Urethane Acrylate Resin Crestapol 1261, High Fire Resistance

Crestapol® 1261 is a high performance low viscosity urethane acrylate type resin to work with Carbon Fibre, Glass or any other reinforcement types, suitable for infusion, RTM and similar processes at room temperature.

Crestapol® 1261 produces laminates with high strength and toughness with exceptional water and hydrolysis resistance.

Formulation

Crestapol 1261 should be allowed to attain workshop temperature before use. For curing at room temperature Crestapol
1261 requires the addition of a catalyst and an accelerator.
N.B. Catalysts and accelerators should not be mixed directly together, since they react with explosive violence.
The recommended catalyst for curing at room temperature is Trigonox 239, which should be added at 2% into the resin
and thoroughly dispersed. The recommended accelerator is Accelerator G1, which should be added at 2% into the resin
and thoroughly dispersed.

Post Curing

Satisfactory laminates for many applications can be made using Crestapol 1261 by curing at workshop temperature.
However, in common with all thermosetting polymers, optimum performance can only be achieved with a high
temperature post cure. The typical cure time can be found inside our Crestapol® Information Guide.
Physical Data – Uncured
The following tables give typical properties of Crestapol 1261 when tested in accordance with BS2782.

The gel time fr this resin at room temperature of 20 ºC is 40-50 min at 25°C with 2% Accelerator G and 2% of catalyst Trigonox 239. Accelerator G is a 1% solution of cobalt in styrene.

Physical Data -Cured: Pure Cast Resin Sheet

• Heat Deflection Temperature (HDT): 109 ºC
• Tensile Strength: 76 MPa
• Tensile Modulus: 3,6 GPa
• Elongation at break: 2,7%

Applicable in infused manufactured laminates for structural applications at thickness 3 mm and 6 mm infused parts Front/Rear train end caps, flooring systems, etc.

Full certification for painted parts usin Fireguard Gelcoat 78PA, Crestapol 1261 resin, Saertex LEO® Quadriaxial 1200 gsm NCF and Beckers 2-3 components Paint.

Complies with EN 45545 (HL 2 for R 17) European Standards for 3 mm and 6 mm infused parts.

Storage

Crestapol 1261 should be stored in the dark in the original container. It is recommended that the storage temperature
should be less than 20°C, but should not exceed 30°C. Containers should be stored out of direct sunlight and away from
other external sources of heat. Ideally, containers should be opened immediately prior to use.

Type of supply

Crestapol 1261 x 1 kg, supplied acelerada with 20 g of Trigonox 239 catalyst

Crestapol 1261 x 5 kg, supplied acelerada with 100 g of Trigonox 239 catalyst

Crestapol 1261 x 25 kg, supplied acelerada with 0,5 kg of Trigonox 239 catalyst