PMF(polycrystalline fiber) Is the latest ultra-light heat-resistant insulation material in the world. It consists of mullite microcrystals. Polycrystalline fiber It combines the characteristics of crystalline materials and fibrous materials with excellent thermal stability. The use temperature is 1500 ℃, the melting point is 1840, the thermal conductivity is 1/6 of the traditional refractory brick, and the bulk density is only 1/25 of the traditional refractory brick. It is an ideal material for high temperature furnace to save energy and increase production.

Polycrystalline fiber technical indicators

Chemical composition al2o 3:72-74%

Al2o 3 + Silica: ~ 99.6%

Polycrystalline fiber-mullite as the main crystal phase

Fiber diameter 2-3.8 μm

Specific surface area of 35.5M2/g(1000 ℃)

Reburning shrinkage rate is about 1.0%(1500 ℃ x 6hr)

Unit weight 60-100kg/M3

The use temperature is 1500 ℃

polycrystalline fiber-Performance comparison

Prepared by chemical method, with microcrystalline structure, excellent thermal stability, the use temperature of more than 300~400 ℃. c.

The fiber diameter is small and uniform, the slag ball is small, and the product bulk density is 1/2~1/3.

◆ Large amount of fiber, high porosity and low thermal conductivity.

It has a large specific surface area and is an ideal high-temperature catalytic carrier material.

Polycrystalline fiber-PNF-100 series

The PNF-100 series adopts polycrystalline mullite fiber cotton felt, which is cut, compressed and wrapped into blocks without any binder.

polycrystalline fiberFeatures:

Thermal Impact Resistance

low thermal conductivity

Lightweight

Sound absorption performance

low heat storage

Polycrystalline fibers-Properties:

◆ Ingredients: al2o 3 72-75%, silica 28-25%

◆ Crystal phase: single mullite phase

◆ Melting point: 1840 ℃

The use of temperature: electric furnace

◆ Specific heat: 1.24KJ/kg.k

◆ Thermal conductivity (w/m .℃)1000 ℃ C- 0.226 1300 ℃-0.336 1200 ℃ ~ 0.264 1400 ℃ ~ 0.384

◆ Withdrawal contraction: 1500. C x6hr

◆ Unit weight: 100kg/cubic meter

◆Specification: 200x 100x 30~60mm mm

Polycrystalline fiber-use: can be used for all kinds of high temperature furnace hot surface lining. Such as steel, chemical, machinery and other industries of heating furnace, soaking furnace, forging furnace, heat treatment furnace, ceramics, building materials, electronics and other industries of sintering kiln, firing kiln.

PMF-300 Series

The PMF-300 series are made of polycrystalline mullite fiber loose cotton and special adhesive materials, and are made into elastic felt, pads, rings, etc. or hard plates, blocks, etc. by vacuum forming method.

polycrystalline fiber-Features:

have the power

low thermal conductivity

Thermal Impact Resistance

Easy to process

low heat storage

Lightweight

◆ Performance: using temperature: 1450 ℃

◆ Bulk density: 200~450kg/m3

◆ Withdrawal shrinkage: 1500 ℃,x1hr ~ 1.00%

◆ Thermal conductivity; (W/m. ℃)

1000 ℃ -0.16 1250 ℃ -0.22

1350 ℃ ~ 0.25

Polycrystalline fiber uses: high temperature resistance furnace, induction furnace, ladle cover, glass melting furnace, kiln car, high temperature radiant tube, high temperature vessel, burner boiler, etc.

Military, scientific research, aerospace, nuclear reactors and other special high-temperature components.

PMF-400 Series

PMF-400 series composite fiber is made of polycrystalline mullite fiber loose cotton and grade a aluminum silicate fiber to join the special bonding material, according to different temperature gradient, through the method of vacuum forming, laminated into hard brick, plate, pipe and other different parts.

Polycrystalline Fiber-Features:

have the power

low thermal conductivity

Thermal Impact Resistance

Easy to handle

◆ Use temperature: 1450 ℃

◆ Capacity: ~ 400kg/m3

◆Thermal conductivity:(W/M.℃)

1000 ℃-0.17 1250 ℃ -0.24

1350 ℃ -0.27

◆ Withdrawal contraction: 1400. C x24hr~1.0%

◆ Tensile strength (Kpa)213.80

◆ Compressive strength (Kpa)13.01

◆ Bending strength (Kpa)440.00 size: customized according to drawings

polycrystalline fiber-Uses: high temperature resistance furnace, induction furnace, ladle cover, hood furnace, glass melting furnace, kiln car, burner brick, etc.

Military, scientific research, aerospace, nuclear reactors and other high-temperature components.