Introduction
Ceramic fiber paper is made of ceramic fibers as the main raw material, using a wet molding process.
Ceramic fiber paper exhibits excellent chemical stability, resisting most corrosive agents-except hydrofluoric acid, phosphoric acid, and concentrated alkalis. Even when wetted by water or steam, its thermal and physical properties fully recover after drying. Most grades of ceramic fiber paper contain no bound water.
Ceramic fiber paper features good dielectric strength and is characterized by being asbestos-free, with long fibers, minimal slag balls, low bulk density, high strength, good elasticity, and ease of construction operations such as punching, cutting, and winding. It is suitable for heat insulation, thermal preservation, sealing, electrical insulation, sound absorption, and filtration in high-temperature environments. As an advanced lightweight refractory material, it can replace asbestos products.
Classification
Standard-Type Ceramic Fiber Paper
Mainly made from loose blown ceramic fiber cotton, combined with binders, fillers, and additives in specific proportions. It is suitable for heat insulation, thermal preservation, and sealing in general high-temperature environments, with a service temperature up to 1260°C.
High-Alumina Ceramic Fiber Paper
Manufactured by increasing the aluminum oxide content in the raw materials, enhancing high-temperature resistance and mechanical strength. The service temperature typically ranges from 1300°C to 1400°C, making it suitable for industrial environments with higher temperature requirements.
Zirconia-Containing Ceramic Fiber Paper
Prepared by adding components such as zirconium oxide during production, which further improves high-temperature resistance, thermal shock resistance, and chemical corrosion resistance. It can withstand temperatures above 1400°C and is mainly used in harsh environments characterized by high temperatures and strong corrosion.
Advantage
High Temperature Resistance: Standard ceramic fiber paper can be used continuously at temperatures up to 1000°C and temporarily up to 1260°C. High-alumina and zirconia-containing types offer higher service temperatures, with some zirconia-containing grades capable of withstanding 1400°C.
Good Thermal Insulation: It features low thermal conductivity-for example, at 800°C, thermal conductivity can be as low as 0.12 W/(m·K)-effectively preventing or slowing heat transfer.
Excellent Electrical Insulation: As an inorganic silicate material, it is non-conductive at high temperatures and exhibits better electrical insulation than glass fiber, including superior high-temperature dielectric properties.
Superior Sealing Performance: With inherent elasticity, it is suitable for high-temperature sealing, effectively preventing gas and liquid leakage.
Strong Chemical Stability: It resists acid-base corrosion and erosion from molten metals such as aluminum and zinc, showing no reaction with molten aluminum.
High Mechanical Processability: Soft, elastic, and tough (non-delaminating), it offers high tear resistance and flexibility, allowing processes such as cutting, punching, and multi-layer lamination.
Environmentally Friendly: Asbestos-free, it is safe for humans and the environment-non-toxic, harmless, and odorless.
Zinfon Refractory Technology Co.,Ltd.
We provide one-stop services from technical consultation to design, production, and after-sales support.
Raw Materials
Aluminum silicate ceramic fiber wool as the main raw material
Physical and Chemical Specifications
|
Brand Properties |
DK-1260 |
DK-1350 |
DK-1430 |
|
|
Specification Temp(℃) |
1000 |
1100 |
1300 |
|
|
Bulk Density(kg/m³) |
200 |
200 |
200 |
|
|
Tensile strength(Mpa) |
0.4 |
|||
|
Organic matter content(%) |
≤8 |
|||
|
Thickness(mm) |
0.5-10mm |
|||
|
Width(mm) |
610mm1200mm |
|||
|
Chemical Composition |
Al₂O₃ |
47 |
48 |
40 |
|
SiO₂ |
52 |
51 |
15-17ZrO₂ |
|
|
Fe₂O₃ |
0.5 |
0.5 |
0.2 |
|
|
NaO₂ |
0.2 |
0.2 |
0.2 |
|
Process
Raw Material Preparation (ceramic fiber wool, binding agents, etc.) → Mixing & Opening → Pulping (dispersing in water to form slurry) → Wet Molding (papermaking/vacuum filtration) → Pressing & Dewatering → Drying & Curing (hot air and high-temperature treatment) → Post-Processing (coating, slitting) → Quality Control & Packaging → Finished Products
Wet Molding (Common Processes)
Papermaking Method:
The slurry is evenly distributed onto the forming wire mesh via a headbox. Water is filtered through the mesh, while fibers are retained on the surface, forming a wet paper web. The wire mesh then conveys the wet web through press rolls to mechanically remove excess water, enhancing the paper's density and strength.
Vacuum Forming:
This method uses vacuum suction to accelerate slurry filtration, improving fiber deposition efficiency. It is ideal for producing thick or high-density ceramic fiber paper.
Application
Industrial Furnaces: Used for lining insulation in kilns, boilers, and heating furnaces to reduce heat loss and improve energy efficiency. Also serves as insulation for chemical equipment and seals pipelines, valves, and flanges to prevent heat and media leakage.
Automotive Industry: Insulates engine compartments to protect surrounding components from heat, enhancing performance and reliability. Also used in exhaust pipes to reduce heat transfer to the vehicle body and provide acoustic insulation.
Electrical Equipment: Provides insulation and thermal management for heating devices, instruments, and components (e.g., microwaves, induction cookers, ovens). Prevents heat transfer to external surfaces, ensuring user safety and improving energy efficiency.
Construction: Used in fire-rated doors, walls, and shutters for thermal insulation and fire resistance. Also applied in building envelopes to enhance energy conservation.
Other Fields:
Metallurgy: Used as linings for aluminum casting molds and gaskets for molten metal handling.
Glass Industry: Insulates glass kiln roofs and aids in glass demolding processes.
Aerospace & Marine: Provides thermal insulation and sealing in high-temperature environments.
Storage Requirements
Waterproof & Moisture-Resistant Environment:
Ceramic fiber wool is highly hygroscopic. Moisture absorption significantly degrades its thermal insulation properties. Store in a dry, well-ventilated area, protected from direct exposure to water or humidity. Avoid outdoor storage.
Protection Against Mechanical Damage:
The material's internal structure consists of interwoven fibers with limited tensile strength. Rough handling can damage fiber surfaces. During stacking and transportation, prevent collisions, impacts, and excessive compression.
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