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Fiberglass unidirectional prepreg is a tape-shaped pre-impregnated composite material manufactured by uniformly impregnating continuously aligned non-twist fiberglass fibers with professional resin system and then winding into rolls.
The fibers are arranged in a single direction without transverse weaving texture, featuring high fiber content and concentrated orientation. It allows precise control of lay-up angles and fiber directions. With uniform resin infiltration, controllable tackiness and excellent storage stability, the material supports room-temperature cutting and accurate lay-up. After thermal compression curing, it forms oriented reinforced composites with high strength, high modulus and low porosity, serving as a core industrial material for directional reinforcement and lightweight high-strength structural design.
| Fiber FAW | Prepreg Weight | Thickness |
|---|---|---|
| 200 g/m² | 333 g/m² | 0.21 mm |
| 300 g/m² | 500 g/m² | 0.31 mm |
| 400 g/m² | 667 g/m² | 0.42 mm |
| 600 g/m² | 1000 g/m² | 0.63 mm |
| Parameter | Value |
|---|---|
| Frozen Storage | -18℃ |
| Frozen Shelf Life | 12 months |
| Out-time Life (20~25℃ after thawing) | ≤14 days |
| Note | Do NOT re-freeze after thawing to avoid resin migration and loss of tackiness |
| Parameter | Value |
|---|---|
| Heating Rate | 0.5~2 ℃/min |
| Vacuum | ≥ -0.08 MPa |
| Consolidation Pressure | 0.3~0.5 MPa |
| Dwell | 120℃, 90~120 min |
| Cooling Rate | ≤3 ℃/min |
| Demold | below 60℃ |
Product Features and Performance
Concentrated unidirectional fiber orientation delivers excellent longitudinal mechanical properties. Its tensile strength and modulus are far superior to woven fiberglass prepreg of the same specification, with ultra-strong directional load-bearing capacity.
No weaving wrinkles or interweaving fiber loss ensures high fiber utilization rate. The cured product features extremely low porosity and excellent structural compactness.
The lay-up angle and thickness can be precisely designed as required, flexibly adapting to axial, transverse and multi-directional force-bearing structures to optimize structural mechanical performance to the maximum.
Wide resin system compatibility, supporting customized formulas such as medium-temperature curing, flame retardant, temperature resistance and humidity resistance to meet diverse working condition requirements.
Excellent electrical insulation, chemical corrosion resistance, aging resistance, moisture and mildew resistance with stable electrical performance, suitable for electrical insulation and outdoor working conditions.
Uniform thickness and high flatness enable neat cutting and convenient lay-up operation. The molded products feature high dimensional accuracy and stable batch consistency.
High process compatibility with autoclave, vacuum bag, compression molding, rolling pipe and other molding processes, ideal for mass production of high-precision and high-strength structural parts.
Outstanding cost performance with lower cost than carbon fiber unidirectional prepreg, acting as a cost-effective alternative for industrial high-strength lightweight structures.
Applications
Mainly applied in fields with strict requirements for unidirectional strength, structural stiffness and dimensional accuracy, including high-strength industrial structural parts, wind turbine blade main beams and reinforcement layers, high-voltage electrical insulation pipes and rods, load-bearing structural parts for rail transit, new energy energy-storage reinforcement components, pressure vessel winding layers, lightweight construction machinery parts, high-strength stress-bearing sports equipment components, ship load-bearing keels and reinforcement structures, high-precision equipment support parts, and aerospace secondary load-bearing structural parts.
