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Technology Front

Flame-Retardant Construction Adhesive on Board

Published: Dec 13,2016

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DELO Industrial Adhesives has developed a new two-component adhesive for aircraft interiors. DELO-DUOPOX AB8390 is particularly well suited for bonding of light-weight sandwich panels.

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Before adhesives can be used in aircraft interiors, they are subjected to various tests to prove their suitability. The epoxy resin DELO-DUOPOX AB8390 independently fulfils, among others, the requirements regarding fire protection (FST, flammability, smoke density and toxicity) according to CS/FAR part 25 §25.853 (a)(1)(ii)/(d) and ABD0031.

This construction adhesive has been developed especially for use in aircraft interiors and features important properties such as good resistance in the temperature range from -55 °C to +85 °C. The adhesive is colorfast in white and will remain so, which has been proved in a storage test during a time period of 1,000 hours at +70 °C and an air humidity of 85%. In contrast to other adhesives which can yellow strongly, DELO-DUOPOX AB8390 offers a robust color result for high-quality applications.

The DELO-AUTOMIX dispensing system allows the thixotropic epoxy resin to be quickly and easily applied, just like a one-component adhesive. During manual processing, the processing time of 30 minutes also allows a rework on the component. The adhesive cures completely at room temperature. To reduce the cycle times in production, higher temperatures, e.g. 60 °C, may accelerate the curing process.

Due to the optimized dispensing behavior in combination with the high resistances, this flame-retardant construction adhesive is not only predestined for load-bearing connections with inserts but also for adhesive bonding in the field of ditch & pot applications.

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