Polycrystalline Alumina Fiber Paper For Thermal Insulation

Product Description:

SUNTHERM ALWOOL polycrystalline alumina fiber paper for thermal Insulation uses high-quality polycrystalline alumina fibers as the main raw material, combined with advanced inorganic or organic binders, and is manufactured through a precise papermaking process. It not only retains the inherent high-temperature resistance of polycrystalline alumina fibers but also combines the flexibility and ease of processing of paper-based materials, making it an ideal solution for thermal management, electrical insulation, and fire safety in harsh operating conditions.

SUNTHERM ALWOOL polycrystalline alumina fiber paper for thermal Insulation is composed of high-purity polycrystalline alumina fibers, possessing extremely low thermal conductivity and thermal shrinkage. It maintains excellent thermal insulation at extremely high temperatures, effectively blocking heat transfer and significantly reducing energy consumption. It also features extremely high resistivity and dielectric strength, with a high and stable dielectric constant, providing reliable electrical isolation in high-frequency, high-voltage environments, ensuring the safe operation of electronic equipment.

SUNTHERM ALWOOL polycrystalline alumina fiber paper for thermal Insulation is non-toxic and odorless, and does not burn, melt, or produce toxic fumes when exposed to fire. It not only possesses natural flame retardancy but also withstands extreme high and low temperature impacts, exhibits excellent aging resistance, and is durable.

Based on product thickness, our product models are: AL003, AL006, AL008, AL010, AL020, AL030, AL040, and AL050.

Product Features:

Excellent resistance to both high and low temperatures, operating range: −200 °C to 1300 °C

Superior thermal insulation and aging resistance

Outstanding electrical insulation performance

Exceptional corrosion resistance; retains over 90 % strength after exposure to strong acids or alkalis

Low smoke, non-toxic, with good flame-retardant properties; compliant with EU RoHS Directive

Product Applications:

Thermal insulation and fire protection for battery cells

Insulation and flame retardancy in electronic products

Thermal insulation for furnace wall linings

Resin-based thermal insulation and fire-resistant composites

Aerogel thermal insulation composites

Sealing for high-temperature appliances

Product Technical Specifications:

Test Item	Standard	Specification
Appearance	Q/370500DHGX008-2023	Smooth and flat surface with no impurities
Insulation Performance (1000V DC)	Insulation resistance test under 1000V DC for 60 seconds	Insulation resistance value shall be ≥500 MΩ
Fiber Diameter	Q/370500DHGX008-2023	5.5~7.5μm
Tensile Strength	GB/T 17911-2018	≥200kPa
Flame Retardancy	UL94-VO	Compliant
Thermal Conductivity	GB/T 10297-2015	≤0.04W/(m・K))
ELV	EU ELV Directive 2000/53/EC	Meets limit requirements

Product Performance Indicators：

Item	AL003	AL006	AL008	AL010	AL020	AL030	AL040	AL050
Thickness (mm)	0.30	0.60	0.80	1.00	2.00	3.00	4.00	5.00
Thickness Range (mm)	0.25-0.35	0.50-0.70	0.70-0.90	0.90~1.10	1.80-2.20	2.70-3.30	3.60-4.40	4.50-5.50
Areal Density (g/m²)	20	60	80	100	250	400	550	700
Range of Areal Density(g/m2)	15-25	50-70	-	90-110	225-275	360-440	495-605	630-770

Product Certificate

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FAQ

Q1: Can you provide samples? What are the sample policies?

A1: Yes, samples are available for quality verification. Sample fees and shipping costs are generally borne by the customer, but can be refunded upon placing a formal order.

Q2: How do you ensure product quality and packaging for export?

A2: We implement strict quality control throughout production. For export, goods are packaged securely using standard export cartons, wooden cases, or pallets as needed to ensure safe transit.

Q3: What are the main components of SUNTHERM ALWOOL polycrystalline alumina fiber paper?

A3: It is primarily made from polycrystalline alumina fibers and an eco-friendly binder. The product is halogen-free, non-toxic, and odorless.

Q4: What are the typical applications of this product?

A4: It is suitable for applications requiring thermal insulation, fire protection, electrical insulation, or flame retardancy, such as electrical equipment, electronics, battery modules, and high-temperature pipe insulation.

Q5: Is the material easy to process?

A5: Yes, it can be easily cut, stamped, folded, or shaped with minimal dust release during processing.

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