enhancement of the mechanical properties of directly spun

"Synthesis and Mechanical Properties of Metallic

Oct 29, 2019 · The consequences of this work bears directly on the fields of electrical contacts, sliding wear, and even enhancement of bulk materials strength. We have found that Cu-Ni compositionally modulated alloys can exhibit a hardness of over 500 Hv which corresponds to breaking stresses over 1.5 GPa.

3D printed mesh reinforcements enhance the mechanical

Nov 29, 2019 · SEM imaging of reinforced electrospun scaffolds. As a strategy for improving the mechanical properties of electrospun substrates, 3D-printing was used to deposit a PLA mesh reinforcement on one side of PCL/gelatin scaffolds (schematic diagram in Fig. 1).Two types of PLA reinforcements were generated, one with a 6 mm distance between struts; the other with Controlling Electrospun Nanofiber Morphology and resulting properties of electrospun nanofibers can be manip-ulated by a number of variables. These parameters can be classified as solution properties, process conditions and am-bient parameters. It was found that solution properties can affect the surface morphology of electrospun fibers. Gener-

Direct spinning and densification method for high

Jul 04, 2019 · The results indicate that the CSA densification can effectively maximize the mechanical properties of CNTFs as long as as-spun CNTF has a low defect density. The maximum specific tensile strength Effect of Fiber Cross-Sectional Shape and Nano ZnO Antibacterial polypropylene cross-sectional shape fibers were melt spun with adding nano ZnO and modified chitosan. Two types of fiber cross-section, round and worm cross-sectional shape were studied including with nano ZnO and modified chitosan loading. Antibacterial properties, surface area, and fiber crystalization were investigated. The surface area of the fiber and

Electrical Properties Enhancement of Carbon Nanotube Yarns

Carbon nanotube yarns (CNTYs) possess low density, high conductivity, high strength, and moderate flexibility. These intrinsic properties allow them to be a preferred choice for use as conductive elements in high-performance composites. To fully exploit their potential as conductive reinforcing elements, further improvement in their electrical conductivity is needed. Enzymatically fibrillated cellulose pulp-based Nov 21, 2016 · Enzymatically fibrillated cellulose pulp-based monofilaments spun from water; enhancement of mechanical properties and water stability S., Auvinen, H., Orelma, H. et al. Enzymatically fibrillated cellulose pulp-based monofilaments spun from water; enhancement of mechanical properties and water stability. Cellulose 24, 871887 (2017

Enzymatically fibrillated cellulose pulp-based

Nov 21, 2016 · Read "Enzymatically fibrillated cellulose pulp-based monofilaments spun from water; enhancement of mechanical properties and water stability, Cellulose" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Mechanical Properties of Carbon Nanotubes-Polymer Jul 20, 2016 · Carbon nanotubes (CNTs), as a one-dimensional material, have outstanding mechanical properties such as extreme tensile strength and Youngs modulus. At present, to prepare pure CNTs materials is quite difficult and the mechanical properties of the materials are limited in a low level. Because of their extraordinary mechanical properties and high aspect

Microstructure Evolution and Mechanical Properties of Melt

However, the microstructure formation mechanism of the spun ribbon and its effects on the mechanical properties are still unclear. Here, we report the microstructure evolution and mechanical properties of La-Fe-Co-Sb skutterudite alloys fabricated by both long-term annealing and melt-spinning, followed by sintering approaches. Post Processing Strategies for the Enhancement of Electrospinning is a versatile technique which results in the formation of a fine web of fibers. The mechanical properties of electrospun fibers depend on the choice of solution constituents, processing parameters, environmental conditions, and collector design. Once electrospun, the fibrous web has little mechanical integrity and needs post fabrication treatments for enhancing its mechanical

Preparation and properties of meltspun poly(fluorinated

A significant enhancement of mechanical properties of the composite fibers was obtained at low GE content, that, a 35.5% improvement of tensile strength and a 19.5% increase of Young's modulus were achieved at a GE content of only 0.3 wt%. Compared with pure FEP fibers, the oil affinity of composite fibers was also significantly improved. Properties of Sn-Ag-Cu Solder Joints Prepared by Induction

  • AbstractIntroductionMaterials and MethodsResults and DiscussionConclusionsData AvailabilityAcknowledgmentsIn the present work, one near-eutectic and three hypoeutectic Sn-Ag-Cu alloys have been employed for soldering by induction heating. The alloys were produced by induction melting of high purity Ag, Cu, and Sn lumps. The melting behavior of the alloys was investigated by differential scanning calorimetry. The solder alloys were subsequently applied for soldering by conventional hot-plate heating as well as induction heating and both soldering times and peak Easy preparation of self-assembled high-density buckypaper A controlled assembly and alignment of carbon nanotubes (CNTs) in a high-packing density with a scalable way remains challenging. This paper focuses on the preparation of self-assembled and well-aligned CNTs with a densely packed nanostructure in the form of buckypaper via a simple filtration method. The CNT suspension concentration is strongly reflected in the alignment and

    Purification effect of carbon nanotube fibers on their

    Mar 01, 2021 · The sonication processes are able to remove impurities from CNT fibers from 11 to 4.5%, resulting in the 1.52.0 and 3.0 fold enhancement in mechanical and electrical properties, respectively. However, the sonication can cause the formation of defects in the sp 2 carbon structures and disturb the alignment of CNT fibers. The Joule heating and acid washing Safdar Eskandarnejad - Google ScholarEffect of a change in a fibre path from one end of the transport channel to the rotor wall on rotor-spun yarn properties SS Mireshghi, S Eskandarnejad, H Ehzadan, M Bameni Moghadam Vlákna a textil 12 (4), 156-161 , 2005

    Structures, mechanical properties and applications of silk

    Jul 01, 2015 · This strategy for enhancing the mechanical properties is based on the use of electric field to align the liquid-crystals (i.e., the water-soluble liquid crystalline state) of silk fibroin in the silk gland. Electric field has been shown to be able to align protein dipoles along the direction of the field [84]. Super enhancement of rheological properties of amorphous May 13, 2021 · Blends containing 85 wt. % of an amorphous polylactide with 15 wt. % of three different semicrystalline PLA (cPLA) grades with different crystallizabilty were separately blended via a twin-screw ex

    Synthesis, property, and application of carbon nanotube

    Jan 19, 2021 · The properties of CNTFs have been improved remarkably (Fig. 6). The highest mechanical strength that has been achieved is 9.8 GPa and the highest specific strength is 5.5 N/tex . This specific strength was obtained by synthesizing CNTF by direct spinning method, then densifying them after swelling and stretching in CSA and coagulating in acetone. Tensile and interfacial properties of dry-jet wet-spun and Apr 09, 2019 · While, in the wet spun, fiber is spun out from spinneret plate directly into the coagulation bath, results into a thick and rough skin layer with grooves. 17,18 Meanwhile, both dry-jet wet-spun and wet-spun carbon fibers have been used in aerospace industry or fuel tanks. Their mechanical behaviors in cryogenic condition are very critical for

    Thermoplastic Recycling:Properties, Modifications, and

    Sep 27, 2019 · The enhancement in mechanical properties and performance of the HDPE matrix and composite product by additives In industrial process, plastic waste is fed into the reactor directly through hopper for melting in pyrolysis reactor with high melting point (300°C and above, depending on the types of plastic). The mechanical properties of Enhancement of Mechanical Properties of Melt-spun solidification for the Improvement of mechanical properties through the increasing of solid solubility boundary, the refinement of microstructure, and scattering of the second phase. In many alloy systems, they give useful improvements in electrical, mechanical and other properties. In this way, rapid sclerosis

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