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Polycrystalline Mullite Fiber Special Shaped Products

Polycrystalline Mullite Fiber Special Shaped Products is a kind of hard fiber products using the polycrystalline mullite bulk fiber as raw materials, processed by filter pressing through wet-processing vacuum. Its volume weight ranges from 300 to 600 kg/m2. It is fit to electrical resistance furnace’s whole flue, mosaic circuit board, all kinds of high-temperature kiln’s bricklaying, hanging and anchor of the furnace top, fireguard in the furnace, thermal insulation sheet of interlayer and joint, etc.

Technical Index

Chemical Composition

AL2O3:72-74% AL2O3+SiO2:~99.6%

Main Phase

Mullite

Fiber Diameter

2-3.8μm

Specific Surface Area

35.5M²/g(1000℃)

Reheating Shrinkage

~2.0%(1500℃*6hr)

Volume Weight

300-600kg/M³

Use Temperature

1700℃

Thermal Conductivity(w/m.℃)

1000℃

0.16-0.17

1250℃

0.22-0.24

1350℃

0.25-0.27

Specification

Customize according to the requirements

 Note:

1. Data are average results of standard tests which are subject to variation, don't show the guarantee data of product quality because of fluctuating within certain range.

2. The size is also can be designed according to the clients’ requirement.

Technical Index

Chemical Composition

AL2O3:72-74% AL2O3+SiO2:~99.6%

Main Phase

Mullite

Fiber Diameter

2-3.8μm

Specific Surface Area

35.5M²/g(1000℃)

Reheating Shrinkage

~1.0%(1500℃*6hr)

Volume Weight

60-100kg/M³

Use Temperature

1600℃

Characteristics 

Low thermal conductivity

Low heat capacity

Thermal shock resistance

Excellent chemical stability

Does not contain any binder and other corrosive substances

Still loose, pliable and has good elasticity under high temperature

Application 

1. As basic material, can be used as raw material of fiber deep processing products such as board, paper, vacuum forming parts

2. Expansion joints or short-term insulation repair filling material

3. Thermal insulation of concrete and composite materials