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Crestapol® 1211A is a filled, partially accelerated, tough, urethane acrylate resin designed for applications requiring the highest levels of fire & smoke performance. It incorporates a selected grade of Alumina Trihydrate (ATH) which makes it suitable for the production of laminates where excellent fire resistance and low levels of smoke & toxic fumes are required. Crestapol® 1211A is halogen free and does not contain heavy metals.
Cured laminates produced with Crestapol® 1211A and gelcoat Crystic® Gelcoat 78PA achieves HL2/R1 & HL3/R7/R17 fire rating as per BS EN 45545-2:2013 for railway applications.
Crestapol® 1211A has been primarily designed for use in closed mould applications, including RTM and Vacuum infusion with suitable reinforcements, but its properties make it also suitable for use in contact moulding techniques, such as hand lay-up and spray-up. Due to its excellent fire, smoke & toxicity properties, the product can be used in the most demanding applications in the building and construction, public transport and railway industries.
Crestapol® 1211A ‐ A resin:glass ratio of 2.5:1 is recommended for chopped strand mat laminates made by hand lamination.
Crestapol® 1211A is a versatile resin with excellent fire, smoke & toxicity properties and good mechanical properties. Its viscosity characteristics have been designed to promote a good resin flow through the mould using appropriate reinforcements, whilst minimising filler settlement during storage. It is recommended for use when excellent low smoke, low toxic fume emissions and fire resistant laminates is desired.
Crestapol® 1211A is a pre-filled, partially accelerated resin and must be thoroughly stirred and allowed to attain workshop temperature (18°C - 23°C) before use. It requires the addition of a catalyst and one accelerator to start the curing reaction.
N.B. Catalyst and accelerators should not be mixed directly together, since they react with explosive violence.
The recommended catalyst is Butanox® M50 and the recommended accelerator is Accelerator G (i.e. 1.0% solution of cobalt in styrene). Cobalt free accelerators may be also considered (for more details on liquid cobalt free cure systems please seek assistance from our Technical Services Department).
The accelerator G should be added into the resin and thoroughly dispersed prior the injection of the resin in the RTM mould cavity. Catalyst Trigonox® 44B can also be used when faster demould times is required.
Dibenzoyl peroxide (BPO) based catalysts can also be used to start the curing reaction without the need to add an accelerator. The recommended catalyst is Perkadox® CH50-X and should be added into the resin at a level of 1.0% and thoroughly dispersed.
The geltimes that can be achieved depend on the levels of accelerator and catalyst. Examples of approximate pot life are shown in the technical data sheet available.
Pot Life at 20°C with 1,5% of BPO catalyst: 23,8 min.
Crestapol® 1211A is filled with a special grade of Alumina Trihydrate (ATH) to provide good resin flow in closed mould systems and also give excellent fire, smoke & toxicity properties. It incorporates anti-settling additives to minimise filler settlement during storage and promote good filler redispersion in the resin.
Without post cure, laminates made with Crestapol® 1211A can reach approximately 90% of their total cure. Therefore, no post cure is required. For optimum fire retardant properties, however, laminates should be post cured before being put into service. The laminate should be allowed to cure for 24 hours at 20°C, and then be oven cured for 3 hours at 80°C.
Crestapol®1211A, supplied in a 5 kg metallic pail + 75 g of powder BPO catalyst
Crestapol®1211A, supplied in a 25 kg metallic pail + 375 g of powder BPO catalyst
Crestapol®1213A, supplied in a 200 kg metallic drum + 3 kg g of powder BPO catalyst
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