Polycrystalline Alumina Refractory Fiber

Product Description:

In the industrial insulation field, where extreme energy efficiency and tolerance to harsh operating conditions are paramount, SUNTHERM polycrystalline alumina refractory fiber, with its superior lightweight properties and high-temperature resistance, has become a core material for next-generation advanced thermal insulation and catalytic technologies. Produced using an internationally leading sol-gel process, polycrystalline alumina refractory fiber ensures high fiber purity and stable crystalline phase, maintaining excellent structural integrity even at temperatures far exceeding those of traditional materials.

Its unique microstructure endows it with a smooth, flexible fiber morphology and an extremely high specific surface area. This characteristic not only allows it to effectively suppress heat convection and conduction when used as an insulation filler, constructing a highly efficient thermal barrier, but also makes it excel in functional applications-as a catalyst carrier, the high specific surface area provides ample attachment sites for active components, significantly improving reaction efficiency.

Therefore, whether applied to high-temperature flue gas filtration, as a core component of catalytic combustion systems, or playing a crucial role as a reaction carrier in chemical and environmental exhaust gas treatment, polycrystalline alumina fiber, with its reliable physical and chemical stability, contributes to the achievement of clean industrial production and energy conservation and emission reduction goals.

Product Features:

Excellent specific surface area parameters, suitable for adsorption and catalysis applications;

Superior resistance to acids and alkalis;

Excellent electrical insulation properties;

High design flexibility; products with varying properties can be obtained by adjusting chemical composition and heat treatment processes.

Product Applications:

Raw material for fiber products (e.g., fiber blankets, felts, paper, boards, shaped parts, etc.)

Catalyst carrier material

High-temperature filtration material

Reinforcement for composites such as metal matrix, ceramic matrix, and resin matrix composites

Mat material for three-way catalytic converters

Thermal insulation material for the automotive industry

Thermal insulation filling material for high-temperature kilns and furnaces

Product Technical Parameters:

Item	AL72- F	AL72- M	AL95- M	AL95- N
Chemical Composition Al₂O₃, SiO₂ (%)	72-75:25-28	72-75:25-28	>95:<5	>95:<5
Mineral Structure	δ-Al₂O₃,γ-Al₂O₃	Mullite	γ-Al₂O₃	α-Al₂O₃
Classification Temperature (°C)	1600	1600	1600	1800
Melting Point (°C)	>1800	>1800	>2000	>2000
Density (g/cm³)	3.1	3.1	2.8	3.4
Average Fiber Diameter (μm)	5.5-7.5	5.5-7.5	3-5	3-5
Shot Content (%) (≥45μm)	0-2	0-2	0-2	0-2
Impurity Content (%)	<0.5	<0.5	<0.5	<0.5
Monofilament Tensile Strength (MPa)	≥1200	≥1000	-	-
Monofilament Tensile Modulus (GPa)	≥100	≥100	-	-

 

Product Certificates：

SUNTHERM has passed a variety of industry certification tests, such as CE, SGS, ASTM, ISO9001-2000, SASO, ROHS, BV, MSDS and so on.

Customer visits:

Packaging Display:
SUNTHERM boasts a professional team with vast experience in tailoring packaging solutions for diverse products across various industries.

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FAQ:

Q1: What is your typical response time for inquiries?

A1: We respond to all inquiries within 24 hours, 7 days a week, including weekends.

Q2: Are you a manufacturer or a trading company?

A2: We are a direct manufacturer with full in-house production and sales capabilities, operating under a self-produced, self-sold business model.

Q3: Do you support product customization?

A3: Yes, we provide OEM/ODM services and can customize products based on your drawings, samples, or specifications.

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