The new issue of RFP is out!
The new issue of RFP is out! Find out how the ICCA developed at Coesfeld enables quantitative characterization of the chip and cut behavior of rubber for tire applications without field testing and how serinol derivatives can be employed for the sustainable vulcanization of diene elastomers. A study carried out by scientists at Bosch and Institute for Plastics Processing (IKV) Aachen shows how thermoplastic vulcanizates (TPV) and EPDM differ in their gas permeation behavior towards hydrogen. The University of Twente and the Polymer Science Park in Zwolle have established a link between research and education by cooperating in the newly founded Elastomer Competence Centre. Sigmasoft describes a virtual DoE for the improvement of part properties and Arburg presented its solutions for digitalization during the Arburg Technology Days 2019.
In this issue:
- Quantication of chip and cut behaviour of basic rubber (NR, SBR)
R. Kipscholl, (Coesfeld GmbH & Co. KG) and R. Stoček, (PRL Polymer Research Lab.)
In this work a new laboratory test equipment is presented, that allows the definition of suitable load conditions (force, rotational speed, impact incidence). The Instrumented Chip & Cut Analyzer (ICCA) collects all relevant data during the test. Using a mathematical algorithm, realistic and reliable answers on CC behaviour of the rubber are derived from the measurements.
- Serinol derivatives for the sustainable vulcanization of diene elastomers
V. Barbera, L. Rubino, S. Musto, G. Infortuna, V. Cipolletti, A. Citterio and M. Galimberti (Politecnico di Milano)
Serinol and serinol derivatives are used in place of diphenyl guanidine as secondary accelerators for the vulcanization of compounds based on diene elastomers and silica as the filler. Kinetics of crosslinking are investigated and confirmed by performing vulcanization of an NR based compound in the absence of any filler. Serinol can be obtained glycerol transformed, by means of sustainable technologies into molecules suitable for the rubber world.
- Gas permeation behavior of thermoplastic vulcanizates (TPV) and ethylene-propylene-diene rubber (EPDM) under consideration of processing influences
C. Hopmann, M. Drach, N. Yesildag, S. Gharbi, (Institute for Plastics Processing (IKV) at RWTH Aachen University) and S. Sitz (Robert Bosch GmbH)
For sealing materials in contact with gases such as hydrogen, a consideration of gas permeability is of elementary importance for the assessment of safety, functionalit and reliability. The aim of the presented study is to give an overview of the permeation behavior of thermoplastic vulcanizates (TPV) and ethylene-propylenediene rubber (EPDM) towards hydrogen under consideration of processing infl uences. A comparison of TPV and EPDM shows a differentiated permeation behavior.
Further information about the new issue at https://www.gupta-verlag.com/magazines/rfp-rubber-fibres-plastics-international/02-2019.