Wolff, Michael F. H.Michael F. H.WolffSalikov, VitalijVitalijSalikovAntonyuk, SergiySergiyAntonyukHeinrich, StefanStefanHeinrichSchneider, Gerold A.Gerold A.Schneider2018-06-082018-06-082014-01-10Composites Science and Technology (90): 154-159 (2014-01-14)http://tubdok.tub.tuhh.de/handle/11420/1678We present a novel processing route to synthesize homogeneous ceramic polymer composites with ultrahigh (~78 vol.%) packing density by using the spouted bed granulation technology and subsequent warm pressing. In the granulation process, two ceramic particle size fractions (alpha-Al2O3) and a thermoplastic polymer (polyvinyl butyral) are assembled to granules. In the process, lm-sized particles are coated with a layer of polymer which contains a second, nm-sized ceramic particles fraction. The mass fractions of each constituents can be adjusted independently. During the warm pressing, the nm-sized particle fraction along with polymer is pressed into the void volume of the lm-sized particles, thus achieving a homogeneous, isotropic composite structure with a very high packing density of ceramic particles. The material, which can easily be produced in large quantities, combines a high modulus of elasticity (up to 69 GPa), tensile strength (~50 MPa), and pronounced fracture strain (~0.1%) with an isotropic, biocompatible, metal-free composition. Possible failure mechanisms are discussed, including failure due to necking of the polymer, and failure due to limited polymer–particle-interfacial strength.en0266-35382014154159Elsevierhttps://creativecommons.org/licenses/by-nc-nd/3.0/spouted bedgranulationcompositefilling degreeB. mechanical propertiesIngenieurwissenschaftenJournal Articleurn:nbn:de:gbv:830-8822127710.15480/882.167511420/167810.1016/j.compscitech.2013.11.00610.15480/882.1675Journal Article