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Glass fiber needled felt is a felt-like material made from glass fibers through the needling process. It has many excellent properties and is widely used in various fields.
Characteristics
– **High-temperature resistance**: The main component of glass fiber needled felt is silicate, which is non-combustible, non-deforming, and non-brittle. It can withstand high temperatures up to 700°C. Its long-term operating temperature can reach 260°C, with the best operating temperature range being between 90°C and 220°C.
– **Corrosion resistance**: Glass fiber needled felt has good resistance to acids, alkalis, and other chemical corrosive media, making it suitable for corrosive environments.
– **Filtration performance**: The felt layer has a single-fiber, three-dimensional porous structure with high porosity. It offers low resistance to gas filtration, high filtration air velocity, and high dust removal efficiency. The recommended filtration air velocity should be less than 1.0 m/min.
– **Sound absorption and thermal insulation**: Glass fiber needled felt has excellent sound absorption properties, with a sound absorption rate of over 90%. Its thermal conductivity is between 0.2 and 0.040 kcal/mhr·°C, making it an excellent thermal insulation material.
– **Dimensional stability and strength**: Glass fiber needled felt is characterized by high strength, minimal dimensional change, and very low elongation and contraction rates. It has high tensile strength and a high elastic modulus, ensuring good rigidity.
– **Electrical insulation**: Glass fiber needled felt has excellent electrical insulation properties, making it a high-grade insulating material.
– **Low moisture absorption**: The moisture absorption rate of glass fiber needled felt is typically close to zero.
– **Lightweight and flexibility**: Compared to other insulating materials, glass fiber needled felt is lightweight and flexible. Installing it on machinery can reduce its weight and vibration load.
Applications
– **Industrial filtration**: Glass fiber needled felt is widely used in the purification of flue gas and dust recovery in industries such as steel, cement, power, and chemical. It is an ideal material for various bag-type dust collectors. It is also used in air filters to capture particles and fine dust to maintain clean indoor air.
– **Construction**: Glass fiber needled felt is used for roof, wall, and pipeline insulation in buildings. Its excellent thermal insulation properties meet the requirements of energy-saving construction. It can also be used as a sealing, sound-absorbing, filtering, and insulating material in special places.
– **Automotive**: Glass fiber needled felt is used in automotive interiors, roof linings, and sound insulation to enhance passenger comfort and safety. It is also used as the inner core of automotive mufflers for sound insulation and engine noise reduction.
– **Electronics**: Glass fiber needled felt is an important component in printed circuit boards (PCBs) and electronic devices. Its electrical insulation and high-temperature resistance properties ensure reliable performance and prevent short circuits.
– **Other applications**: Glass fiber needled felt can also be used for thermal and chemical pipeline insulation, as well as for thermal insulation in the walls of air conditioners, refrigerators, microwave ovens, dishwashers, and other household appliances. It can also be used in other situations where insulation, thermal insulation, fire resistance, sound absorption, and electrical insulation are required.