Application of powder gelcoat with electrical conductivity properties

Powder gelcoat with electrical conductivity properties

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  • Curing time from an hour to just a few minutes
  • Incorporation of carbonaceous fillers
  • Applications: construction, aviation and wind power sectors

A European project is aiming for developing a powder gelcoat coating with electrical conductivity properties obtained by incorporating carbonaceous fillers. The new development shall allow reducing the curing times from an hour to just a few minutes and eliminating secondary painting stages for the final finish with electrostatic paint, thereby achieving a reduction of the manufacturing costs.

Incorporation of carbonaceous fillers

The automotive sector is facing a legislation more and more restrictive with respect to CO2 emissions, a context in which composite materials play a key role, since they allow obtaining products with a reduced weight and with high mechanical properties. However, there are still some limitations related to costs and production ratio that avoid their presence in the market. In order to overcome these obstacles, Aimplas coordinated the European project ECOGEL CRONOS. One of the objectives of this project is to develop a powder gelcoat coating with electrical conductivity properties obtained by incorporating carbonaceous fillers.

Curing time from an hour to just a few minutes

The conventional use of this kind of coatings has some limitations, such as Volatile Organic Compounds (VOC) emission and long curing times. By applying this coating on the mould, a reduction of curing times has been achieved, from an hour to just a few minutes, as well as a reduction of VOC emissions (thus eliminating styrene emissions) during the coating’s polymerization. Furthermore, its electrical conductivity allows eliminating secondary painting stages for the final finish with electrostatic paint, thereby achieving a reduction of the manufacturing costs.

Another benefit of using powder coatings is the reduction of storage and energetic costs, given that it is not necessary to store catalytic systems in refrigeration, since its use is removed during the manufacturing process. It is also a recyclable coating: the excess applied on the mould can be recovered by a vacuum system and reused for downstream uses.

Application: construction, aviation and wind power sectors

In addition to the automotive sector, the application of these coatings is also interesting in other sectors, such as construction, leisure and sports and aviation and wind power industries. Particularly, in the construction sector, the application of this coating allows giving antistatic properties to products such as fuel tanks and pipes.

12 European organizations participate in the ECOGEL CRONOS project: ECOINNOVA and CIDETEC (Spain); Composite Integration, AXON, FAR- UK, and NetComposites (United Kingdom); CLERIUM (the Netherlands); Indupol International N.V. (Belgium); e-Xstream engineering (Luxembourg); University of Bielefeld (FHBI) (Germany); KETEK (Finland); Megara (Greece); and Steel Belt Systems Powder Coating Division (SBS) (Italy).



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