E-glass Chopped Strand Mat 300 g/m²
Key Features
- Fast resin wet-out with UPR/VE
- Excellent conformability to complex molds
- Smooth surface against gelcoat — blocks weave print-through
- Emulsion or powder binder selectable by process
- Low fuzz and clean handling on production floors
E-glass Chopped Strand Mat 300 g/m² is a non-woven mat of 50 mm chopped E-glass strands held in random in-plane orientation by an emulsion or powder binder. Areal weight is 300 g/m² (±5%) with filament diameter 11–13 μm. The mat is supplied in 1000 mm and 1250 mm widths and is the standard tie-coat and decorative reinforcement for hand layup of marine FRP, sanitary ware, and architectural GRP.
Two binder variants cover most applications: emulsion-bound mat dissolves in styrene-containing UPR in roughly 60 s and is preferred for spray-up and fast hand layup; powder-bound mat holds together longer (90–120 s) and is preferred for vacuum-bag layup and slow-cure projects. The mat conforms to complex molds, wets out quickly with UPR/VE resin, and provides a smooth surface against gelcoat — making it the standard layer between gelcoat and heavier woven roving in marine FRP laminates. Moisture is held to ≤0.2%.
Specifications
| Parameter | Value |
|---|---|
| Width | 1000 / 1250 mm |
| Moisture | ≤0.2% |
| Binder Type | Emulsion (high solubility) or Powder (low solubility) |
| Chop Length | 50 mm |
| Areal Weight | 300 g/m² (±5%) |
| Filament Diameter | 11–13 μm |
| Solubility in UPR | Emulsion ~60 s @ 25°C / Powder 90–120 s |
| Resin Compatibility | UPR, VE |
Applications
FAQ
Emulsion CSM dissolves in styrene-containing UPR in ~60 s and is preferred for spray-up and high-volume hand layup where fast wet-out drives cycle time. Powder CSM holds together longer (90–120 s) and is preferred for vacuum-bag layup, slow-cure projects, and parts that require operator handling time before resin is applied. Emulsion is cheaper and more common; powder is specified when process control demands it.
Direct Contact
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