Improved understanding of the effect of paraffinic fuels on the properties of plastics under real-world conditions

This research project investigates the behavior of plastics commonly used in oil-fired heating systems when they come into contact with paraffinic fuels. To this end, plastics relevant to real-world applications are processed into test specimens and characterized under systematically varied storage parameters—such as media type, temperature, composition, and storage duration. The focus is on synthetic, paraffinic fuels such as hydrogenated vegetable oil (HVO) and gas-to-liquid (GtL). While known changes in material properties caused by heating oil or diesel have not yet led to material failure, it is essential to ensure that the effects of paraffinic drop-in fuels are compatible with current design criteria. These criteria do not currently account for the alternating effects of different media. The goal of the research project is to confirm the suitability of the tank materials GRP, PA, and PE for a transition to paraffinic fuels, using defined initial conditions regarding fuel and material selection. Through practical tests, existing technical design procedures will be evaluated, and recommendations for adjustments will be developed. The focus is particularly on alternating loads from paraffinic and fossil fuels. The knowledge gained is intended to ensure the safe operation of fuel tanks and to serve as a basis for adapting standards and establishing approval conditions for new tanks. Test methods will be developed to reliably predict whether alternating refueling with low-sulfur EL heating oil and synthetic fuels can be carried out safely.

We are seeking to launch a research project under the IGF. The proposal has been submitted for review.