Projects

Die Offshore-Windenergie zählt zu den wichtigsten erneuerbaren Energiequellen in Deutschland. Die maritimen Tragstrukturen von Windenergieanlagen sind dabei komplexen Umweltbeanspruchungen ausgesetzt, deren Auswirkungen auf die Ermüdungslebensdauer nach dem heutigen Stand der Technik nur eingeschränkt zuverlässig bewertet werden können. Vor diesem Hintergrund haben wir eine praxistaugliche und zugleich präzise Methode zur Lebensdauerprognose versagenskritischer Schweißverbindungen entwickelt. Dadurch lassen sich erhebliche Einsparpotenziale im Herstellungsprozess erschließen.

Antioxidant highly effective compounds from nature tailor-made for your use in plastics.

The use of plastics from recyclates is largely determined by their quality. With the exception of production waste with little damage, a used plastic cannot be used in the form in which it is produced or collected. Usually, if necessary, it is sorted, cleaned and reprocessed, for example into granules. For a sufficient recyclate quality with adequate processing and long-term stability for the intended application, post-stabilization with suitable additives is often required. With appropriate additives such as stabilizers, compatibilizers and reactive additives, recyclates achieve comparable properties to virgin material.

Sustainable plastic recyclates and biodegradable polymers for nonwovens and roofing membranes: 1. Is it possible to recycle and additives different waste streams to produce high-quality recyclates, which in turn can be used to produce fibers and films that can be further processed into competitive nonwovens and films for roofing membranes? 2. Can fibers be produced from bio-based polymers that can not only be spun into nonwovens, but whose degradation in the environment can be adjusted and which do not pose a risk to the environment?

Vibroacoustic metamaterials as noise and vibration reduction measures enable new design freedom for the targeted vibroacoustic optimization of components while simultaneously taking lightweight construction criteria into account. passive vibration reduction measures, structural dynamics.

The FNR project “BioFlammschutz” has developed innovative, bio-based, and environmentally friendly phosphorus-containing flame retardants. These are intended to serve as an ecologically and economically advantageous alternative to the halogen-containing flame retardant additives currently in use, which are problematic from an ecotoxicological perspective. The new flame retardants were produced from cotton and wood cellulose and the inexpensive sugar alcohol erythritol using a method developed at Fraunhofer LBF. Their suitability was demonstrated in flame retardant applications for polyolefins and a partially bio-based polyamide.

Components made of zinc die-cast alloys are used in various industries due to their high surface and component quality and the efficiency of the hot-chamber die-casting process. However, they are rarely used for components subject to high cyclic loads because they lack structural durabiity characteristics. To change this, the cyclic material behavior of various zinc die-cast alloys was investigated and summarized in a design concept.

Flame protection of plastics by additives, layer silicates reduce the long-term stability of the cable sheathing - NanoFlame project, solutions light stabilizer and epoxy

Improve typical plastic properties by blending without reducing thermal conductivities. Thermally conductive polyamide 6 blends with high flowability.

In the development process for new wheels, the structural dynamic properties are estimated by the suppliers using numerical models. To validate these properties, car manufacturers require experimental proof of these properties. For this purpose, the first newly manufactured wheels must be examined using methods of experimental structural dynamics according to special OEM specifications. Based on many years of experience, Fraunhofer LBF is familiar with these methods and the OEM's specifications. We offer wheel manufacturers the opportunity to carry out the required experiments to provide evidence.