Case Study

Case Studies

BÜFA®-Conductive Gelcoat is the new generation of conductive gelcoats in the BÜFA portfolio.


INTERTEC  is a supplier of unique systems  that provide reliable protection for highly sensitive field instrumentation. They are used all over the world to protect equipment that works under extreme operating conditions – in the Arctic, in hot sand deserts but also in Europe. Today, more than half a million such INTERTEC protection systems help instruments, analysis equipment, mobile phone and radar equipment, signalling equipment and transmitters as well as many other devices to operate smoothly and without risk all over the world.

Due to extensive expertise in engineering and through innovation, e.g. in explosion protection and  safety technology, INTERTEC has become the world’s leading manufacturer in this segment today. The INTERTEC protection systems, consisting of GRP sandwich elements with inner and outer skins that enclose a core made of insulating PU foam, combine strength and rigidity with exceptionally good safeguarding functions against adverse environmental conditions. All of the standard products can be adapted to meet specific customer specifications.

BÜFA Composites supplies the new and innovative BÜFA®-CONDUCTIVE Gelcoats based on nanotechnology for these systems which therefore have outstanding properties in the area of conductivity and optimisation of production processes. “BÜFA®-CONDUCTIVE Gelcoats, a high-tech material, offer unbeatable advantages for the production of protection systems in the explosion protection area (according to IEC, ATEX, CSA, GOST, Nepsi) and for harsh environmental conditions with high mechanical requirements” explains Walter Gabler, Technical Director at INTERTEC. “Nearly all of the world’s most well-known companies in the fields of energy, chemistry and engineering are our customers. They trust us when it comes to protecting extremely sensitive instruments and control devices from extreme environmental conditions – using high-tech enclosures and shelters along with heating or cooling systems from INTERTEC”.

Both companies have enjoyed a decade-long cooperation and the development of BÜFA®-CONDUCTIVE Gelcoats was a joint endeavour.

Conductive Line

Conductive Products

With the products of the BÜFA®-Conductive Line  we developed new possibilities for applications with reduced electrical resistance requirements.

"BÜFA-ISO-Gelcoat-SV conductive grey" is the new generation of conductive Gelcoats in the BÜFA-Portfolio.

Outstanding conductivity is achieved through the addition of very small quantities of single-wall  CNTs compared to conventional materials on a carbon black, graphite or carbon fibre base, the quantity  used is less by a factor of 300. Even when compared to conventional multi-wall CNTs, the quantity used is less by a factor of 30. With this new technology, resistances in a range from 109 to 102 Ohm are variably adjustable.

This results in the following new possibilities and advantages:

Visual appearance:

New are shades of colour not possible before, all the way to translucent gelcoat formulations, can now be formulated. These new formulations cannot be distinguished visually from regular, non-conductive materials. Due to the small quantities of single-wall CNTs required, high gloss components can be produced.

BÜFA Neue Chemie Logo


Processing properties remain the same which allows normal processing equipment to be used. Viscosity values also remain at normal levels . This guarantees clearly better de-airing compared to conventional materials.  Because of the lower, reduced quantity of pigments used, curing behaviour is no longer negatively influenced.

High Process Reliability

Conductivity values can be repeatedly achieved from one component to the next. The fine distribution of the nanotubes in the gelcoat guarantee consistently uniform conductivity values.

Your Advantages at a glance:

Constant electrical conductivity, adjustable from 109 to 102 Ohm


  • Constant electrical conductivity, adjusable from  109 to 102 Ohm
  • Electrical heating
  • Available in a wide range of colours or translucent
  • Anti-static
  • Process optimization
  • Low Concentration of functional additives
  • Low viscosity

Here you can see the application possibilities of the BÜFA complete program for processors of composite materials.

Industrial Sectors