The heat transfer characteristics of fiberglass refractory fibers: Except for hydrogen, most gases including air are low thermal conductivity and low heat capacity substances in a stationary state. The thermal conductivity of refractory fibers is basically close to that of gas, because refractory fibers are interwoven with solid fibers, and the voids are filled with gas, with a porosity of 90%. The filling of a large amount of air endows refractory fibers with high-temperature insulation and thermal insulation properties. In theory, high-temperature insulation materials must meet the following two basic conditions: (1) thermal conductivity λ It should be as small as possible, λ → 0, so that the heat flux from the high temperature zone to the low temperature zone is very small, that is, for the temperature difference AT at two different positions, the heat flux density q should tend to 0, q= λ AT → 0 (2-1) (2) The heat capacity should be as small as possible, so that only a small amount of heat is stored in the material when the furnace temperature changes frequently. As a specific heat capacity c, the heat capacity multiplied by the volume density p should also tend towards 0, cp. p, → 0 (2-2). The refractory fiber structure has continuous pore phases and is divided into unconnected pores, which exist in three ways: hot The heat in refractory fiber products will be transferred through conduction, radiation, and convection. Due to the composition of fiber materials consisting of at least two phases, namely solid phase and gas phase, heat transfer occurs at the interface of these phases. The interweaving of refractory fibers has almost no directionality, and solid thermal conductivity can only be carried out along the fiber rod from high temperature to low temperature direction, so solid thermal conductivity is not completely perpendicular to the hot surface. Some heat transfer pathways are winding and circuitous, which also reduces the strength of fiber solid phase thermal conductivity. In addition, most solid phases are in point contact, so the heat transfer process in solid phases is also a process of increasing thermal resistance. For the gas phase, due to the high porosity, the convective heat transfer of gas in the pores is minimal. The hot air flow inside the fiber is divided and obstructed by multiple pores, and is almost in a stationary state. The pressure inside the dispersed pores is fixed, and this pressure also forms a dense solid shield with the solid fibers, hindering the passage of hot air flow. Such pores, also known as pore chambers, can only accept the thermal conductivity of molecules in the gas and the radiation heat from the hot gas. In multiphase porous refractory fibers, in addition to solid phase thermal conductivity, there is also a thermal conduction process inside the pore chamber. This thermal conduction in the gas phase is carried out through the collision process of gas molecules.

Jiangyin Jianbo Insulation Materials Co., Ltd. was founded in 2009. It is a professional company that produces aluminum foil composite insulation materials, aluminum foil tape, aluminum foil fiberglass cloth, fiberglass cloth and aluminum foil tape, glass fiber cloth, aluminum foil cloth, and aluminum foil composite fiberglass. It is located in the Economic Development Zone of Xuxiake Town, Jiangyin City, Jiangsu Province, covering an area of over 10000 square meters. It is situated in the economic center of the Yangtze River Delta and borders Shanghai to the east.