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Fiberglass Needled Mat is a high-performance non-woven porous sheet material composed of glass fiber filaments with varied sizes and configurations. Through a sophisticated needle-punching process on specialized conveyor belts, the glass fiber filaments interlock tightly to form a monolithic blanket with the required thickness. No additional chemical binders are used, ensuring the material retains its inherent properties while achieving excellent internal crosslinking strength and structural integrity.

Unlike chemically bonded mats (like Chopped Strand Mat), the fibers are physically interlocked by thousands of barbed needles that punch vertically through the fiber web, creating a strong, cohesive, and binder-free structure, while achieving excellent internal crosslinking strength and structural integrity.

Fiberglass Needled Mat is resistant up to 600 oC short-term working temperature and 550oC continuous working temperature. Fiberglass Needled Mat is widely used for thermal insulation materials in the pipeline coating industry, filtration materials in coom, steel, nonferrous metal, chemical industry, as well as automotive shipbuilding fields due to its excellent properties of easy cutting, sounds absorption, and heat resistance. 

Identification:

What are the key features of fiberglass needled mat? 

Needle-punched Integral Structure: Fibers are mechanically interlocked via needle punching, eliminating the need for binders. This structure enhances durability and avoids performance degradation caused by binder aging or volatilization at high temperatures.

Controlled Porosity: Uniform porous structure with adjustable porosity (typically 80%-90%) enables excellent air permeability, filtration efficiency, and thermal insulation performance.

Thermal Stability: Exceptional resistance to high temperatures, maintaining structural stability without significant deformation under rated temperature conditions.

Mechanical Toughness: Good tensile strength and tear resistance, capable of withstanding moderate mechanical impact and wind load during construction and application.

Chemical Inertness: Resistant to most acids, alkalis, and organic solvents (except for strong alkalis and hydrofluoric acid), ensuring long-term service in harsh chemical environments.

Flexible Processability: Easy to cut, tailor, and install, adapting to complex shapes of equipment, pipelines, and components without generating fiber breakage or dust.

How many types of fiberglass needled mat are there?

Fiberglass Needled Mats are classified based on glass fiber type, each optimized for specific application scenarios:

E glass and high silica glass needled mats are our regular products. Custom products are available upon request.

What are the advantages and benefits of fiberglass needled mat?

Compared with traditional insulation and filtration materials (such as woven glass cloth, mineral wool, and polyester non-wovens), Fiberglass Needled Mat offers unique competitive advantages:

Superior Thermal Insulation: Low thermal conductivity ensures efficient heat retention, reducing energy consumption by 15%-30% in industrial insulation scenarios compared to mineral wool.

Minimal Thermal Shrinkage: Thermal shrinkage rate ≤1% at continuous working temperature, avoiding material deformation and insulation failure caused by temperature cycles.

Exceptional Chemical Stability: Resists erosion from most industrial chemicals, ensuring a service life of 3-5 years (2-3x longer than polyester filters) in harsh environments.

Strong Mechanical Performance: High tensile strength (≥150N/50mm) and wind load resistance, suitable for outdoor and high-airflow applications without damage.

Efficient Filtration: Filtration speed twice that of woven filter materials, with sub-micron particle capture capability, reducing equipment maintenance frequency.

Cost-Effective Total Ownership: Competitive initial cost combined with long service life, low maintenance requirements, and energy savings, lowering overall operating costs.

Environmentally Friendly: Composed of inorganic glass fibers, non-toxic, non-volatile, and recyclable.

Easy Installation: Flexible and easy to cut, can be installed with common tools, reducing construction time and labor costs.

What applications is fiberglass needled mat used for?

A. Composites Manufacturing:

Thermoplastic Composites: The primary reinforcement for Glass Mat Thermoplastics (GMT) and Long Fiber Thermoplastics (LFT) compression molding (e.g., automotive underbody shields, battery trays, load floors).

Thermoset Composites: Used in Resin Transfer Molding (RTM) and Vacuum Infusion for marine parts, truck panels, and wind energy components where preform stability is critical.

Sheet Molding Compound (SMC): As a carrier mat for continuous strand or unidirectional rovings in high-strength SMC.

B. High-Temperature Filtration:

Baghouse Filter Bags: For coal-fired power plants, cement kilns, steel mills, and waste incineration.

Catalyst Support Substrate: In catalytic converters and industrial catalytic processes.

C. Thermal & Acoustic Insulation:

Industrial Insulation: Wrapping for pipes, furnaces, and boilers.

Aerospace & Automotive: Heat shields, firewall insulation, exhaust wraps.

Acoustic Barriers: In appliances, automotive, and industrial equipment.

D. Other Industrial Uses:

Gasketing and Sealing: As a base material for high-temperature gaskets.

Geotextiles: For soil stabilization and drainage (special grades).

Battery Separator Mats: In lead-acid batteries.

How to store and handle fiberglass needled mat? 

Store in original packaging before use to prevent moisture absorption, contamination, or fiber damage.

Maintain storage temperature between 15°C and 35°C, avoiding extreme cold (below 0°C) or high temperature (above 40°C) environments.

Control relative humidity in the storage area at 35%-65%, keeping the material away from water sources, damp walls, or direct ground contact (use pallets for elevation).

Store in a clean, dust-free space, avoiding contact with oil, chemicals, or sharp objects.

Stack height should not exceed 1.5 meters to prevent compression deformation of the bottom layers.

FAQ

Question 1: What is the filament diameter range of your fiberglass needled mat, and how does it affect performance?

A: The filament diameter typically ranges from 6μm to 17μm. Thinner filaments (6-10μm) offer higher filtration precision and better thermal insulation but slightly lower tensile strength; thicker filaments (12-17μm) excel in mechanical performance and are more suitable for high-wind or heavy-load applications.

Question 2: Do you offer fiberglass needled mat that can withstand temperatures above 1000°C?

A: Yes. Our high-silica fiberglass needled mat (SiO₂ content ≥96%) can sustain continuous working temperatures up to 1000°C and short-term temperatures up to 1200°C, ideal for metallurgical and ceramic kiln applications. For temperatures above 1200°C, we can provide customized alumina-silica composite needled mats—please contact us for details.

Question 3: How does the filter capability of fiberglass needled mat compare to other filter materials?

A: Its filtration speed is twice that of traditional woven glass cloth, and it achieves up to 99.9% removal efficiency for particles ≥0.3μm. Compared to polyester non-wovens, it has better high-temperature resistance (polyester max temp ~150°C) and chemical stability, making it suitable for high-temperature industrial dust collection.

Question 4: Is fiberglass needled mat resistant to chemical corrosion, such as acids and alkalis?

A: It depends on the glass fiber type. E-Glass mat resists weak acids and alkalis but is not suitable for strong alkalis (pH>12) or hydrofluoric acid. C-Glass mat is specially formulated for enhanced chemical resistance, withstanding 5% sulfuric acid and 10% sodium hydroxide solutions for long-term use. For strong corrosive environments, we recommend our fluorine-coated fiberglass needled mat.

Question 5: Can Fiberglass Needled Mat be used for hand lay-up?

A: No. It is not the preferred choice. Its lofty structure requires significantly more resin to wet out (high resin uptake) and is harder to "roll out" air bubbles compared to Chopped Strand Mat. It can be used for thick laminate builds in infusion, but for manual lay-up, Chopped Strand Mat is far more efficient.

Question 6: Does "binder-free" mean it has no sizing?

A: No. The glass fibers still have a silane-based sizing/coupling agent applied during filament formation. This sizing is critical for adhesion to the resin matrix. "Binder-free" refers to the absence of the secondary chemical binder used to hold CSM together.

Question 7: How does "punch density" affect performance of fiberglass needled mat?

A: Low Punch Density: Higher loft, better insulation, higher permeability, softer hand, but lower mechanical integrity.

High Punch Density: Denser, thinner, stronger mat, better preform stability, but lower permeability and resin flow speed.