Polyimide Needle Felt Filter Cloth
Polyimide Needle Felt Filter Cloth, often referred to by the brand name P84, is a high-temperature resistant filtration material made from polyimide fibers.
Product Details
Polyimide Needle Felt Filter Cloth is a type of high-performance non-woven filter media made from polyimide fibers. Polyimide fibers are synthetic fibers known for their exceptional heat resistance and durability. The term “needle felt” refers to the manufacturing process in which barbed needles are used to interlock the fibers, creating a dense, felted material.
Key characteristics of Polyimide Needle Felt Filter Cloth include:
- High-Temperature Resistance: It can withstand continuous high temperatures, often up to 240 degrees Celsius or more, making it suitable for filtration in high-heat applications.
- Excellent Chemical Resistance: Polyimide fibers resist a wide range of chemicals, allowing the filter cloth to function in corrosive environments without degrading.
- Thermal Stability: The material maintains structural integrity and performance even when exposed to elevated temperatures.
- Efficient Filtration: The unique structure of polyimide fibers provides a high surface area for filtration, leading to high efficiency in capturing fine particulate matter.
- Good Mechanical Strength: The fibers are strong, which contributes to the durability and longevity of the filter cloth, even under mechanical stress.
- Low Shrinkage: Polyimide needle felt exhibits minimal shrinkage at high temperatures, which helps to maintain the shape and size of the filter bags.
- Ease of Dust Cake Release: The cloth’s surface properties facilitate the release of the dust cake during the cleaning cycles of the filtration system.
Polyimide Needle Felt Filter Cloth is commonly used in industries where hot gases and challenging chemical conditions are present. Applications often include baghouse filters in waste incineration, cement production, power generation, and various chemical processes. The outstanding properties of polyimide filter cloth make it a preferred choice for situations requiring long-term performance in harsh environments.
| Technical Parameters | ||||||
| Gram Weight (g/m²) | Thickness(mm) | Air Perm (m³/m².min) | Breaking Strength(N/20X5cm) | Elongation at Break(%) | ||
| Warp Direction | Weft Direction | Warp Direction | Weft Direction | |||
| 550 | 2.5 | 8-12 | ≥900 | ≥1200 | ≤25 | ≤40 |
| Continuous Temperature(°C) | Instantaneous Temperature(°C) | Acid Resistance | Alkali Resistance | Abrasion Resistance | Hydrolytic Stability | Post-Processing Method |
| 240 | 280 | Excellent | Good | Good | good | Singeing or Calendering or PTFE Soak or Heat Setting or Laminating |
Polyimide Needle Felt Filter Cloth, commonly referred to by the brand name P84, exhibits several features that make it highly suitable for use in industrial filtration systems, especially in applications involving high temperatures and aggressive chemical environments. Here are some of the notable features:
- High-Temperature Resistance: Polyimide filter cloth can continuously operate at temperatures up to around 240 degrees Celsius, making it appropriate for hot gas filtration.
- Chemical Stability: It possesses excellent chemical resistance to acids, alkalis, and organic solvents, ensuring it can perform in a wide range of chemical environments without significant degradation.
- High Filtration Efficiency: The unique leaf-shaped cross-section of P84 fibers increases the collection surface area, enhancing particle capture and improving filtration efficiency.
- Good Mechanical Properties: Polyimide fibers have high tensile strength and good abrasion resistance, which contribute to the durability of the filter cloth under mechanical stress.
- Thermal Stability: The material retains its structural integrity and resilience even when exposed to high temperatures over time.
- Minimal Shrinkage: The needle felt experiences low shrinkage at elevated temperatures, which is essential for maintaining the fit and efficiency of filter bags.
- Ease of Dust Cake Release: The surface properties of the fibers help to ensure that dust cakes are released easily during cleaning cycles, which can improve the operational lifespan of the filter media.
- Low Back Pressure: Due to its good air permeability, polyimide filter cloth can reduce the resistance to airflow, leading to lower energy consumption for the filtration system.
- Long Service Life: Thanks to its robustness and resistance to harsh conditions, polyimide filter cloth typically enjoys a longer service life compared to other filter materials.
These features make Polyimide Needle Felt Filter Cloth an excellent choice for dust collection systems in industries such as waste incineration, cement manufacturing, steel and metal processing, chemical production, and power generation, where filters are exposed to challenging operating conditions.