Carbon Fiber Felt

Standard Carbon Fiber Flat Rigid Felt

Standard carbon fiber flat rigid felt is produced by mixing and pressing of Pan-based carbon fiber material and binder, followed by high temperature treatment at temperature up to max. 2300℃. In the final production step the rigid felt is machined to the desired dimensions. Rigid felt is a rigid insulation material with low thermal conductivity based on carbon fibers (<0.25 W/m.k (1000 C)). It shows its best performance in temperatures beyond 800℃ in inert gas or vacuum furnaces. The max operation temperature can reach up to 3000℃.

Carbon Fiber Flat Felt (surface Graphite Foil)

Carbon fiber rigid felt can be manufactured of laminated panels with graphite foil layers as well as the application of an edge and erosion protection is possible. This kind of rigid felt can be machined to the desired dimensions. This rigid felt can prevent dust infiltration, also can reflect heat to prevent heat loss.

Carbon Fiber Flat Felt (surface Carbon Fabrics)

Carbon fiber rigid felt can be manufactured of laminated panels with carbon fabrics layers as well as the application of an edge and erosion protection is possible. This kind of rigid felt can be machined to the desired dimensions. This rigid felt have good wear resistance and can maintain their appearance and performance for a long time.

Coated Carbon Fiber Rigid Felt

Coated carbon fiber rigid felt is made up of carbon fibers measuring just a few millimeters in length, emanating from viscose base fibers. These fibers are interconnected in a matrix produced by the carbonisation of phenolic resin.The material is then vacuum-treated at temperatures above 2,000℃ to ensure its temperature stability and the absence of outgassing. As a benchmark, the material contains no more than 500 ppm of impurities. Impurity levels below 20 ppm can be achieved through a halogen purification process.

Carbon Fiber Furnace Bottom Insulation Felt

Carbon fiber furnace bottom insulation felt, attached with graphite foil layers, has better airflow erosion resistance, reduce corrosion, ensure temperature uniformity, heat insulation and extend the service life, compared with ordinary rigid felt.

Pan-based Carbon Fiber Felt Tube

Pan-based Carbon fiber felt tube, is primarily used as a Vacuum Furnace Insulation materials. Its size can be customized according to the dimensions of your furnace. This product plays a key role in providing insulation and heat resistance for the body of the vacuum furnace. The materials used for this product can be selected from PAN-base carbon fiber, with a high carbon content of up to 99%.

Rayon-based Carbon Fiber Felt Tube

Rayon-based carbon fiber felt tube is primarily used as insulation material for vacuum furnaces. Its size can be customized according to the dimensions of your furnace. This product plays a key role in providing insulation and heat resistance for the body of the vacuum furnace. The material used for this product is rayon-based carbon fiber, which has a high carbon content and offers better insulation performance at high-temperature environments above 2000℃

Short Fiber Insulation Felt

Short Fiber Insulation Felt is a high-performance carbon-based insulation material engineered for extreme-temperature industrial environments. Composed of carbon fibers bonded with a carbon matrix, it forms rigid plates, cylinders, or custom 3D-machined shapes.

Pan-based Graphite Soft Felt

This product has an extremely low thermal conductivity, high temperature resistance, ablation resistance, high purity, and high strength. It is commonly used as an insulating and heat-resistant material for various high-temperature equipment. Thanks to its unique flexibility, it can be used to fill relatively complex spaces and is therefore often employed as a furnace repair material.

Our company can provide customers with customized products of PAN-based carbon fiber and various performance requirements, with the maximum operating temperature reaching up to 3000°C.Our insulating flexible felt has an extremely uniform thickness and density distribution, ensuring consistently high insulation performance that has high temperature stability and long life.

Rayon-based Graphite Carbon Felt

The thermal conductivity of this product is extremely low, and in other words, its thermal insulation is excellent. This product has high temperature resistance, high purity, and low ash content. It can be used in industries with high requirements for insulation, for example, as the insulation layer in single crystal growth furnaces and other high temperature equipment.

C/C Composite

C/C Composite Flat Panels

Alpasun carries panels larger than 3 meters in size and have resolved technical challenges such as warping, delamination, and low production efficiency when the thickness is less than 3 mm.

C/C Composite Fixtures

Alpasun C/C composite fixtures, represent a significant technological leap over traditional cast and wrought steel fixturing solutions. Engineered with modular designs-including grids, shelving systems, and custom configurations-these fixtures are tailored to meet the rigorous demands of modern industrial processes, particularly in high-temperature environments.

C/C Composite Nut And Bolt

C/C composite nut and bolt is a cutting-edge fastening solution designed for extreme environments, leveraging advanced carbon fiber composite technology.

C/C Composite Crucible

C/C Composite Crucible by Alpasun is a cutting-edge solution engineered for high-temperature crystal growth processes, particularly in the Photovoltaic industry. Crafted from carbon-carbon (C/C) composites, this crucible excels in extreme environments, offering unmatched thermal stability, mechanical resilience, and chemical inertness. Designed for precision and longevity, it ensures optimal performance in applications demanding rigorous thermal cycles and contamination-free conditions.

C/C Composite Guide Tube

Carbon/Carbon (C/C) Composite Guide Tube is specifically designed for applications in high-purity silicon crystal growth. It replaces traditional graphite guide tubes, significantly enhancing efficiency in semiconductor and photovoltaic crystal production by optimizing temperature gradient fields and gas flow dynamics.

C/C Composite Crucible Holder

Carbon-carbon composite crucible holder is a high-performance support structure designed to secure and stabilize crucibles during extreme-temperature processes like metal casting, crystal growth, and chemical synthesis. Built from carbon fiber-reinforced carbon matrices, it excels in harsh environments requiring thermal stability, corrosion resistance, and mechanical durability.

C/C Composite Insulation Sleeve

Carbon-carbon composite insulation sleeves are advanced components crafted from carbon fiber-reinforced carbon matrices, designed for high-temperature insulation and structural support. Renowned for their exceptional thermal stability and mechanical resilience, these sleeves are critical in industries requiring precise temperature control, energy efficiency, and durability under extreme conditions.

C/C Composite Ring

Carbon/Carbon (C/C) Composite Ring is a specialized transition component engineered to create and maintain the structural integrity of crystal growth chambers in high-purity silicon production. Made from carbon fiber-reinforced carbon matrices, it combines lightweight design with extreme thermal and mechanical stability, making it indispensable for energy-efficient semiconductor and photovoltaic manufacturing processes.

C/C Composite Channel

Alpasun’s Carbon-Carbon Composite (CFC) Channels are precision-engineered structural components designed for extreme high-temperature environments. Crafted from continuous carbon fibers aligned at 0°/90° within a carbon matrix, these channels deliver unmatched strength-to-weight ratios and thermal stability, outperforming traditional graphite and metallic materials. Ideal for industries requiring lightweight yet durable solutions, they excel in applications ranging from industrial furnaces to aerospace systems, offering enhanced efficiency and longevity.

C/C Composite Heater

Alpasun is a leading manufacturer of custom-engineered carbon-carbon composite (CFC) heaters, specializing in high-temperature solutions for semiconductor, photovoltaic, and industrial furnace applications. With full in-house capabilities-from carbon fiber preform preparation and chemical vapor deposition (CVD) to precision machining-we deliver heaters with exceptional thermal stability, dimensional accuracy, and conductivity. Our vertically integrated R&D and production system ensures tailored solutions for extreme environments, including ultra-high-temperature crystal growth processes.

Contact us for more Technical Specifications and Quotations at contact@alpasun.com

Short fiber C/C Composite

Alpasun carries high quility short fiber C/C composite materials. Short-Fibre C/C Composites, also referred to as chopped, random-length, or random-weave C/C. This type of C/C material offers several advantages over traditional plain-woven C/C, including superior machinability, enhanced inter-laminar strength (reducing de-lamination significantly), and high density.