نتایج جستجو برای: rigid polyether urethane foam
تعداد نتایج: 63518 فیلتر نتایج به سال:
objective: the present study was aimed to correlate the clinical tests with the laboratory measures under dual task conditions in parkinson's disease (pd). materials and methods: eleven people with idiopathic pd (modified hoehn and yahr scores 1-3) were selected by simple non-probability sampling. center of pressure (cop) data obtained by force platform was used to calculate mean total velocity...
Conversion of the monovalent polyether antibiotic monensin into a series of urethane derivatives substituted at C-26 causes a ten-fold increase in the cation transporting properties of the antibiotic as well as making the resulting semisynthetic urethanes divalent ionophores. These changes must in part account for the enhanced antimicrobial activities of the urethanes. The most active derivativ...
Polyglycerols are a class of multifunctional polymers obtained from the polymerization glycidol and its derivatives. Unlike poly(ethylene glycol) (PEG), which is most common polyether, polyglycerols can exhibit many functionalities on their side chains be renewable resources, mainly glycerol. Hereby, this study will focus glycidyl carbamates, new monomers readily available glycerol carbonate, c...
A comprehensive study on the compressive uniaxial mechanical response of the polymer Adiprene-L100, a polyether urethane-based rubber, is presented. Quasi-static and dynamic experiments, under compression, were performed at a wide range of strain rates (10 54"45000 s ) and temperatures ( 1004T4270 F). The behavior of the polymer was found to be nonlinear and highly dependent on both, strain rat...
Taking into account numerous results from the literature, an in-depth exploratory study on chemical gradients in rise (or depth) direction was performed polyisocyanurate rigid (PIR) foam insulation panels using ATR-FTIR spectroscopy. In particular, it found that isocyanurate/phenyl ratio is a quick and effective technique for providing indication of level trimer conversion within each sample. M...
THE EFFECT OF E-GLASS FIBERS AND PHLOGOPITE MICA ON THE MECHANICAL PROPERTIES AND DIMENSIONAL STABILITY OF RIGID PVC FOAMS by Murtatha M. Jamel The University of Wisconsin-Milwaukee, 2015 Under the Supervision of Professor Nidal Abu-Zahra Short E-Glass Fibers (GF) and Phlogopite Mica (M) were used separately and simultaneously to enhance the dimensional stability and mechanical properties of ex...
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