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Ceramic Fiber Wool

The fiber surface of ceramic fiber wool is smooth and cylindrical, and the cross section is usually circular. Its structure is characterized by high porosity (generally greater than 90%), and large pore size and specific surface area. Since the air in the pores has a good heat insulation effect, the size of the pores in the fiber and the properties of the pores (open pores or closed pores) have a decisive impact on its thermal conductivity. In fact, the internal structure of ceramic fibers is a kind of A mixed structure composed of solid fibers and air, whose microstructure is characterized by

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Ceramic Fiber Wool

Category：

Insulation Thermal Material

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Ceramic Fiber Wool Details

Features

(1) The thermal conductivity is low, only 0.03 W/(m K) at room temperature, and 1/5 of clay brick at 1000 °C.

(2) The density of the product is small, generally between 64 and 500 kg/m3.

(3) The heat capacity is low, only 1/72 of refractory bricks and 1/42 of lightweight bricks.

(4) Good processing performance, soft and easy to cut fibers, strong continuity and easy winding.

(5) It has good sound absorption performance and can be used as a high-temperature sound-absorbing material.

(6) Good chemical stability, except for strong alkali, fluorine and phosphate, it is almost not corroded by chemicals.

(7) Good thermal shock resistance.

(8) The insulation performance is good, the volume resistivity at room temperature is 1×1013Ω·cm, and the volume resistivity at 800°C is 6×108Ω·cm.

(9) Ceramic fiber wool have high reflectivity to light waves with a wavelength of 1.8~6.0 μm

ceramic fiber

Applications

Ceramic fiber wool is usually processed into various styles of ceramic fiber products for selection in various industries. The most important use of ceramic fiber products is thermal insulation in high temperature environments. The application scope covers metallurgy, machinery, electronics, ceramics, glass, chemicals, automobiles, building materials, light industry, military industry, ships, aerospace and other fields.

At present, ceramic fiber products include blankets, felts, boards, paper, cloth, belts, ropes, coiled pipes, tiles, modules, special-shaped parts, plastics, spray coatings, smears, castables, etc.

Physical And Chemical Indicators

Brand Properties		STD BULK	HP BULK	HZ BULK
Chemical Composition(%)	Al2O3	≥44	≥45	≥34
	SiO2	≥52	≥54	≥50
	Fe2O3	≤1.0	≤0.5	≤0.5
	Na2O	≤1.0	≤0.2	≤0.2
	ZrO2	-	-	≥15
Specification Temp. (℃)		1260	1260	1430
Shot content (%)		≤15	≤15	≤12
Fiber Diameter(μm)		3.5

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