Qingdao Wanguo Sanchuan Fiber Technology Co., Ltd
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Glass Fiber Needle Felt : High Temperature Insulation For Industrial And Automotive Applications
Glass Fiber Needle Felt is a non-woven composite material engineered for exceptional thermal insulation, sound absorption, and mechanical durability. Composed of inorganic glass fibers bonded through a needle-punching process, it offers a lightweight yet robust solution for high-temperature environments. This product is resistant to corrosion, chemical degradation, and thermal shock, making it ideal for applications demanding reliability in extreme conditions, such as automotive exhaust systems, industrial furnaces, and aerospace components.
| Step | Description |
|---|---|
| Material Preparation | Glass fiber rovings are cut into specific lengths (1.5–3 inches) for uniform distribution. |
| Binder Application | Fibers are bonded using polyester, epoxy, or PTFE binders for structural integrity. |
| Needle Punching | Barbed needles mechanically interlock fibers to form a dense, non-woven mat. |
| Curing | Heat treatment activates binder curing, ensuring dimensional stability. |
| Quality Control | Parameters like weight (30–500 gsm), thickness (2–25 mm), and thermal resistance are tested. |
Storage: Keep in dry, cool environments (15–35°C) away from humidity and direct sunlight.
Temperature Limits: Operate within -40°C to 850°C (short-term exposure up to 1000°C for high-grade variants).
Chemical Compatibility: Resistant to oils, fuels, and solvents; avoid contact with strong alkalis or acids.
Handling: Wear PPE (gloves, masks) to prevent fiber irritation; use sharp tools for cutting.
| Parameter | Standard GNF | High-Temperature GNF |
|---|---|---|
| Basis Weight | 30–500 gsm | 800–1000 gsm |
| Thickness | 2–25 mm | 5–25 mm |
| Tensile Strength | ≥40 N/50 mm (MD) | ≥60 N/50 mm (MD) |
| Thermal Conductivity | 0.035 W/m·K (room temp) | 0.025 W/m·K (850°C) |
| Flammability | Self-extinguishing | Non-combustible |
| Certifications | ISO 9001, RoHS, REACH | ISO 9001, UL 94 |
Automotive: Exhaust system insulation, engine heat shields, and catalytic converter components.
Industrial Equipment: Boiler insulation, furnace liners, and pipeline thermal barriers.
Aerospace: Engine nacelle insulation and aircraft cabin noise reduction.
Construction: Fire-resistant building panels, roofing insulation, and HVAC systems.
Energy: Wind turbine nacelle cooling and geothermal system protection.
Household Appliances: Microwave oven liners, dishwasher heat guards, and air conditioning units.
