H2Block

© J. Wehsener

Wooden Support Block for Hydrogen Tanks with Enhanced Shear Strength
Subproject: Development of a cold-resistant, shear-resistant high-performance material

Liquefied natural gas (LNG) is transported at -162°C. The tanks rest on synthetic resin-bonded wood (KHP) blocks. These blocks enable the transfer of mechanical loads and thermal stress (insulation) into the ship’s structure for the transport of LNG and hydrogen (H2). Temperature gradients as low as minus 216°C pose particular challenges. KHP has high compressive strength (>200 N/mm²) but low tensile and shear strength (<10 N/mm²).
The main objective is to reduce anisotropy through a transversely reinforced panel structure. In addition to methods of strengthening using material-intrinsic elements, processes and methods for manufacturing KHP must be developed.
Various approaches are being investigated, such as the incorporation of stiffening and crack-stopping inserts (transverse profiles) and the alteration of the fiber orientation (local deformation) of the veneer layers during the KHP manufacturing process. The mechanical properties of the semi-finished product as a function of load, temperature, and humidity must be determined. A further goal is to translate the material development into components for applications in refrigeration engineering, civil engineering, shipbuilding, and automotive engineering.