Alumina silicate ceramic fiber paper is produced by adding 5–15% organic or inorganic binders to refractory fiber raw materials and forming a paper-like product using papermaking techniques. Fiber paper with organic binders offers good elasticity and flexibility, providing excellent workability, while paper with inorganic binders is non-combustible but generally has lower strength and flexibility.
The fiber paper is typically available in thicknesses of 0.5, 1.0, and 2.0 mm, and is supplied in rolls or sheets with widths of 300 mm or 600 mm.
For 1.0 mm thick paper, the tensile strength ranges from 1000–1600 g/25 mm for paper with organic binders, and 300–1000 g/25 mm for paper with inorganic binders. The bulk density of the paper ranges from 0.25–0.35 g/cm³.
|
Project/Product Name |
Standard Type |
High Alumina Type |
Zirconium Containing Type |
|
Classification Temperature (℃) |
1260 |
1400 |
1430 |
|
Operating Temperature (℃) |
1050 |
1200 |
1350 |
|
Bulk Density (Kg/M³) |
200±10 |
200±10 |
200±10 |
|
Organic Matter Content (%) |
6-8 |
6-8 |
6-8 |
|
Thermal Conductivity(W/m.k) Density (200 Kg/M3) |
0.075-0.085 |
0.075-0.085 |
0.075-0.085 |
|
(200℃) |
(200℃) |
(200℃) |
|
|
0.115-0.121 |
0.115-0.121 |
0.115-0.121 |
|
|
(400℃) |
(400℃) |
(400℃) |
|
|
0.165-0.175 |
0.165-0.175 |
0.165-0.175 |
|
|
(600℃) |
(600℃) |
(600℃) |
|
|
Al2O3 % |
45-47 |
51-53 |
39-40 |
|
SiO2 % |
51-52 |
49-47 |
-- |
|
ZrO2 |
-- |
-- |
15-17 |
|
Product Dimensions (mm) |
Thickness：1-10mm; Width：610or1220mm; Length：Make as required. |
||
■ Low thermal conductivity and low heat capacity
■ Excellent thermal shock resistance
■ Outstanding flexibility and tear resistance
■ Asbestos-free, corrosion-resistant, and chemically stable with molten aluminum
■ Excellent electrical and sound insulation properties
■ Easy to machine
■ Tough texture with high compressive strength
■ Smooth surface and uniform thickness
Alumina silicate ceramic fiber paper is produced by dispersing loose fibers in water to form a suspension, which is then processed on a papermaking machine, followed by dehydration and drying.
Main manufacturing process:
Loose fibers → Dispersion → Slag removal → Pulping (binder addition) → Papermaking → Drying → Finished fiber paper
1. Loose Fibers
The length, diameter, and uniformity of fibers significantly influence both the papermaking process and the final product's performance. Ideally, the fiber aspect ratio should not exceed 500:1. Fibers must be well-dispersed, uniformly distributed in length, and free from entanglement. Typical fiber length is under 10 mm; longer fibers increase paper strength but may cause entanglement. Exact optimal parameters for fiber length in alumina silicate ceramic fiber paper are still under investigation.
2. Dispersion
Pulping is performed using a beater or hydraulic beater. Mechanical action and fluid shearing shorten and disperse the fibers, providing the foundation for uniform papermaking. This is a critical step in the process.
3. Slag Removal
Impurities or slag particles in the raw fiber can reduce both strength and thermal insulation performance. A vortex slag remover is used to remove these particles after pulping.
4. Pulping and Binder Addition
After slag removal, the pulp is adjusted to the proper concentration, and an appropriate amount of binder is added. Refractory fibers alone cannot form paper; binders enhance fiber bonding and increase strength. For example, paper with 10% binder content can be five times stronger than that with 2.5%.
●Organic binders: synthetic latex, cellulose, polyvinyl alcohol, starch, etc.
●Inorganic binders: silica sol, colloidal bentonite, colloidal magnesium silicate, etc.
Excess inorganic binder can make the paper brittle and difficult to handle.
5. Papermaking
Alumina silicate ceramic fiber paper is a heat-insulating and fire-resistant material made using papermaking processes. It is internationally referred to as ceramic fiber paper and is used for high-temperature insulation, sealing, and filling applications.
The paper is made from high-purity alumina silicate fiber with extremely low slag content, using a proprietary papermaking process. Advanced production technology ensures uniform fiber distribution and strict control of thickness and density. The resulting product exhibits excellent thermal insulation performance, crack resistance, and cleanliness, making it ideal for applications where space is limited and high performance is required.
■ Industrial insulation, sealing, and protective materials
■ Expansion joint filler
■ Thermal insulation for instruments, equipment, and heating elements
■ Thermal insulation materials for the automotive and aerospace industries
■ Insulating materials for the building materials, metallurgy, and glass industries
■ Gaskets for molten metal applications
Packaging: Supplied in rolls or sheets
Inner packaging: Sealed in moisture-proof plastic film
Outer packaging: Cartons or woven bags
Labeling: Labels clearly indicate specifications, thickness, width, and batch number
Export packaging: Palletized packaging is available for export and suitable for international shipping
Please contact Shandong Haixin Refractory Materials Co., Ltd. for samples, technical specifications, and expert guidance on selecting aluminum silicate ceramic fiber paper.
fAQ
Q:1.Can aluminum silicate ceramic fiber paper be used at high temperatures for extended periods?
A:Yes. It can be used reliably within the specified temperature range for long-term applications.
Q:2.Is aluminum silicate ceramic fiber paper easily damaged?
A:No. It is tough and resistant to damage under normal construction and use conditions.
Q:3.What is the main advantage of aluminum silicate ceramic fiber paper compared to other insulation materials?
A:It maintains excellent thermal insulation performance and structural stability at high temperatures while being lightweight, flexible, and environmentally friendly, offering high cost-effectiveness.
Q:4.Is the maximum operating temperature for long-term or short-term use?
A:The maximum operating temperature listed in the specifications is for long-term use. The material can withstand higher temperatures for short periods (e.g., a few hours), but prolonged use above the rated temperature is not recommended.
Q:5.How should unused products be stored?
A:Store in a dry, well-ventilated area, protected from moisture and rain. Avoid stacking too high to prevent deformation under pressure.
Q:6.What precautions should be taken during installation?
A:Wear protective gloves and a mask to prevent fiber exposure to skin and respiratory tract. Use sharp tools for clean cutting, and select appropriate fastening methods based on temperature and application.
Q:7.What should I do if the product received has quality issues?
A:Report any quality issues within 7 days of receipt, including relevant photos or test reports. We will have professionals verify the problem and, once confirmed, will replace or refund the product free of charge.
Q:8.Do you provide installation guidance?
A:Yes. For large orders or complex applications, paid on-site installation guidance is available. Fees and arrangements can be negotiated.
Q:9.Is the product recyclable?
A:Yes. Aluminum silicate ceramic fiber paper is inorganic and can be landfilled without environmental impact. In some cases, it can also be recycled and reprocessed.
Q:10.Do you support OEM/ODM services?
A:Yes. We fully support OEM and ODM projects and provide flexible solutions from product customization to full-chain services according to customer needs.
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