Refractory Alumina Fiber Paper

Product Introduction

Refractory Alumina Fiber Paper is produced from polycrystalline alumina fibers combined with specialized binders, offering exceptional flame retardancy, thermal insulation, electrical insulation, and resistance to extreme temperatures and aging. Free of halogens, non-toxic, and odorless, it provides high dielectric strength and reliable protection in thermal and fire-safety applications. The material generates minimal dust and is easy to cut, form, and process, making it ideal for direct use or integration into electrical devices, electronic components, and battery cells for thermal management and flame-retardant insulation.

With its soft, flexible structure, Refractory Alumina Fiber Paper can be easily shaped or wrapped around complex geometries. It is widely used in high-temperature furnace linings, aerospace thermal barriers, new-energy battery insulation, semiconductor heat-treatment supports, and in the metallurgical, ceramic, and glass industries for thermal insulation and sealing. As an environmentally friendly, high-efficiency thermal material, it enhances equipment safety and thermal performance while ensuring long service life and strong environmental compatibility.

Main Features

Ultra-high temperature resistance: Suitable for continuous use at 1100–1200 °C.

Excellent thermal insulation: Low thermal conductivity effectively minimizes heat transfer.

Strong chemical resistance: Withstands acids, alkalis, and oxidation with stable performance.

Flexible and easy to fabricate: Can be cut, folded, and shaped to fit complex structures.

Low thermal shrinkage: Maintains dimensional stability without deformation at high temperatures.

Outstanding electrical insulation: Provides reliable insulation even under elevated temperatures.

Safe and eco-friendly: Contains no asbestos and releases no harmful substances during heating.

Ideal for high-temperature insulation, sealing, and electrical insulation applications.

Product Applications

High-temperature industrial furnaces: Insulation pads for furnaces and kilns, as well as filling materials for expansion joints.

Aerospace: Thermal shielding layers and insulation components for aircraft and engine systems.

New-energy batteries: Insulation layers between lithium battery cells to prevent heat propagation.

Semiconductor manufacturing: Used in heat-treatment and diffusion furnaces as insulation and carrier materials.

Glass and ceramic industries: Roller-track seals for high-temperature kilns and isolation gaskets for products.

Fire protection: Materials for advanced fireproof blankets, sealing strips, and other passive fire-safety products.

Electronics and appliances: Insulation and thermal-protection materials for high-temperature sensors and electric heating devices.

Technical Parameters

Test	Standard	Technical Index
Appearance	Q/370500DHGX008-2023	Smooth and flat surface with no impurities
1000V DC Insulating property	Under condition of 1000V DC,test time 60s	Insulation resistance≥500MΩ
Fibre ID	Q/370500DHGX008-2023	5.5~7.5μm
Tensile Strength	GBT 17911-2018	≥200kPa
Flame Retardance Property	UL94-V0	Meet
Thermal Conductivity	GB/T 10297-2015	≤0.04w/m ·k

 

Product Certificates

As a professional manufacturer of refractory insulation materials, SUNTHERM has many years of industry experience. Its products have passed many international certifications such as CE, SGS, ISO9001, etc., with excellent quality and reliable performance.

 

Precautions for Using Alumina Fiber Paper

Handle gently: The material is relatively brittle and prone to tearing; avoid excessive bending or folding.

Use protective equipment: Wear gloves and a mask during handling to minimize exposure to fiber dust.

Cut with a sharp tool: Use a sharp knife or blade for clean scoring and cutting to prevent edge fraying or damage.

Respect temperature limits: Do not operate the material beyond its rated maximum temperature.

Avoid over-compression: Apply uniform, moderate pressure during installation to prevent crushing or deformation.

Store properly: Keep the material in a dry, well-ventilated environment to maintain performance and stability.

FAQ

Q1: What are your payment terms?

A1: We require a 30% advance payment, with the remaining 70% payable before shipment.

Q2: What are your shipping methods?

A2: Standard shipments are made by sea. For urgent orders, we can arrange delivery by air or truck.

Q3: What products do you supply?

A3: We offer a wide range of refractory insulation materials, including ceramic fiber products, biosoluble fiber products, alumina fiber materials, new inorganic fiber materials, and rock wool. We also supply complete ceramic fiber and rock wool production lines.

Q4: Can you provide customized products or OEM services?

A4: Yes, we offer customization based on drawings, samples, or specific technical requirements. OEM and ODM services are also available.

Q5: How long is your production and delivery time?

A5: Standard products typically take 7–15 days to produce. Customized items may require more time depending on specifications and order quantity.

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