1. Definition and Characteristics

What is fiberglass needled mat? Fiberglass needled mat is a nonwoven reinforcement material made from continuous or chopped glass fibers that are opened, carded, and then interwoven and fixed using a needle-punching process. It contains no chemical binders and relies on physical means to maintain its fiber structure. Its main characteristics are as follows:

Uniform thickness: The needle-punching process ensures a consistent thickness and density distribution.

Excellent high-temperature resistance: It can operate continuously at temperatures around 450°C, with high-silica products capable of withstanding temperatures up to 1000°C.

Low thermal conductivity: It offers excellent thermal insulation.

Sound absorption and vibration reduction: The porous structure between the fibers provides excellent acoustic properties.

2. Advantages

Binder-free: It is environmentally friendly, heat-resistant, and does not release harmful substances.

Strong dimensional stability: The needle-punching process ensures that the felt resists delamination and shedding.

Flexible and customizable: It can be easily processed into various shapes.

Multifunctional performance: It provides thermal insulation, sound insulation, filtration, and reinforcement.

3. Applications

Thermal Insulation: Industrial pipelines, boilers, and kiln linings.

Fire Retardant: Building fireproofing, automotive fireproofing and thermal insulation.

Sound Insulation: Sound insulation for engine rooms, compressors, and industrial equipment.

Filter Material: High-temperature gas or liquid filtration media.

Composite Substrate: Combined with resin to create lightweight insulating composite panels.

4. Selection Guide

Fiber Type: E-glass fiber is commonly used; high-silica glass fiber can be used for demanding applications.

Thickness Range: Commonly 3–25mm; select based on thermal/sound insulation requirements.

Gram Weight (GSM): The higher the gram weight, the higher the density and thermal insulation performance.

Using Temperature: Select the appropriate temperature resistance grade based on the application environment.

5. FAQ

What is the difference between needled mat and chopped strand mat?

Chopped strand mat is formed by bonding rubber powder or latex and is primarily used as a reinforcing matrix. Needle felt is physically interwoven and does not contain a binder, making it more suitable for high-temperature insulation and filtration.

Can needled mat be directly compounded with resin?

Yes. Needle felt's porous surface allows for excellent bonding with resin and is often used in sandwich panels or as a reinforcement layer.

What is the temperature resistance of needled mat?

Ordinary E glass fiber needled mat has a temperature resistance of approximately 450°C, while high-silica needled mat can withstand temperatures exceeding 1000°C.

6. Summary

Glass fiber needled mat is an environmentally friendly, high-temperature resistant nonwoven material with excellent thermal and sound insulation properties. It is widely used in insulation, fire protection, noise reduction, and filtration, and can also serve as a matrix for composite materials, helping to achieve lightweight and high-performance properties. We are a Chinese fiberglass manufacturer and are a good choice if you are looking for high-quality needled mat. In addition to E glass fiber needled mat, we also offer high-silica needled mat. For more information, please contact us via email at annayu@169chem.net or WhatsApp: +86 18909016373.