ATTENTION! ARALDITE® BONDS MILITARY SHELTERS
31 August 2003 - Huntsman Araldite

The shelters are built by OMC in Perugia, Umbria. The company has been using Araldite adhesives on a range of hot-press bonding applications for the last ten years. A number of leading companies linked to the Italian Department of Defence, such as Marconi, Page Europa, Oerlikon Contraves are among OMC’s clients.

Araldite AW 136H (with hardener HY 991) has been used in a thermal bonding process for joining sandwich panels consisting of two external aluminium alloy layers bonded to an aluminium alloy and toughened polyurethane middle structure.

The size of the panels varies according to the type of shelter required from 1750mm x 3820mm to 2500mm x 6000mm. Once assembled, a large, totally insulated cubic container is the result.

Any joining method other than bonding, such as riveting, would weaken the integral
strength of the shelter.

The adhesive was applied manually to the substrates with a spatula. The panels were then cured in a press at 70°C for 45 minutes. No additional clamping was required.

“We depend on the Araldite range of adhesives to meet this project’s wide ranging and demanding requirements,” said Renato Cavallucci, Supply Manager at OMC. “The bond has outstanding mechanical strength and excellent performance in severe weather conditions.”

The bonded joints were subject to a series of tough trials in a climatic chamber and
showed no signs of delamination or deterioration. “Araldite AW 136 has also been
approved for use in this application during military action or simulations in the most
inhospitable parts of the world,” added Mr Cavallucci.

Araldite AW 136H is a high viscosity two-component epoxy adhesive, which cures at room temperature. Its high mechanical resistance and hardness make it suitable for bonding metals, ceramics and engineering plastics.

http://www.araldite.com

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