Thermal insulation scheme of hot galvanizing annealing furnace construction material ceramic fiber blanket

  Manufacturability and stability of ceramic fiber blanket:
(1) The color is bright white and the scale is regular,
(2) Without any bond,
(3) It integrates fire resistance, heat insulation and thermal insulation,
(4) The temperature resistance is 950-1400 ℃,
(5) It can still maintain good tensile strength, toughness and fiber structure when used in neutral and oxidizing atmosphere for a long time

 
Thermal insulation performance:
Materials that can block heat flow transmission are also called thermal insulation materials
Thermal insulation materials are divided into porous materials and heat reflective materials
The former uses the pores contained in the material itself to heat up, because the thermal conductivity of the air or inert gas in the gap is very low, such as foam materials, fiber materials and so on
The latter material has high reflection coefficient and can reflect heat, such as gold, silver, nickel, aluminum foil or metallized polyester, polyimide film, etc
The aerospace industry has strict requirements for the weight and volume of the thermal insulation materials used, and often requires them to have the properties of sound insulation, vibration damping, corrosion prevention and so on
Various aircraft have different requirements for thermal insulation materials
Thermal insulation is often used in aircraft cockpit and cockpit with foam plastics, ultra-fine glass wool and high silica cotton
The thermal insulation material used for missile head is phenolic foam in the early stage
With the application of polyurethane foam with good temperature resistance, the single insulation material is developed into sandwich structure
The thermal insulation method of the missile instrument cabin is to apply a layer of foaming coating with a thickness of several millimeters on the outer skin of the cabin, which is used as an anti-corrosion coating at room temperature, when the aerodynamic heating reaches 200 DEG; When the temperature is above C, it will be evenly foamed and play the role of heat insulation
The artificial earth satellite is moving in the alternating environment of high temperature and low temperature
It is necessary to use multi-layer thermal insulation materials with high reflection performance
It is generally composed of dozens of aluminized films, aluminized polyester films and aluminized polyimide films
In addition, the successful development of surface heat insulation tile not only solves the heat insulation problem of space shuttle, but also marks a higher level of development of heat insulation materials

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