UPM BioMotion™ RFF are characterized by high specific resistivity of greater than 1*1010 Ωm in a dry state. The corresponding electrical conductivity in an aqueous solution has been determined to be less than 1500 μS/cm according to ISO 787. In contrast to carbon black and like precipitated silica or other inorganic white fillers, rubber compounds applying UPM BioMotion™ RFF maintain their electrical insulating performance at any filler concentration. This feature effectively prevents electrochemical corrosion and thus improves lifetimes of metal parts in direct contact to the rubber. Similarly, electrochemical degradation of rubber parts in direct contact with water and other cooling liquids are effectively avoided.
In contrast to many fossil-based materials, UPM BioMotion™ RFF is characterized by high purity. The related content for each of the eight different EU PAHs is well below 0.1 mg/kg. In compliance with Commission Regulation (EU) No. 1272/2013, UPM BioMotion™ RFF are ideally suited to be used even at very high concentrations in plastic or rubber parts of consumer goods as no PAHs are added by their introduction. Due to the absence of hazardous PAHs, UPM BioMotion™ RFF can be even applied for Category 1 materials of the voluntary “Tested Safety” mark (Geprüfte Sicherheit, GS-Mark) of the German Product Safety Committee (Ausschuss für Produktsicherheit, AfPS) without concentration limits.
UPM BioMotion™ RFF offer high cleanliness: zero grit in the form of coke and refractory materials, sulphur levels of less than 0.2wt%, traces of heavy metals like Cr, Cu, Ni, Pb, Zn well below 10 ppm, and a residual ash content of less than or equal to 1wt%.
Driven by a total oxygen content of greater than 25wt%, UPM BioMotion™ RFF are polar and thus perfectly suited to improve the swelling resistance of rubbers against non-polar media. Surface OH-groups in phenolic and aliphatic functionalities are available for chemical modification and reaction, further expanding the range of possible applications.
UPM BioMotion™ RFF facilitate the creation of high-performance rubber compounds by state-of-the art industrial mixing, extrusion, and molding processes. Low to medium-specific surface areas combined with tailor-made pellet properties in terms of hardness and fines content enable the highest compound qualities at low mixing costs (e.g., time, energy consumption, number of stages). Colloidal properties and pellet characteristics are designed for the highest level of filler dispersibility which in combination with zero coke or refractory grit enable high extrusion speeds and maximum strainer sieve lifetimes. UPM BioMotion™ RFF are perfectly suited for top-in-class extrusion performance. In addition, their tailor-made colloidal properties and surface functionalities enable compounders to design rubber compounds that are perfectly suited for all kinds of molding applications.