions, and the heat is transferred along the fibers, and the fibers are rarely perpendicular to the hot surface In addition, the fibers are also overlapped with each other, which increases the thermal resistance of heat conduction. Therefore, the heat conduction effect of the heat in the aluminum silicate fiber felt is not obvious.
3. the radiation heat transfer of the fiber; the fiber in the aluminum silicate fiber mat is not transparent, so that the heat rays cannot penetrate the fiber, and the fiber is very fine, so it cannot receive the heat radiation well, so the heat transfer The effect is not obvious.
