Search
نمایش تعداد 1-10 از 48
Unique microstructure analysis of ethylene-propylene copolymer synthesized using catalytic system based on α-diimine nickel complexes: a comparative study by 13 C NMR technique
that the MN4 EP copolymer had fewer alternating comonomer sequences than ethylene-propylene elastomers obtained by CGC and vanadium-based (V) catalysts. A large number of the inversion structures (66 %) and high mole percent of sequences containing a long...
Application of a New Specimen Geometry on Rapid Gas Decompression (RGD) Test
Elastomers used in gas transmission field such as seals, diaphragms, O-rings and sleeves are very important pieces which may be damaged in operating conditions. According to ISO 23936-2 standard, O-ring specimen is applied for RGD test...
Synthesis and Microstructurral Study of Stereoblock Elastomeric Polypropylenes from Metallocene Catalyst (2-PhInd)2ZrCl2 Activated with Cocatalyst Mixtures
Various elastomeric polypropylenes (PPs) are synthe-
sized through homogeneous propylene polymerization with met-
allocene catalyst (2-PhInd)2ZrCl2 in the presence of different
cocatalyst mixtures: ...
Vibration attenuation of rotor-bearing systems using smart electro-rheological elastomer supports
Nowadays, capability of safe operation suiciently away from the critical speeds is one of the most important design requirements of rotating machineries. The focus of this paper is the application of smart electro-rheological -ER- elastomers to
...
A new approach for silane curing metallocene-based polyethylene-octene copolymers by Monosil and Sioplas processes
The silane grafted compound need to be storage under approprate conditions in order to be avioded from any premature crosslinking reactions, which is a necessary requirement for re-extruding the silane grafted compounds ...
Comparison of Adaptive magnetorheological elastomer isolator and elastomeric isolator in Near-Field and Far-Field earthquakes
Magnetorheological elastomer (MRE) materials are widely used in the development of smart isolators and absorbers due to their stiffness and damping adaptability. This study investigates the performance of MRE isolators and elastomeric isolators from...