Forschung Zur Rubrik

Premium
Liniendiagramm mit bunten Linien und Achsenbeschriftungen in Zahlen.
­Analysis of Tetrafluoroethylene-Propylene Elastomer

Effect of Gamma Ray Pre-Irradiation on Thermogravimetric

The changes of the thermal stability by gamma ray pre-irradiation on tetra­fluoro­ethylene-propylene elastomer was studied by the measurement of the weight change. The weight decrease curves by thermal aging at constant temperatures were straight line. The ­activation energy calculated from the slope was 130 kJ/mol. The activation energy was obtained by also the thermogravimetric analysis. The value was from 143 kJ/mol to 157 kJ/mol with ­reference to ISO 11358-2. Friedman plot (ISO 11358-3) of the same TG curves showed the activation energy from 142 kJ/mol to 153 kJ/mol.

Premium
Zwei Balkendiagramme mit hell- und dunkelgrünen Balken.
Process Temperature and Mass Content of the added TEM have a significant Influence on the Foam density Reduction

Investigation of the Foam Density Development of EPDM Rubber Foam using Thermoplastic ­Expandable Microspheres

The aim of these experimental investigations is to understand the potential for reducing foam density by the amount of Thermoplastic Expandable Microspheres (TEM) used as foaming agent, the processing temperature and the viscosity of the rubber. Two EPDM-based rubber compounds that are processed in injection moulding and ex-trusion processes, and therefore have different viscosities, have been the subject of investigation. A Sponge Rubber Analyzer is used to determine the time-dependent reduction and thus the lowest achievable foam density. It was shown that the process temperature and the mass content of TEM added had a significant influence on the foam density reduction.

Roh- & Zusatzstoffe Zur Rubrik

Aus unserem Netzwerk

Verarbeitung Zur Rubrik

Werkzeug & Formen Zur Rubrik

Qualitätssicherung Zur Rubrik