Researchers work to design a self-healing coat for fishermen

The work is a collaboration between the Norwegian research institute SINTEF and Helly Hansen, and will aim to produce more robust clothing for fishermen.

‘Clearly they [fishermen] are in one of the most dangerous and challenging work environments, so if you can prolong the life of the waterproof it can make them more comfortable and safer,’ said project collaborator Dr Stephan Kubowicz of SINTEF.

The fishing industry still tends to use traditional oilskin clothing, based on heavy cotton cloth waterproofed with linseed oil or sailcloth with a thin layer of tar.

The SINTEF team has previously worked with polyurethane, which is applied in liquid form to the surface of the underlying textile and then hardens. However, it wanted to go a step further and introduce a self-healing capacity and so looked at some basic research being performed in labs worldwide.

‘We considered some different self-repairing mechanisms where the polymer chains rearrange themselves, but the problem was you need higher temperatures to make this happen — higher than room temperature — so it wasn’t suitable for outdoors,’ Kubowicz told The Engineer.