Key Features & Benefits
Low-shrink, low-profile formulation
Minimises mould distortion and dimensional movement
Rapid tooling performance
Faster mould build cycles and reduced downtime
Thixotropic handling characteristics
Excellent control in hand lay-up applications
Improved surface stability
Reduces print-through and surface distortion
Standard MEKP catalysed
Easy processing with conventional tooling practices
Matched Crestamould system
Optimised compatibility with Crestamould tooling gelcoats
Applications
Crestamould® RTR 4010PA is recommended for:
FRP mould backing laminates
Rapid tooling manufacture
Large or complex mould structures
Low-distortion tooling systems
Hand lay-up tooling applications
Properties (Uncured)
Viscosity @ 25 °C (ICI): 4.5–5.5 poise
Specific Gravity: ~1.35
Volatile Content: 25–30%
Gel Time @ 25 °C (1% MEKP): 25–34 minutes
Shelf Life: ~5 months (≤20 °C)
Mechanical & Thermal Properties (Cured)
(Glass content ~28%, post cured)
Tensile Strength: ~114 MPa
Tensile Modulus: ~8075 MPa
Elongation at Break: ~2%
HDT (Base Resin): ~99 °C
HDT (Filled System): ~63 °C
Processing & Application
Crestamould® RTR 4010PA is supplied ready to use and requires only the addition of MEKP catalyst.
Recommended catalyst: 1% Butanox® M-50 or equivalent
Minimum workshop temperature: 18 °C (20–24 °C preferred)
Recommended reinforcement:
Minimum 3 layers of 450 gsm CSM applied in a single operation
The resin undergoes a visible colour change as cure progresses, assisting process control.
Post curing is recommended to maximise mechanical properties and long-term mould performance.
Packaging & Storage
Packaging: 25 kg and 225 kg containers
Storage:
Store between 5–25 °C in original, unopened containers.
Protect from freezing and direct sunlight.
ATL Technical Support
ATL Composites provides tooling resin selection advice, laminate design support, and cure optimisation guidance to ensure Crestamould® RTR 4010PA delivers reliable, dimensionally stable tooling performance.
