Description
Description
Interchar 3120 is a versatile, two-component, modified epoxy intumescent coating for cellulosic fire protection, providing a high quality, cosmetically appealing finish.
Interchar 3120 is a low VOC and boron-free coating designed to provide fire protection to structural steelwork. independently tested, assessed and certified this product is suitable for use on both open and closed structural sections.
Interchar 3120 is a spray applied material and does not require any form of reinforcement.
Where To Use
To assist in preserving the structural integrity of steelwork in a cellulosic fire situation. Typicalstructures requiring this protection include a wide range of commercial, industrial, public andtransport buildings e.g. airport terminals, leisure facilities, convention centres, high-rise buildings,educational facilities, shopping malls, industrial complexes and hotels.
Interchar 3120 utilises durable epoxy technology to provide a material that allows steelwork to be fabricated and fire-protected away from the construction site.
Interchar 3120 has been designed to be extremely versatile and can be used direct to metal or over approved primers.
In addition, Interchar 3120 can also be applied using single leg or plural sprayequipment on Isections, hollow sections and cellular beams.
Product Characteristics
When applying Interchar 3120 in confined spaces ensure adequate ventilation.
Do not apply at steel or air temperatures below 5C (41F) or when relative humidity is above 85%.
This product will not cure adequately below 5C (41). For maximum performance ambient curingtemperatures should be above 10C (50F).
Surface temperature must always be a minimum of 3C (5F) above dew point.In common with all epoxies Interchar 3120 will chalk and discolour on exterior exposure. Thesephenomena are not detrimental to fireproofing performance. Where a durable cosmetic finish with good gloss and colour retention is required overcoat with recommended topcoats.Where multi-coat systems are to be used, optimum intercoat adhesion is best achieved by keepingthe overcoating interval as short as possible.
Interchar 3120 is tested and assessed in accordance with the following standards / guidance:
BS 476 Parts 20-22 – ASFP Yellow Book Rev 5 assessed
EN 13381-8 tested and assessed
EN 13381-9 tested and assessed for cellular beams
ASFP Yellow Book Rev 5 assessed for cellular beams
Low molecular weight reactive additives, which will form part of the film during normal ambient cureconditions, will also affect VOC values determined using EPA Method 24
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