نتایج جستجو برای: bimodal polyethylene
تعداد نتایج: 40016 فیلتر نتایج به سال:
The effect of blending a small amount high-density polyethylene (HDPE) on molecular entanglements during melt-drawing ultrahigh-molecular-weight (UHMW-PE) was investigated in this study. UHMW-PE powders with HDPE added and bimodal MW distribution were synthesized by reactor blending. In situ wide-angle X-ray diffraction small-angle scattering measurements UHMW-PE/HDPE films performed to evaluat...
We make use of a specially synthesized linear high density polyethylene with a bimodal molecular weight distribution (MWD) to demonstrate that it is possible to produce a suspension of extended-chain (shish) crystals only. Such a suspension can be generated at high temperatures, above but close to the equilibrium melting temperature of the unconstrained extended-chain crystals (T(m)(0)=141.2 de...
eethylene polymerization catalysts became available in an enormous variety. the challenge in this research is to find catalysts that are able to connect ethylene molecules in such a way that not only linear chains are produced but variations like branched materials that possess very interesting mechanical properties like linear low density polyethylene (lldpe). in this contribution, three diffe...
Bis(phenoxy-imine) complexes of zirconium or titanium, a type Fenokishi-Imin catalysts, allow the production polyethylenes with well-defined bimodal molecular weight distributions. Interestingly, by substitution phenyl rings in bis(phenoxy-imine) ligands perfluorinated rings, polymerization reaches desired unimodal behavior. These catalysts have three isomers similar energy that can be easily i...
Gaze-independent event-related potential (ERP) based brain-computer interfaces (BCIs) yield relatively low BCI performance and traditionally employ unimodal stimuli. Bimodal ERP-BCIs may increase BCI performance due to multisensory integration or summation in the brain. An additional advantage of bimodal BCIs may be that the user can choose which modality or modalities to attend to. We studied ...
Bilingual children develop sensitivity to the language used by their interlocutors at an early age, reflected in differential use of each language by the child depending on their interlocutor. Factors such as discourse context and relative language dominance in the community may mediate the degree of language differentiation in preschool age children. Bimodal bilingual children, acquiring both ...
This study aims to develop a novel technique in manufacturing nanocomposite bimodal foams containing expandable polymeric microballoons. Low density polyethylene syntactic were prepared via injection molding process, afterwards, batch refoaming method was utilized create structure. The effects of microballoon and nanoclay content foaming time temperature on microstructure physical properties in...
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