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24th October 2016, Laholm

Divinycell F for new interior aircraft applications

Diab Divinycell F interior aircraft sidewall. © DiabTeaming up with Diab, a leader in high-performance composite core materials, Canadian manufacturer FDC Composites has utilised Divinycell F50 cores to certify new side wall panels and numerous other interior aircraft parts, in many types of commercial and business aircraft, from many major OEMs.

Based in Montreal, Canada, FDC Composites specialises in manufacturing and design of composite parts and assemblies. Primarily focusing on the aerospace sector, FDC Composites also offers its expertise to industries with high technical requirements, such as the rail industry.

The company works with all types of fibres and resins, and uses different manufacturing techniques, from prepreg, Vacuum Assisted Resin Infusion (VARTM) and Vacuum Bag Moulding, to 3D printing, light RTM, hand lay-up, and it will field its first aerospace grade autoclave in the coming months.

Divinycell F50 cores for interior aircraft parts

The F50 was brought to FDC for evaluation by Diab’s Canadian distributor BMB and it was selected because it passes the interior application certification regulations for commercial airlines. A foamed PESU sandwich core, Divinycell F is said to resist high temperature and exceed all requirements for fire, smoke and toxicity (FST) and heat release requirements.

In addition to aircraft interior panels and parts, FDC Composites also uses sandwich composites for train parts in rail cars and flight simulators.

Technical properties 

Divinycell F characteristics aim to benefit the design and manufacturing of aircraft interiors. With densities from 40 to 90 g/l (2.5 to 5.6 lbs/ft3), Divinycell F is said to be flexible enough to realize various design ideas, including curved and innovative shapes, without compromising strength.

Compared to Nomex honeycombs, the material is said to save up to 20% weight. It requires fewer steps to achieve a high quality surface finish and its closed cells and minimum water absorption eliminates the need for edge filling, the company reports.

All these characteristics are said to result in substantial time and cost savings for the manufacturer. In addition, it features improved acoustical and thermal insulation properties compared to honeycomb. Divinycell F can be formed at hot or cold temperatures, can easily be cut, and is also available in the form of precut kits.

Approved by Airbus

Divinycell F is becoming well recognized and accepted for aircraft interiors, the company reports. The structural foam core has been approved by Airbus under AIMS 04-11-000 and ABS5927 standard.

“Fully recyclable and with reduced impact on the environment, it is a sustainable material for the future, and, combined with a thermoplastic skin made of the same polymer, Divinycell F offers an even greener solution,” the company explains.

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