Transparente polykristalline Keramiken sind eine interessante Alternative zu den etablierten monokristallinen Werkstoffen und optischen Gläsern. Spinell-Keramik als Vertreter dieser sprödharten Werkstoffgruppe überzeugt durch eine hohe Transmission in einem weiten Wellenlängenbereich und durch eine hohe mechanische und thermische Stabilität. Die Ob...
Published in Tenside Surfactants Detergents
In this paper, monododecyl diphenyl ether disulfonate (C12-MADS) and didodecyl diphenyl ether disulfonate (C12-DADS) are Friedel-Craft reaction product of 1-dodecene and diphenyl oxide using sulfated zirconium as a catalyst, followed by sulfonation with fuming sulfuric acid in 1,2-dichloroethane and neutralization with aqueous sodium hydroxide solu...
The origin of fiber print-through is commonly based on the influence of temperature during cure and post cure thermal treatments on polymeric matrix systems due to chemical and thermal shrinkage. Furthermore, it is proven that especially polymeric matrices are hygroscopic and therefore, have a disposition to soak up water in surroundings with a hig...
The energy consumption of milling operations is influenced by several interacting parameters. To increase productivity and energy effciency of related machining tasks, different methods like optimization of machining parameters, new machining strategies and innovative cutting edge geometries for tools are already available.Regarding clamping chucks,...
Fibre print-through on the surfaces of composites emerges as a consequence of the heterogeneous mix of matrix and reinforcing fibres and is one of the obvious surface imperfections that differentiates them from conventional materials. Visible surfaces in the body shell of vehicles demand high Class A requirements without any surface imperfections. ...
Published in Tenside Surfactants Detergents
Oils from coconut, peanut, and soybean were reacted as acyl donors with sodium glycinate to synthesize acyl glycine surfactants. From these three oils a series of acyl glycines with different acyl chain lengths was obtained. The proportion of each component was consistent with the composition of fatty acids derived from the three vegetable oils. Th...
Die Elllipsometrie ist ein Verfahren, das sich zur Messung ultradünner Schichten eignet. Allerdings ist das Verfahren in herkömmlichen Aufbauten nicht oder nur in Ausnahmefällen bei gekrümmten Oberflächen anwendbar. Vorgestellt wird ein als Prototyp entwickeltes Prüfsystem, das die Einschränkungen überwindet und zum Beispiel keine präzise Ausrichtu...
Six organic coating systems are investigated according to their performance under Arctic offshore conditions. Four performance groups are considered: corrosion protection performance, performance under mechanical loads, surface status, and icing performance. The investigations involve the following tests: accelerated corrosion protection/ageing tes...
The market for transparent and conductive layers has grown remarkably during the past few years. The key drivers were consumer electronics and photovoltaics. Recent developments show a trend for products which are bendable or have complex 3D surfaces. Such applications need flexible and transparent electrodes. The state of the art materials cannot ...
