@article{HerrmannMoldovanFecheteetal., author = {Herrmann, Volker and Moldovan, Dumitrita and Fechete, Radu and Demco, Dan Eugen and Culea, Eugen and Bl{\"u}mich, Bernhard and Heinz, Manfred}, title = {Heterogeneity of Nanofilled EPDM Elastomers Investigated by Inverse Laplace Transform 1H NMR Relaxometry and Rheometry}, series = {Macromolecular Chemistry and Physics}, volume = {211}, journal = {Macromolecular Chemistry and Physics}, number = {14}, doi = {https://doi.org/10.1002/macp.201000086}, pages = {1579 -- 1594}, abstract = {The heterogeneous effects due to filler interactions and chain dynamics of reinforcing nano-filler particles were characterized on a series of filled EPDM elastomers using the Payne effect and low field NMR, 1H transverse (T2), longitudinal (T1) and longitudinal in rotating frame (T1ρ) relaxation time measurements. Measurement of the Payne effect and NMR relaxation curves were used to obtain the distribution of filler/filler interactions and chain dynamics by one-dimensional Laplace inversion. Distributions of shear-strain constants in the Payne effect reveal the existence of weak, medium and strong filler/filler interactions which were correlated to filler properties and content. The analysis of relaxation-time distributions leads to the identification of multimodal polymer network dynamics.}, language = {en} } @article{HerrmannMoldovanFecheteetal., author = {Herrmann, Volker and Moldovan, Dumitrita and Fechete, Radu and Demco, Dan Eugen and Culea, Eugen and Bl{\"u}mich, Bernhard and Heinz, Manfred}, title = {The heterogeneity of segmental dynamics of filled EPDM by 1H transverse relaxation NMR}, series = {J. Magn. Res.}, volume = {208}, journal = {J. Magn. Res.}, number = {1}, doi = {https://doi.org/10.1016/j.jmr.2010.10.019}, pages = {156 -- 162}, language = {en} } @article{HerrmannNiedermeier, author = {Herrmann, Volker and Niedermeier, W.}, title = {Interpretation of Filler Networking of Loaded Rubbers via Mastercurves}, series = {Kautschuk Gummi Kunststoffe}, volume = {63}, journal = {Kautschuk Gummi Kunststoffe}, pages = {559 -- 564}, language = {en} } @article{Herrmann, author = {Herrmann, Volker}, title = {Moderne Elastomere}, series = {Ingenieurspiegel}, journal = {Ingenieurspiegel}, number = {3}, pages = {100 -- 101}, language = {de} } @article{HerrmannHeinrich, author = {Herrmann, Volker and Heinrich, A.}, title = {Influence of the modification of ground truck tyres as an additive on the properties of a truck tread compound}, series = {International Polymer Science and Technology}, volume = {44}, journal = {International Polymer Science and Technology}, number = {5}, doi = {10.1177/0307174X1704400501}, pages = {T/1 -- T/9}, abstract = {Commercially available ground tyre rubber (GTR) made exclusively from post-consumer truck tyres was mixed into a typical truck tyre tread compound. As already shown in a previous study, this leads to a distinct deterioration in properties. The goal of the present investigation was to minimise these property losses through modification of the GTR in terms of processing methods. Modification methods already documented in the literature were used, e.g. application of sulphur and crosslinking agents to the GTR and the use of trans-polyoctenamer as well as liquid polymers, which in principle provide the potential for crosslinking of the GTR and polymer matrix through the availability of double bonds. For some methods of modification, small improvements are observed in comparison with the unmodified GTR. However, none of the GTR modifications reaches the level of the reference compound without GTR. An economic estimate for the modification with the highest potential for technical success shows that, in practice, considerable costs must be expected.}, language = {en} } @article{HerrmannSchulz, author = {Herrmann, Volker and Schulz, A.}, title = {Der Einfluss von Lkw-Reifenmehl als Additiv auf die Eigenschaften einer Lkw-Lauffl{\"a}chenmischung}, series = {Gummi Fasern Kunststoffe GAK}, volume = {69}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {698 -- 705}, abstract = {Commercially available ground tire rubber (GRT) was mixed into a typical truck tire tread compound. The GRT originated from postconsumer truck tires and differed in the manufacturing process (cryogenic and warm grinding, resp.) as well as the ageing state. Regardless of the grinding process type, the vulcanizates containing GRT became softer, mechanical properties and the abrasion resistance worse and the Payne effect decreased. Additional artificial ageing of the GRT showed no further effects regarding property changes when adding GRT. Based on the vulcameter curves it could be seen, that the curing behaviour of the compounds changed and the crosslink density of the matrix obviously decreased by adding GRT. Additional !'jXRF images and measurements for dynamic local indentation indicated increased sulphur content inside the GRT particles.}, language = {de} } @article{HerrmannNassLemmichetal., author = {Herrmann, Volker and Naß, Felix and Lemmich, Sebastian and Wachter, Florian}, title = {Einfluss des EFE-Spritzsystems auf Heizzeitreduzierung und Eigenschaften der gespritzten Bauteile - Teil 1: „Betrachtung der Heizzeitreduzierung {\"u}ber reaktionskinetische Berechnung und begleitende Untersuchungen zu Bauteil- und Vernetzungsdichte mittels NMR-Bildgebung"}, series = {Gummi Fasern Kunststoffe GAK}, volume = {66}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {37 -- 42}, language = {de} } @article{HerrmannNassLemmichetal., author = {Herrmann, Volker and Naß, Felix and Lemmich, Sebastian and Wachter, Florian}, title = {Einfluss des EFE-Spritzsystems auf Heizzeitreduzierung und Eigenschaften der gespritzten Bauteile - Teil 3: „Absch{\"a}tzung der Scherenergie und Einfluss der Drossel auf ausgew{\"a}hlte Eigenschaften der gespritzten Bauteile"}, series = {Gummi Fasern Kunststoffe GAK}, volume = {66}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {180 -- 184}, language = {de} } @article{HerrmannNassLemmichetal., author = {Herrmann, Volker and Naß, Felix and Lemmich, Sebastian and Wachter, Florian}, title = {Einfluss des EFE-Spritzsystems auf Heizzeitreduzierung und Eigenschaften der gespritzten Bauteile - Teil 2: „Einfluss der Verfahrensparameter des Spritzgießprozesses auf die Heizzeitreduzierung"}, series = {Gummi Fasern Kunststoffe GAK}, volume = {66}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {108 -- 112}, language = {de} } @article{HerrmannHeinrich, author = {Herrmann, Volker and Heinrich, A.}, title = {Einfluss der Modifikation von LKW-Reifenmehl als Additiv auf die Eigenschaften einer LKW-Lauffl{\"a}chenmischung}, series = {Gummi Fasern Kunststoffe GAK}, volume = {70}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {88 -- 95}, language = {de} } @article{HerrmannSpeyerLeiber, author = {Herrmann, Volker and Speyer, Y. and Leiber, J.}, title = {Herstellung und Verarbeitung von sortenreinem Gummimehl im Labormaßstab}, series = {Gummi Fasern Kunststoffe GAK}, volume = {70}, journal = {Gummi Fasern Kunststoffe GAK}, pages = {240 -- 247}, language = {de} } @article{HerrmannSchulz, author = {Herrmann, Volker and Schulz, A.}, title = {Influence of ground truck tires as an additive on the properties of a truck tread compound}, series = {Rubber Fibres Plastics RFP}, volume = {13}, journal = {Rubber Fibres Plastics RFP}, pages = {24 -- 30}, language = {en} }