دانلود رایگان مقاله لاتین چاپ 3d از نانو لوله کربن از سایت الزویر
عنوان فارسی مقاله:
چاپ 3D از نانو لوله های کربنی چند منظوره اجزای مقاوم
عنوان انگلیسی مقاله:
3-D printing of multifunctional carbon nanotube yarn reinforced components
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Carbon nanotubes (CNTs) are high aspect ratio nanoscale tubes whose atomic structure imparts a unique suite of mechanical, electrical and thermal characteristics [1] not usually possessed by a single material. Since their novelty was recognized over twenty years ago [2], this distinctive feature has led to visions of multifunctional materials and structures [3-6]. Early availability in powder form limited their utility to light doping of polymeric matrices to yield nanocomposites, thin films, and coatings with enhanced electrical properties sufficient for applications like electrostatic charge dissipation and electromagnetic shielding [7-10]. Until recently, the big payoff in multifunctional load bearing applications has beenchallenging to attain due to the lack of bulk material formats that retain the attractive mechanical properties for which CNTs were heralded. The material is now available in commercial quantities of sheets and yarns [11] with mechanical properties that support their use as structural reinforcement [12-17], and electrical conductivity sufficient for data cables [18]. Spun yarns with good mechanical properties have also been shown to carry useful levels of current [19]. The advent of 3-D printing by fused deposition modeling (FDM) [20] or fused filament fabrication (FFF) permits the fabrication of geometrically complex parts inaccessible by conventional manufacturing techniques. Low cost, open-source 3D printers have provided easy access to a technique that can produce novel, topologically optimized functional components [21, 22]. Open-source machines typically use acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) feedstocks [23]. Higher performance filaments like Ultem® (polyetherimide) generally require more expensive FDM equipment due to the higher processing temperatures required. Feedstocks for multifunctional materials in AM have followed the initial trend in CNT nanocomposites using low volume fractions of dispersed CNTs. Filaments with low concentrations of graphene [24], graphene oxide [25] and metal particles [26] in a matrix have been studied. Conductive inks have also been used where conductive paths were desired [27-29]. Continuous carbon fiber, Kevlar® and glass fibers [30, 31] have been used to enhance part stiffness. The above set of feedstocks imparts only one functionality; therefore, a printer designed to combine the features offered by several of these materials in a part will require multiple print heads to accommodate different feedstock processing conditions. In contrast, CNTs offer the possibility of using a single material to tailor functionality with two print heads that can selectively lay down unreinforced and CNT reinforced elements in a part.
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کلمات کلیدی:
3-D printing of multifunctional carbon nanotube yarn reinforced ... www.sciencedirect.com/science/article/pii/S2214860416301270 by JM Gardner - 2016 - Cited by 4 - Related articles Continuous carbon nanotube (CNT) yarn filaments can be employed as an inherently multifunctional feedstock for additive manufacturing (AM). With this ... 3D printing of multifunctional nanocomposites - ScienceDirect www.sciencedirect.com/science/article/pii/S1748013212001399 by TA Campbell - 2013 - Cited by 84 - Related articles Jan 26, 2013 - Additive manufacturing (aka, 3D printing) holds strong potential for the formation of a new class of multifunctional nanocomposites. With the ... Three-Dimensional Printing of Multifunctional Nanocomposites - NCBI https://www.ncbi.nlm.nih.gov/pubmed/27135923 by RD Farahani - 2016 - Cited by 26 - Related articles May 2, 2016 - The integration of nanotechnology into three-dimensional printing (3DP) offers huge potential and opportunities for the manufacturing of 3D ... Towards 3D printed multifunctional immobilization for proton therapy ... https://www.ncbi.nlm.nih.gov/pubmed/27782703 by S Michiels - 2016 - Related articles PURPOSE: 3D printing technology is investigated for the purpose of patient immobilization during proton therapy. It potentially enables a merge of patient ... 3D printing of multifunctional materials – Complex Materials | ETH Zurich www.complex.mat.ethz.ch/our-group/.../3d-printing-of-multifunctional-materials.htm... The Laboratory for Complex Materials is currently searching for potential candidates for a doctoral position on 3D printing of multifunctional materials. 7 Best All-In-One 3D Printers in 2017 | All3DP https://all3dp.com/1/all-in-one-laser-3d-printer-scanner-cutter-engraver-cnc/ Apr 17, 2017 - All-in-one 3D printer combos (3D printer, 3D scanner, laser engraver or CNC ... Symme3D is hard at work on a multifunctional delta 3D printer. Prototyping a Multifunctional Walker with 3D Printing | All3DP https://all3dp.com/multifunctional-walker/ Feb 8, 2017 - Designer Eliza Wrobel created a multifunctional walker prototype using a 3D printer to help disabled people who want to remain active.
