Wyniki wyszukiwania dla: THERMOPLASTIC POLYURETHANE COMPOSITES
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Structure and Stability Characterization of Natural Lake Pigments Made from Plant Extracts and Their Potential Application in Polymer Composites for Packaging Materials
PublikacjaNatural dyes were extracted from various plant sources and converted into lake pigments based on aluminum and tin. Three different plants (weld, Persian berries, and Brazilwood) were chosen as representative sources of natural dyes. High-performance liquid chromatography (HPLC) and triple-quadrupole mass spectrometry (QqQ MS) were used to identify dyestuffs in the raw extracts. The natural dyes and lake pigments were further characterized...
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Surface modification of PMMA polymer and its composites with PC61BM fullerene derivative using an atmospheric pressure microwave argon plasma sheet
PublikacjaThis paper presents the results of experimental investigations of the plasma surface modification of a poly(methyl methacrylate) (PMMA) polymer and PMMA composites with a [6,6]-phenyl-C61-butyric acid methyl ester fullerene derivative (PC61BM). An atmospheric pressure microwave (2.45 GHz) argon plasma sheet was used. The experimental parameters were: an argon (Ar) flow rate (up to 20 NL/min), microwave power (up to 530 W), number...
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The mechanical properties and conduction of solid polyurethane electrolytes depending on the methods of synthesis and LiClO4 content as addition
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Effect of bio-polyol molecular weight on the structure and properties of polyurethane-polyisocyanurate (PUR-PIR) foams
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Effect of Porosity on the Thermo-Mechanical Behavior of Friction-Stir-Welded Spark-Plasma-Sintered Aluminum Matrix Composites with Bimodal Micro- and Nano-Sized Reinforcing Al2O3 Particles
PublikacjaThe thermo-mechanical behavior of nanosized Al2O3 particles reinforcing aluminum was analyzed in the present paper. The material was prepared by spark plasma sintering and friction stir welding. The thermal stresses affecting the composite behavior during welding were modeled through COMSOL MultiPhysics, and the results were validated by the analyses of the composites’ mechanical properties. The spark-plasma-sintered materials...
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Structure and magnetic properties of BeO-Fe2O3-Al2O3-TeO2 glass-ceramic composites
PublikacjaIn this work, glass-ceramics in the xBeO–20Fe2O3–(80-x)TeO2 system with x = 0–25 mol% were synthesized by the traditional melt quenching route and studied by inductively coupled plasma optical emission spectroscopy, X-ray diffraction, confocal microscopy, infrared and Raman spectroscopy. BeO addition was found to support the crystallization process of Fe2O3 during melting, and an increased BeO content was associated with an increased...
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Environmentally friendly polymer-rubber composites obtained from waste tyres: A review
PublikacjaThe paper is transdisciplinary. The complex overview on changes in policy and approach to waste tyres that leads to both solving environmental problem of post consumer tyres and creating environmentally friendlier novel materials are presented. It is shown that in the world, the amount of polymer wastes increases every year. Most of them are in the form of post-consumer tyres. Recycling and recovery of such tyres is a serious environmental...
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Elastic-plastic properties of metal matrix composites: Validation of mean-field approaches
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Characterization of the Physical, Chemical, and Adsorption Properties of Coal-Fly-Ash–Hydroxyapatite Composites
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Manufacturing and investigation of physical properties of polyacrylonitrile nanofibre composites with SiO2, TiO2and Bi2O3nanoparticles
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Usefulness of Mercury Porosimetry to Assess the Porosity of Cement Composites with the Addition of Aerogel Particles
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Response of inflammatory cells to biodegradable ultra-fine grained Mg-based composites
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Properties of ultrafine-grained Mg-based composites modified by addition of silver and hydroxyapatite
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Sliding Wear Performance of AlCrN Coating on TiB2/Ti Composites at High Temperatures
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Biobased Polyethylene Hybrid Composites with Natural Fiber: Mechanical, Thermal Properties, and Micromechanics
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SEM and TEM Studies on <i>In-Situ</i> Cast Al–TiC Composites
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Structure Analysis of the Modified Cast Metal Matrix Composites by Use of the Rve Theory
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Synthesis and thermal characterization of luminescent hybrid composites based on bisphenol A diacrylate and NVP
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MXene-based composites for capacitive deionization – The advantages, progress, and their role in desalination - A review
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Organic-inorganic composites consisted of poly(3,4-ethylenedioxythiophene)and Prussian Blue analogues
PublikacjaThe organic-inorganic material consisted of poly(3,4-ethylenedioxythiophene) (pEDOT) and copper hexacyanoferrate (Cuhcf) was synthesized. The pEDOT film with Fe(CN)63−/4− as counter-ions potentiodynamically polarized in aqueous CuCl2 electrolyte brings about stable hybrid material (pEDOT/Cuhcf) performing single redox activity of FeII/III at a formal potential Ef = 0.61 V (vs. Ag/AgCl/0.1 M KCl) and less clearly shaped two redox...
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On delamination threshold loads in low velocity impact on glass-carbon/epoxy composites.
PublikacjaZbadano możliwości zastąpienia badań udarowych o niskiej energii ze spadającą masą badaniami quasi-statycznymi przy analogicznym obciążeniu próbki dla laminatów epoksydowych wzmocnionych włóknami węglowymi i szklanymi oraz węglowymi. Uzyskano dobrą zgodność wyników obu typów badań , co znajduje potwierdzenie w wynikach innych badaczy.
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Post-impact moisture absorption in hybrid glass, aramid, carbon/epoxy composites
PublikacjaZbadano chłonność wody i własności po udarze i absorpcji wody w laminatach hybrydowych aramidowo-szklano-węglowych. Badania porównawcze dla laminatów szklano-epoksydowych wykazały 18% i 33% spadek wytrzymałości na ściskanie odpowiednio w wyniku udaru o energii 10J oraz udaru i absorpcji wody.
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Use of clinoptilolite for the immobilization of heavy metal ions and preparation of autoclaved building composites
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The effect of nanomaterials on thermal resistance of cement-based composites exposed to elevated temperature
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Enhanced thermal properties of poly(lactic acid)/MoS2/carbon nanotubes composites
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Advanced Composites and Hybrid Materials
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Tailoring diamondised nanocarbon-loaded poly(lactic acid) composites for highly electroactive surfaces: extrusion and characterisation of filaments for improved 3D-printed surfaces
PublikacjaA new 3D-printable composite has been developed dedicated to electroanalytical applications. Two types of diamondised nanocarbons - detonation nanodiamonds (DNDs) and boron-doped carbon nanowalls (BCNWs) - were added as fillers in poly(lactic acid) (PLA)-based composites to extrude 3D filaments. Carbon black served as a primary filler to reach high composite conductivity at low diamondised nanocarbon concentrations (0.01 to 0.2...
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Insights into the Thermo-Mechanical Treatment of Brewers’ Spent Grain as a Potential Filler for Polymer Composites
PublikacjaThis paper investigated the impact of twin-screw extrusion parameters on the properties of brewers’ spent grain. The chemical structure, antioxidant activity, particle size, and color properties, as well as the emission of volatile organic compounds during extrusion, were investigated. The main compounds detected in the air during modifications were terpenes and terpenoids, such as α-pinene, camphene, 3-carene, limonene, or terpinene....
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Composites of tin oxide and different carbonaceous materials as negative electrodes in lithium-ion batteries
PublikacjaAbstract Tin and tin oxide have been considered as suitable materials with high theoretical capacity for lithium ion batteries. Their low cost, high safety and other technical benefits placed them as promising replacements for graphite negative electrodes. The problem to overcome with tin oxide, as well as with other metallic materials, is high volume changes during alloying/dealloying, subsequent pulverization, delamination from...
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Investigation of machinability of Ti–B-SiCp reinforced Cu hybrid composites in dry turning
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Influence of mechanochemical treatment on thermal and structural properties of silica–collagen and hydroxyapatite–collagen composites
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Degradation and damage of advanced polymer composites due to environmental effects and low velocity impact
PublikacjaPrzedstawiono zagadnienie wpływu srodowiska wody oraz niskoenergetycznego udaru na właściwości mechaniczne laminatów epoksydowych wzmocnionych włóknami węglowymi, szklanymi, aramidowymi i hybrydowymi. Na tle krótkiego przeglądu literatury na dany temat przedstawiono oryginalne wyniki badań eksperymentalnych autorki.
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The effect of low energy impact on the tensile strength of coated and uncoated glass particulate composites.
PublikacjaPrzedstawiono model teoretyczny pozwalający przewidywać poudarową wytrzymałość na rozciąganie w funkcji parametrów materiałowych i budowy kompozytu. Określono eksperymentalnie poudarową wytrzymałość na ściskanie kompozytów zbrojonych ciągłym włóknem szklanym w osnowie żywicy epoksydowej napełnianej mikrokulkami szklanymi w celu obniżenia skłonności do powstawania dużych zniszczeń przy udarze o niskiej energii. Wyniki eksperymentalnie...
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The comparison of SrTi0.98Nb0.02O3-δ-CeO2 and SrTi0.98Nb0.02O3-δ-YSZ composites for use in SOFC anodes
PublikacjaWytworzono i przebadano właściwości strukturalne i elektryczne kompozytów SrTi0.98Nb0.02O3-δ-CeO2 i SrTi0.98Nb0.02O3-δ-YSZ. Przeprowadzono testy materiałów zastosowanych jako anody w tlenkowych ogniwach paliwowych.
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Microstructure and electrical properties of SrTi0.98Nb0.02O3-δ-based composites applied as porous layers for SOFCs
PublikacjaPrzebadano właściwości elektryczne oraz strukturalne kompozytów Sr(Ti,Nb)O3-YSZ i Sr(Ti,Nb)O3-CeO2 naniesionych w postaci warstw porowatych na podłoża YSZ
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Application of the nanoindentation method in assessing of properties of cement composites modified with silica-magnetite nanostructures
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High-density polyethylene/EPDM rubber blend composites of boron compounds for neutron shielding application
PublikacjaNovel materials with neutron shielding property were fabricated by incorporating boron compounds into highdensity polyethylene (HDPE)/Ethylene propylene diene monomer rubber (EPDM) blends. A detailed investigation on the morphological, thermal, mechanical, and neutron attenuation properties of suitable proportion of HDPE/EPDM blend with boric acid (BA), boron carbide (BC), and nano boron carbide (NBC) were performed. Morphology...
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Giant Reed (Arundo donax L.) Fiber Extraction and Characterization for Its Use in Polymer Composites
PublikacjaThis work describes an extraction method for giant reed fibers from stems and leaves based on chemical soaking and crushing through a rolling mill. Obtained fibers, together with the shredded plant (stems + leaves), are characterized in terms of chemical composition, thermal stability, morphology, and crystallinity. Mechanical properties of fibers have also been assessed (single fiber tensile tests). The results show that the proposed...
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Impact performance of novel multi-layered prepacked aggregate fibrous composites under compression and bending
PublikacjaMulti-layered Prepacked aggregate fibrous composite (MLPAFC) is a new type of concrete, which is prepared in two subsequent stages of aggregate-fibre skeleton prepacking and cementitious grouting. In this study, ten MLPAFC mixtures were prepared in three subsequent layers incorporating different contents of four different types of steel fibres. Long and short hooked-end and crimped steel fibers were adopted with 3.0 and 1.5% dosages...
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Cure Index demonstrates curing of epoxy composites containing silica nanoparticles of variable morphology and porosity
PublikacjaAn image was taken by Cure Index on curability of epoxy with silica nanoparticles having variable morphology and porosity. Three kinds of silica nanoparticles with non-porous curved-rod, non-porous spherical, and mesoporous spherical microstructures were synthesized and characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy (SEM) and Brunauer–Emmett–Teller analyses. Epoxy nanocomposites containing...
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Synthesis and Testing of BCZY/LNZ Mixed Proton–electron Conducting Composites for Fuel Cell Applications
PublikacjaA composite of BaCe0.6Zr0.2Y0.2O3–δ and Li2O:NiO:ZnO was investigated for fuel cell applications. The composite was successfully synthesized and its phase stability was confirmed at temperatures up to 900 °C. The influence of sintering and pressing aids on density was also investigated. Electrical properties were measured. DC electrical conductivity was about 8•10-4 S/m at 845 K. Open circuit voltage measurements in wet hydrogen...
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Composites of polylactide and nano-hydroxyapatite created by cryomilling and warm isostatic pressing for bone implants applications
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Enhanced sunlight photo-catalytic performances of ZnO/ZnNb2O6/Nb2O5 composites for organic pollutant degradation
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Multifunctional Polymer Composites Produced by Melt-Blown Technique to Use in Filtering Respiratory Protective Devices
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The Effects of Textural Parameters of Zeolite and Silica Materials on the Protective and Functional Properties of Polymeric Nonwoven Composites
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Surface Properties and Photocatalytic Activity of KTaO3, CdS, MoS2 Semiconductors and Their Binary and Ternary Semiconductor Composites
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Synthesis and structural properties of carbon/alumina composites: Practical application in solid phase extraction of explosives
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Cast aluminium matrix composites modified with using FSP process – Changing of the structure and mechanical properties
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Recycled polyethylene and crumb rubber composites modified asphalt with improved aging resistance and thermal stability
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Effect of particle size on the flame retardancy of poly(butylene succinate)/Mg(OH)2 composites
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