Details
Polyurethane PU Coated Fiberglass Cloth
Polyurethane (PU) Coated Fiberglass Cloth is precision-manufactured using premium E-glass filament yarns woven into a high-strength fiberglass base cloth, followed by single-sided or double-sided coating with high-performance polyurethane (PU) resin. The final product is colored with aluminum pigments (standard silver) to enhance UV resistance and thermal reflection. Unlike thermoplastic coatings, polyurethane forms a thermosetting elastomeric layer. This combination integrates the mechanical robustness of E-glass fiberglass with the versatile protective properties of PU coating, delivering a cost-effective solution for fire protection, insulation, and abrasion resistance across industries.
Identification:
Overall Thickness (mm) | 0.45 | 0.66 | 0.75 | 0.80 | 1.50 |
Area Weight (g/m²) | 440/490 | 690/710 | 640/780 | 800 | 1080/1130 |
Width (mm) | 1000, 1200, 1500 | ||||
Temperature Resistance | Up to 180°C | ||||
Tensile Strength | 2500-8000 N/50mm (warp and weft) | ||||
Elongation at Break | 300-600% | ||||
Hardness (Shore A) | 70-95 (adjustable via formulation) | ||||
Water Absorption | <2% by weight (24h immersion) | ||||
Water Vapor Transmission | 5-20 g/m²/24h (depending on thickness) | ||||
What are the key features of PU coated fiberglass cloth?
Base Material: High-strength E-glass fiberglass cloth (excellent tensile strength and dimensional stability).
Coating Advantage: High-performance PU resin coating, uniform adhesion (no peeling), waterproof, and abrasion-resistant.
Thermal Performance: Short-term temperature resistance up to 180°C; aluminum pigment enhances UV and heat reflection.
Protective Properties: Inherent flame retardancy, oil/solvent resistance, allergen-free, and anti-fray design.
Mechanical Flexibility: Balanced flexibility for easy wrapping, folding, and installation on curved/irregular surfaces.
Sealing Ability: Tight weave with PU coating, effective at blocking dust, moisture, and minor chemical splashes.
Safety: Allergen-free composition; no harmful emissions under normal use conditions.
What are the advantages and benefits of PU coated fiberglass cloth?
Compared To: | Advantages of PU Coated Fiberglass |
PVC Coated | Superior abrasion resistance (5-10x better), better low-temperature flexibility, no plasticizer migration, better aging characteristics, more environmentally friendly formulations available. |
Neoprene Coated | Better abrasion resistance, wider color range (including clear), better UV stability (aliphatic PU), less dense, better hydrolysis resistance (polyether PU). |
Silicone Coated | Far superior abrasion and tear resistance, better tensile strength, more cost-effective for moderate temperature applications, easier fabrication and bonding. |
Uncoated Fabrics | Waterproof, UV protected, sealed edges, dramatically improved durability and wear resistance. |
What applications is PU coated fiberglass cloth used for?
PU Coated Fiberglass Cloth is a versatile, cost-effective solution for fire protection, insulation, and protection across industries, including:
-Fire Safety & Protection: Welding blankets (sparks and molten metal protection), fire doors/seals, fireproof curtains for commercial buildings, and passive fire barriers in HVAC systems.
-Industrial Insulation: General insulation wrapping for pipes, valves, and machinery; expansion joints for industrial ducts and boilers; thermal covers for equipment storage.
-Welding & Metalworking: Spark shields for welding stations, heat barriers for cutting operations, and protective covers for workpieces during fabrication.
-Construction & Building: Temporary fire protection during construction, dust/moisture barriers for unfinished buildings, and fire-rated curtain walls.
-Marine & Automotive: Moisture-proof covers for marine equipment, heat shields for automotive underhood components, and corrosion-resistant wraps for ship pipelines.
-Workshop & Factory: Equipment covers (dust/waterproof), floor protection mats (abrasion-resistant), and oil-resistant barriers for mechanical workshops.
-Electrical & Electronics: Insulation for low-temperature electrical components, moisture-proof covers for outdoor electrical boxes, and dust barriers for electronic manufacturing.
-General Purpose: Temporary shelters, moving blankets (abrasion-resistant), and protective wrapping for goods during transportation.
How to store and handle PU coated fiberglass cloth?
-Store in a clean, dry, and well-ventilated area with relative humidity % and temperature °C.
-Avoid direct sunlight (prevents PU coating aging) and high humidity (avoids moisture absorption).
-Keep the original packaging sealed when not in use to protect against dust, moisture, and contamination.
-For “used” material: Handle with care to minimize fiberglass dust—wear protective gloves and masks if necessary; avoid contact with sharp objects to prevent coating damage.
-Stack neatly (max height ≤1.5m) to avoid fabric deformation or coating cracking.
FAQ
Q1: How does PU compare to PVC for tarpaulins and covers?
A: PU offers 5-10x better abrasion resistance, superior low-temperature flexibility (won't stiffen in cold), and no plasticizer migration (won't become brittle over time). PVC is typically more cost-effective and has slightly better flame retardancy. For heavy-use applications or extreme environments, PU performs better and lasts longer.
Q2: What is the expected outdoor service life of PU coated fiberglass cloth?
A: For standard aromatic PU: there are 5-8 years of service life with moderate UV exposure. The following factors would affect service life of PU coated cloth: UV exposure, mechanical abrasion, cleaning frequency, environmental conditions.
Q3: Can PU coated fiberglass cloth withstand high temperatures?
A: No. High temperature a limitation of PU compared to silicone or PTFE:
-Softens above 80°C continuous, 100°C short-term
-Not suitable for high-temperature applications like exhaust wraps
-Better than PVC for moderate temperature applications
For high temperatures, consider silicone-coated alternatives.
Q4: What's the difference between thermoplastic (TPU) and thermoset PU?
A:
-Thermoplastic PU (TPU): Can be melted and re-formed. Easier to HF weld. Slightly lower temperature resistance.
-Thermoset PU: Cross-linked during curing. Cannot be re-melted. Better chemical/heat resistance. More common for industrial fabrics.
Q5: How does PU coated fiberglass cloth handle chemical exposure?
A:
-Excellent resistance: Water, oils, greases, alcohols, dilute acids/alkalis
-Good resistance: Aliphatic hydrocarbons, vegetable oils
-Poor resistance: Strong acids/bases, ketones, chlorinated solvents, concentrated oxidizing agents
-Always test compatibility for specific chemicals
Q6: How do I choose between polyester and polyether PU?
A:
-Choose polyester PU for: Maximum mechanical properties, oil/chemical resistance, lower cost
-Choose polyether PU for: Hydrolysis resistance (constant wet environments), low-temperature flexibility, fungal resistance
-Marine applications typically use polyether PU for better hydrolysis resistance
Q7: How does PU coated fiberglass cloth cost compare to other coated fabrics?
A: Generally:
-More expensive than PVC (20-50% premium)
-Comparable to neoprene (slightly less expensive in some cases)
-Less expensive than silicone or PTFE
-Higher initial cost but often lower lifetime cost due to longer service life
Q8: Is PU coated fiberglass cloth fully waterproof?
A: Yes, the PU coating provides complete waterproof protection. It is ideal for outdoor use or humid environments.
Q9: What is the difference between single-sided and double-sided coated cloth?
A: Single-sided coated cloth is lighter and more cost-effective for basic protection; double-sided coated cloth offers enhanced durability, all-around protection, and is better suited for heavy-duty or critical applications.
