English
- 中文
- English
Graphite hard felt
Product Name: Graphite Hard毡 Abstract
Graphite hard felt is an advanced high-temperature insulation material. It is made from high-quality carbon fibers and is processed through forming, curing, and high-temperature graphitization processes. This material exhibits excellent high-temperature resistance, chemical stability, and insulation sealing properties, and can maintain structural integrity and outstanding performance even in extreme environments up to 2250°C. Graphite hard felt has the characteristics of high purity, adjustable density, and high strength, making it an ideal insulation and heat preservation material for high-temperature equipment, vacuum furnaces, semiconductor manufacturing, and new energy fields.
Product Details
Graphite hard felt is an advanced composite material formed by crushing carbon fibers, adding binders, shaping and curing, and undergoing a graphiteification process at a temperature above 2400°C. Depending on the length of the fibers, it can be divided into long-fiber hard felt and short-fiber hard felt. The density of hard felt is generally higher than that of soft felt, and it has better mechanical strength and structural stability, while retaining excellent thermal insulation properties.
The graphite hard felt is produced using the density gradient structure process and undergoes various surface processing or purification treatments to enhance its strength and improve its performance. This material can maintain stable chemical structure and physical properties even at temperatures of 2200°C or 3000°C, demonstrating outstanding thermal stability.
Product Parameters (Specifications)
Parameter Categories
Specific indicators
Technical Specifications
Manufacturing process
Molding method
Injection molding / Compression molding
Equipment
Forming machine, temperature controller, demolding system, dehumidifier
Processing temperature
Graphitization at temperatures above 2400°C
Material composition
Base material
High-quality carbon fiber / PAN-based carbon fiber
Adhesive
Phenolic resin or other high-temperature adhesives
Graphite content
≥99.9%
Physical properties
Density
0.16 - 0.4 g/cm³ (customizable)
Thermal conductivity
0.15 - 0.20 W/(m·K) (at 1000°C)
Porosity
85 - 90%
Ash content
≤ 0.1%
Mechanical properties
Bending strength
Longitudinal ≥ 2.3 Mpa, Transverse ≥ 1.8 Mpa
Compressive strength
Changes according to different densities
Elastic modulus
High modulus
Thermal properties
Long-term usage temperature
2200-3000°C
Coefficient of thermal expansion
2.5 ± 0.5% (up to 3000°C)
Thermal stability
Excellent, resistant to thermal shock
Surface treatment
Surface finish
Can be customized according to your needs
Handling method
Mechanical polishing, coating, veneering, etc.
Application fields
Main industries
High-temperature furnace, vacuum system, semiconductor, new energy
Product features and applications
Core features
The outstanding high-temperature resistance graphite hard felt can be used for a long time at extreme temperatures of up to 2250°C or even 3000°C without any performance degradation, far exceeding that of traditional insulation materials. Its excellent thermal stability and thermal shock resistance make it the preferred material for high-temperature environments.
2. Excellent heat insulation and preservation performance Graphite hard felt has an extremely low thermal conductivity and a high porosity, which can effectively prevent heat conduction and heat radiation, providing outstanding heat insulation and preservation effects. It performs particularly well in vacuum furnaces and inert environments.
3. Outstanding chemically stable materials possess excellent resistance to chemical corrosion, being able to withstand the erosion of strong corrosive chemicals for a long time. They remain stable in acidic and alkaline environments, ensuring long-term reliable usage.
4. Compared with traditional fire-resistant materials, graphite hard felt has a lower density but higher strength. It can reduce the weight by 30-50%, while maintaining structural stability and load-bearing capacity.
5. Although it is called a 'hard' felt, it still maintains a certain degree of flexibility. It can adapt to complex shapes and achieve excellent sealing results, especially suitable for thermal insulation sealing of irregular structures.
Application fields
In the semiconductor industry, the thermal field systems used for crystal growth equipment such as single-crystal silicon furnaces, polycrystalline silicon furnaces, and sapphire furnaces provide a high-purity and stable insulation environment, thereby improving product quality and yield.
2. The high-temperature furnace system is applied to the insulation and heat preservation of various industrial furnaces and kilns, such as vacuum furnaces, atmosphere furnaces, and sintering furnaces, significantly reducing energy consumption and extending the service life of the furnace bodies.
3. New energy manufacturing is used for high-temperature insulation in the production processes of new energy products such as lithium batteries and photovoltaic equipment, ensuring process stability and product consistency.
4. In the aerospace field, it is used for the thermal insulation protection of high-temperature components in aircraft engines and spacecraft propulsion systems, reducing weight and enhancing reliability.
5. In the chemical industry, it is used for insulation and sealing of equipment such as chemical reactors and high-temperature pipelines. It has strong corrosion resistance and a long service life. Core advantage
The extremely high temperature resistance allows it to withstand temperatures ranging from 2200 to 3000°C for long-term use. In short-term use, it can withstand even higher temperatures, far exceeding that of traditional insulation materials.
2. The graphite content is highly pure and low in pollution, with a content of ≥ 99.9%. The ash content is extremely low, and it will not cause pollution in high-temperature environments. It is suitable for high-purity process applications.
3. Excellent heat insulation effect. The thermal conductivity is as low as 0.15 - 0.20 W/(m·K), with high insulation efficiency, which can significantly reduce energy consumption.
4. Excellent mechanical strength means higher flexural strength and compressive strength, with a stable structure that is not prone to deformation or damage.
5. Resistant to chemical corrosion It can withstand the erosion of strong acids, strong alkalis and other corrosive media, and is suitable for various harsh environments.
6. The lightweight design has a low density and is lightweight, which can reduce the overall load of the equipment and save installation costs.
7. Highly customizable: The density, shape, size and surface treatment can be adjusted according to customer requirements, meeting different application scenarios.
8. The production process is environmentally friendly and energy-efficient, with low energy consumption and recyclable materials, meeting the requirements of green environmental protection.
Technical Capability Details
Material Technology
We use high-quality PAN-based carbon fibers and asphalt-based carbon fibers as raw materials. The fiber diameter is controlled within the range of 7.0 - 12.5 μm, with an average diameter of 10.5 ± 3.2 μm. This ensures that the material has a uniform microstructure and stable thermal properties.
Process Technology
By adopting the advanced density gradient structure process, through precise control of the forming pressure, temperature and binder content, the density distribution can be accurately controlled. The product density can be adjusted within the range of 0.16 - 0.4 g/cm³ according to the requirements.
Surface treatment techniques include various methods such as mechanical polishing, coating, and veneering. Different levels of smoothness and functions can be provided according to customer requirements. Quality Control
We strictly adhere to the ISO9001:2015 quality management system. From raw material inspection to production process control and final product testing, we implement strict quality control throughout the entire process to ensure the stability and consistency of the products.
The inspection items include:
Density test
Thermal conductivity test
Bending strength test
Thermal expansion coefficient test
Chemical stability test
High-temperature long-term usage performance test
Research and development capabilities
We have a professional R&D team and advanced production equipment, and can conduct customized development according to the special needs of customers. Currently, we have obtained several national patents and have profound technical accumulation in the field of graphite hard felt.
Application areas presentation
Semiconductor industry
The thermal field system for single-crystal silicon furnaces and polycrystalline silicon furnaces provides a high-purity and stable insulation environment, improving the quality of crystal growth and the yield of finished products.
Photovoltaic industry
Applied to equipment such as polysilicon ingot furnaces and slicing machines, it ensures stable production processes and enhances the conversion efficiency of solar cells.
Vacuum furnace application
Used for thermal insulation and heat preservation of the vacuum furnace, it significantly reduces energy consumption and extends the service life of the furnace body. It is suitable for various heat treatment processes.
New Energy Manufacturing
It is used in processes such as lithium battery electrode sintering and separator baking to ensure uniform temperature and process stability. Aerospace and Aviation
Used for heat insulation protection of high-temperature components such as aircraft engines and combustion chambers, reducing weight and improving aircraft performance.
Chemical equipment
It is used for insulation and sealing of equipment such as chemical reactors, high-temperature pipelines and valves. It has strong corrosion resistance and a long service life. Frequently Asked Questions Answered
Q1: What is the temperature range for the use of graphite hard felt? A1: The long-term operating temperature of graphite hard felt can reach 2200 - 3000°C, and it can withstand higher temperatures in the short term. The specific temperature range depends on the density of the product and the degree of graphiteification.
Q2: Can graphite hard felt be used in a vacuum environment? A2: Yes, graphite hard felt is particularly suitable for vacuum and inert gas environments. Its low outgassing characteristics and excellent heat insulation properties make it an ideal choice for vacuum furnace systems.
Q3: What is the thermal conductivity of graphite hard felt? A3: At 1000°C, the thermal conductivity of graphite hard felt is typically 0.15 - 0.20 W/(m·K). The specific value varies depending on the density and manufacturing process.
Q4: Is graphite hard felt resistant to chemical corrosion? A4: Yes, graphite hard felt has excellent resistance to chemical corrosion. It can withstand the erosion of strong acids, strong alkalis and other corrosive media for a long time and is suitable for use in various harsh environments.
Q5: What is the density range of graphite hard felt? A5: The density range of graphite hard felt is typically 0.16 - 0.4 g/cm³. Customers can customize it according to their specific requirements.
Q6: Is the installation of graphite hard felt complicated? A6: Graphite hard felt can be pre-made into various shapes according to customer requirements, or it can be cut and shaped as needed based on on-site requirements. The installation is very convenient. Although it is called 'hard' felt, it still retains a certain degree of flexibility and can fit complex surfaces quite well.
Copy product links
Long by picture save/share
INQUIRY
Add Successfully
INQUIRY
Add Successfully
SIMO (TIANJIN) TECHNOLOGY CO., LTD.
Telephone: 136-4212-5292
Q Q:2767728703
Postal Code: 300350
Email: smkj889@163.com
思摩（天津)科技有限公司
电话:13642125292
传真:022-8861-6121
Q Q:2767728703
邮编:300350
邮箱:smkj889@163.com
点击右上角
分享给朋友吧
思摩（天津)科技有限公司 版权所有| 粤ICP备00000000号
Copyright © Simo (Tianjin) Technology Co., Ltd.
