TY - CONF A1 - Stark, Wolfgang T1 - Characterization of the low temperature behaviour of rubber sealing materials T2 - 22. Fachtagung TECHNOMER 2011 CY - Chemnitz, Germany DA - 2011-11-10 PY - 2011 AN - OPUS4-24322 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang A1 - Teteris, Gundars A1 - Braun, Ulrike A1 - Bohmeyer, W. A1 - Lange, K. T1 - Kontrolle der Vernetzungsreaktion bei reaktiven Harzen - DSC, Rheologie, DMA, FTIR und Online-Ultraschall im Vergleich N2 - Faserverbundbauteile werden durch Tränkung von Fasergewebe mit flüssigem Harz, in der Regel Epoxidharzen, und anschließender Härtung des Harzes gefertigt. Dabei kann man das Gewebe im Vorfeld mit reaktivem Harz tränken und als so genanntes Prepreg verarbeiten oder man injiziert das frisch mit dem Härter gemischte Harz in ein Werkzeug, in dem das Gewebe bereits liegt - z. B. beim RTM-Prozess. Ausgehend von der Aufgabenstellung, eine Prepregherstellung mit hohem Qualitätsstandard zu realisieren und Möglichkeiten der Fertigungskontrolle für den Prepreg-Verarbeiter aufzuzeigen, wurde an einem für die Prepregherstellung vorgesehenen Harzsystem eine weitgehende Charakterisierung des Aushärtungsverlaufs vorgenommen. Wegen der Schwierigkeit, schnell konstante Aushärtungstemperaturen zu erreichen, wurden bei allen Methoden mit einer Heizrate von 1 K/min von RT bis 200 °C aufgeheizt. T2 - Technomer 2011 - 22. Fachtagung über Verarbeitung und Anwendung von Polymeren CY - Chemnitz, Deutschland DA - 10.11.2011 KW - Thermoanalyse KW - Lineare Aufheizung KW - Online Prozesskontrolle KW - Epoxidharz KW - Prepreg PY - 2011 SN - 978-3-939382-10-2 IS - Kap. 1.1 SP - 1 EP - 9 AN - OPUS4-24910 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Kontrolle der Vernetzungsreaktion bei reaktiven Harzen - DSC, Rheologie, DMA, FTIR und Online-Ultraschall im Vergleich T2 - Technomer - 22. Fachtagung über Verarbeitung und Anwendung von Polymeren CY - Chemnitz, Germany DA - 2011-11-10 PY - 2011 AN - OPUS4-24900 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jaunich, Matthias A1 - Schulz, Sebastian A1 - Stark, Wolfgang A1 - Wolff, Dietmar T1 - Characterization of the low temperature behaviour of rubber sealing materials N2 - Rubbers are often used for seal applications due to their special material properties and easy use. In many applications the material is exposed to low temperatures during Operation. Therefore it is important to know the material behavior at low temperatures to determine the temperature ränge that allows a Safe Operation of the seal, e.g. in storage and transport Containers for radioactive materials. The seal function of an elastomer is limited in temperature by the rubber-glass transition during which the material properties change from rubber-like to stiff and glass-like. For a given application this correlation is not trivial and therefore needs an in-depth investigation under consideration of the physical properties and the application conditions. In this work different analytical methods are used to characterize the material behavior at low temperature in the ränge of the glass-rubber-transition and are compared with the quality of Operation of a component which is here defined by the detected leakage rate. T2 - Technomer 2011 - 22. Fachtagung über Verarbeitung und Anwendung von Polymeren CY - Chemnitz, Deutschland DA - 10.11.2011 PY - 2011 SN - 978-3-939382-10-2 IS - Kap. 3.7 SP - 1 EP - 4 AN - OPUS4-24971 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Einsatz thermoanalytischer Methoden bei der Charakterisierung vernetzender Kunststoffe T2 - Anwenderseminar zur Thermoanalyse, Netzsch, Analytica 2012 CY - Munich, Germany DA - 2012-04-18 PY - 2012 AN - OPUS4-25890 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jaunich, Matthias A1 - Stark, Wolfgang A1 - Wolff, Dietmar T1 - Low temperature - For a seal this depends on the applied material T2 - DKT 2012 - German Rubber Conference CY - Nuremberg, Germany DA - 2012-07-02 PY - 2012 IS - 10-2330_5-L-1530 SP - 1 EP - 4 PB - Deutsche Kautschuk-Gesellschaft CY - Frankfurt am Main AN - OPUS4-26190 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jaunich, Matthias A1 - Wolff, Dietmar A1 - Stark, Wolfgang T1 - Low temperature properties of rubber seals - results of component tests T2 - 10th Fall rubber colloquium CY - Hannover, Germany DA - 2012-11-07 PY - 2012 SN - 978-3-9814076-1-7 IS - khk2012_jaunich.pdf SP - 1 EP - 8 AN - OPUS4-26995 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Jaunich, Matthias A1 - Stark, Wolfgang A1 - Wolff, Dietmar T1 - Comparison of low temperature properties of different elastomer materials investigated by a new method for compression set measurement N2 - The method for the determination of compression set values with a Dynamic Mechanical Analysis (DMA) setup at low temperatures, which was presented previously, allows a much faster and readily automated procedure than the standardized compression set test according to ISO 815-2. This method is applied to a series of different elastomeric materials that are commonly used for sealing applications. The results of the compression set test are compared with results from thermal analysis to allow an in depth comparison of the material behaviour at low temperatures. Furthermore, a comparison between two EPDM materials is presented. These materials show very similar properties determined by thermo analytical methods such as Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Analysis (DMA) but differ clearly in their compression set behaviour. This comparison shows the importance and value of information of the compression set test in addition to thermal analysis to judge the behaviour of sealing materials and confirms the relevance of the new compression set test method for the investigation of low temperature properties of elastomers. KW - Sealing material KW - Elastomer KW - Compression set KW - Dynamic mechanical analysis KW - Low temperature behaviour PY - 2012 DO - https://doi.org/10.1016/j.polymertesting.2012.07.016 SN - 0142-9418 VL - 31 IS - 8 SP - 987 EP - 992 PB - Elsevier Science CY - Amsterdam [u.a.] AN - OPUS4-26538 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Investigation of Crosslinking and degradation process by infrared Spectroscopy T2 - 4th bilateral Symposium on heterocyclic and heterochain polymers for advanced materials CY - Iasi, Romania DA - 2012-09-03 PY - 2012 AN - OPUS4-26493 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - BAM - Federal Institute for Materials Research and Testing - experiences in the field of quality management at thermosets T2 - 4th Bilaterial Symposium on heterocyclic and heterochain polymers for advanced materials CY - Iasi, Romania DA - 2012-09-03 PY - 2012 AN - OPUS4-26518 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Stark, Wolfgang T1 - Correlation between low temperature behaviour of rubber seals and glass-rubber transition T2 - 4th Bilateral Symposium on heterocyclic and heterochain polymers for advanced materials CY - Iasi, Romania DA - 2012-09-03 PY - 2012 AN - OPUS4-26519 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jaunich, Matthias A1 - Stark, Wolfgang A1 - Wolff, Dietmar T1 - Material behaviour of static seals at low temperatures T2 - 17th ISC - International sealing conference CY - Stuttgart, Germany DA - 2012-09-13 PY - 2012 SN - 978-3-00-039198-9 IS - A 16 SP - 295 EP - 300 CY - Frankfurt/M. AN - OPUS4-26524 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -