The glass fiber needle-punched filtration material is a high-temperature filtration material with a rational structure and excellent performance. Primarily made of glass fibers, it is formed into a felt-like nonwoven fabric through a needle-punching process that intertwines the fibers. Below is a detailed introduction to this material:
I. Material Composition and Manufacturing Process
Material Composition: It uses glass fibers as the raw material, typically selecting E-glass fibers due to their superior chemical resistance and stability.
Manufacturing Process: After combing, the chopped glass fiber mat undergoes needle-punching, a mechanical process that intertwines fibers within the mat layers and between the mat fibers and reinforcing glass fiber base cloth, reinforcing the fiber network to create the final product.
II. Key Characteristics
High Temperature Resistance: The glass fiber needle-punched filtration material exhibits excellent high-temperature resistance, typically enduring temperatures up to 700°C without deformation or embrittlement.
Corrosion Resistance: Apart from hydrofluoric acid and high-temperature strong alkalis, it demonstrates high chemical stability against other media, enabling prolonged use in corrosive environments without performance degradation.
High Strength: The needle-punching process tightly intertwines fibers, resulting in high mechanical strength and abrasion resistance.
High Porosity: The fibers form a single-fiber, three-dimensional microporous structure with a high porosity, reducing gas filtration resistance and making it an efficient high-temperature filtration material.
Sound Absorption and Shock Absorption: The material effectively dampens noise and vibrations due to its good sound absorption and shock absorption properties.
Excellent Insulation: With its high heat resistance, mechanical strength, and chemical stability, it is an optimal insulation material.
Excellent Resilience: Containing numerous fixed air pockets, it exhibits excellent resilience, unaffected by impacts or vibrations.
III. Application Areas
The glass fiber needle-punched filtration material finds widespread use in various high-temperature filtration scenarios, including:
Industrial Sector: For smoke purification and dust recovery in industries such as carbon black, steel, non-ferrous metals, chemicals, incineration, and high-temperature smoke filtration in various industrial furnaces.
Automotive Industry: Used for sound insulation, sound absorption, shock absorption, and flame retardancy in automobiles.
Construction Industry: For thermal insulation between layers of color-coated steel plates and wooden structures, as well as for insulating thermal and chemical pipelines.
Household Appliances: Thermal insulation of appliance panels in air conditioners, refrigerators, microwaves, dishwashers, and other household appliances.
IV. Physical Properties
The physical properties of glass fiber needle-punched filtration materials vary by specific products and manufacturers but generally include:
Weight Per Unit Area (Grammage): The mass per unit area, typically expressed in g/m².
Thickness: The thickness of the material, usually measured in mm.
Tensile Breaking Strength: The maximum force the material can withstand during tension, often expressed as N/50mm.
Air Permeability: The material's ability to allow gas to pass through, typically measured in m³/m²·min.
Temperature Resistance: The highest temperature the material can withstand, usually indicated in °C.
V. Precautions
During use, attention should be paid to controlling the filtration velocity and operating temperature to ensure optimal filtration efficiency and material longevity. Additionally, the material should be protected from moisture and compression during transportation and storage to prevent performance degradation.
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