355 results match your criteria Advanced Composite Materials[Journal]

Graphene/PVDF Composites for Ni-rich Oxide Cathodes Toward High-Energy Density Li-ion Batteries.

Materials (Basel) 2021 Apr 27;14(9). Epub 2021 Apr 27.

SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, Suwon 16419, Korea.

Li-ion batteries (LIBs) employ porous, composite-type electrodes, where few weight percentages of carbonaceous conducting agents and polymeric binders are required to bestow electrodes with electrical conductivity and mechanical robustness. However, the use of such inactive materials has limited enhancements of battery performance in terms of energy density and safety. In this study, we introduced graphene/polyvinylidene fluoride (Gr/PVdF) composites in Ni-rich oxide cathodes for LIBs, replacing conventional conducting agents, carbon black (CB) nanoparticles. Read More

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Clinching of Thermoplastic Composites and Metals-A Comparison of Three Novel Joining Technologies.

Materials (Basel) 2021 Apr 28;14(9). Epub 2021 Apr 28.

Institute of Lightweight Engineering and Polymer Technology, Technische Universität Dresden, Holbeinstraße 3, 01307 Dresden, Germany.

Clinching continuous fibre reinforced thermoplastic composites and metals is challenging due to the low ductility of the composite material. Therefore, a number of novel clinching technologies has been developed specifically for these material combinations. A systematic overview of these advanced clinching methods is given in the present paper. Read More

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Design of Center Pillar with Composite Reinforcements Using Hybrid Molding Method.

Materials (Basel) 2021 Apr 20;14(8). Epub 2021 Apr 20.

Department of Nanomechatronics Engineering, Pusan National University, Pusan 46241, Korea.

Recently, with the increase in awareness about a clean environment worldwide, fuel efficiency standards are being strengthened in accordance with exhaust gas regulations. In the automotive industry, various studies are ongoing on vehicle body weight reduction to improve fuel efficiency. This study aims to reduce vehicle weight by replacing the existing steel reinforcements in an automobile center pillar with a composite reinforcement. Read More

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Preparation and Thermal Conductivity of Epoxy Resin/Graphene-FeO Composites.

Materials (Basel) 2021 Apr 16;14(8). Epub 2021 Apr 16.

Tianjin Key Laboratory of Composite and Functional Materials, School of Material Science and Engineering, Tianjin University, Tianjin 300072, China.

By modifying the bonding of graphene (GR) and FeO, a stable structure of GR-FeO, namely magnetic GR, was obtained. Under the induction of a magnetic field, it can be orientated in an epoxy resin (EP) matrix, thus preparing EP/GR-FeO composites. The effects of the content of GR and the degree of orientation on the thermal conductivity of the composites were investigated, and the most suitable FeO load on GR was obtained. Read More

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Nanostructured Iron Sulfide/N, S Dual-Doped Carbon Nanotube-Graphene Composites as Efficient Electrocatalysts for Oxygen Reduction Reaction.

Materials (Basel) 2021 Apr 23;14(9). Epub 2021 Apr 23.

School of Energy & Chemical Engineering, Ulsan National University of Science and Technology (UNIST), Ulsan 44919, Korea.

Nanostructured FeS dispersed onto N, S dual-doped carbon nanotube-graphene composite support (FeS/N,S:CNT-GR) was prepared by a simple synthetic method. Annealing an ethanol slurry of Fe precursor, thiourea, carbon nanotube, and graphene oxide at 973 K under N atmosphere and subsequent acid treatment produced FeS nanoparticles distributed onto the N, S-doped carbon nanotube-graphene support. The synthesized FeS/N,S:CNT-GR catalyst exhibited significantly enhanced electrochemical performance in the oxygen reduction reaction (ORR) compared with bare FeS, FeS/N,S:GR, and FeS/N,S:CNT with a small half-wave potential (0. Read More

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Polysiloxane Bonded Silica Aerogel with Enhanced Thermal Insulation and Strength.

Materials (Basel) 2021 Apr 19;14(8). Epub 2021 Apr 19.

Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China.

In order to improve the mechanical properties of SiO aerogels, PHMS/VTES-SiO composite aerogels (P/V-SiO) were prepared. Using vinyltriethoxysilane (VTES) as a coupling agent, the PHMS/VTES complex was prepared by conducting an addition reaction with polyhydromethylsiloxane (PHMS) and VTES and then reacting it with inorganic silica sol to prepare the organic-inorganic composite aerogels. The PHMS/VTES complex forms a coating structure on the aerogel particles, enhancing the network structure of the composite aerogels. Read More

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Improved Bacteriostatic and Anticorrosion Effects of Polycaprolactone/Chitosan Coated Magnesium via Incorporation of Zinc Oxide.

Materials (Basel) 2021 Apr 12;14(8). Epub 2021 Apr 12.

Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway.

Magnesium has been recognized as a groundbreaking biodegradable biomaterial for implant applications, but its use is limited because it degrades too quickly in physiological solutions. This paper describes the research on the influence of polycaprolactone (PCL)/chitosan (CS)/zinc oxide (ZnO) composite coating (PCL/CS/ZnO) on the corrosion resistance and antibacterial activity of magnesium. The PCL/CS film presented a porous structure with thickness of about 40-50 μm, while after incorporation of ZnO into the PCL/CS, a homogenous film without pores and defects was attained. Read More

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A State-of-the-Art Review on Advanced Joining Processes for Metal-Composite and Metal-Polymer Hybrid Structures.

Materials (Basel) 2021 Apr 10;14(8). Epub 2021 Apr 10.

Department of Naval Architecture and Marine Engineering, University of Michigan, Ann Arbor, MI 48109, USA.

Multi-materials of metal-polymer and metal-composite hybrid structures (MMHSs) are highly demanded in several fields including land, air and sea transportation, infrastructure construction, and healthcare. The adoption of MMHSs in transportation industries represents a pivotal opportunity to reduce the product's weight without compromising structural performance. This enables a dramatic reduction in fuel consumption for vehicles driven by internal combustion engines as well as an increase in fuel efficiency for electric vehicles. Read More

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Evaluation of Restorative Techniques for Vertically Fractured Roots.

Materials (Basel) 2021 Apr 21;14(9). Epub 2021 Apr 21.

Advanced Operative Dentistry-Endodontics, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata 951-8580, Japan.

The purpose of this study was to examine the effects of combining specific adhesive materials and various surface treatments on bonding durability and microleakage of vertically fractured roots. Adhesive models were prepared using bovine lower incisors. The experiment included the following five groups: SB-G group (control) (10% citric acid with 3% ferric chloride solution (10-3 solution) + an adhesive resin cement (4-META/MMA-TBB; Super-Bond)), EC group (self-cure bonding agent (UB) + core composite resin (EC)), EC-G group (10-3 solution + UB + EC), EC-P group (40% phosphate solution + UB + EC), and EC-E group (18% ethylenediaminetetraacetic acid (EDTA) solution + UB + EC). Read More

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Vacuum Brazing of C/C Composite and TiAl Intermetallic Alloy Using BNi-2 Brazing Filler Metal.

Materials (Basel) 2021 Apr 8;14(8). Epub 2021 Apr 8.

Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.

C/C composite was brazed to TiAl intermetallic compound using a commercial BNi-2 brazing filler metal under vacuum brazing condition. The brazing temperature was 1030~1150 °C and the holding time was 20 min. The joint interfacial microstructures and mechanical properties were studied, and the fracture behavior and joining mechanism were also investigated. Read More

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Preparation and Tribological Properties of Modified MoS/SiC/Epoxy Composites.

Materials (Basel) 2021 Apr 1;14(7). Epub 2021 Apr 1.

Science and Technology of Advanced Functional Composites Laboratory, Aerospace Research Institute of Materials & Processing Technology, Beijing 100076, China.

In order to improve the tribological properties of epoxy (EP), EP composites were prepared by filling different proportions of silicon carbide (SiC) particles and molybdenum disulfide (MoS) powder. SiC and MoS particle surfaces were modified by the silane coupling agent KH560 to improve dispersion and avoid agglomeration of the inorganic particles in the EP resin matrix. The effect of different proportions of modified MoS content on the tribological properties of SiC/EP composites, and the wear mechanism of the worn surface, were investigated when the filler content was fixed at 55 wt. Read More

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Design and Fabrication of Highly Porous Replicated Aluminum Foam Using Double-Granular Space Holder.

Materials (Basel) 2021 Mar 26;14(7). Epub 2021 Mar 26.

Department of Chemical Engineering, Ariel University, Ariel 40700, Israel.

Porous materials are widely employed in a wide variety of industrial applications due to their advanced functional performance. Porous aluminum is among the most attractive metallic materials. It can be produced using repeatable methods involving a replicated Al foam that also provides porosity control. Read More

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MOC Doped with Graphene Nanoplatelets: The Influence of the Mixture Preparation Technology on Its Properties.

Materials (Basel) 2021 Mar 16;14(6). Epub 2021 Mar 16.

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague, Czech Republic.

The ongoing tendency to create environmentally friendly building materials is nowadays connected with the use of reactive magnesia-based composites. The aim of the presented research was to develop an ecologically sustainable composite material based on MOC (magnesium oxychloride cement) with excellent mechanical, chemical, and physical properties. The effect of the preparation procedure of MOC pastes doped with graphene nanoplatelets on their fresh and hardened properties was researched. Read More

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UHMWPE-Based Glass-Fiber Composites Fabricated by FDM. Multiscaling Aspects of Design, Manufacturing and Performance.

Materials (Basel) 2021 Mar 19;14(6). Epub 2021 Mar 19.

Department of Mechanical and Industrial Engineering, Faculty of Engineering, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway.

The aim of the paper was to improve the functional properties of composites based on ultra-high molecular weight polyethylene (UHMWPE) by loading with reinforcing fibers. It was achieved by designing the optimal composition for its subsequent use as a feedstock for 3D-printing of guides for roller and plate chains, conveyors, etc. As a result, it was experimentally determined that loading UHMWPE with 17% high density polyethylene grafted with VinylTriMethoxySilane (HDPE-g-VTMS) was able to bind 5% glass fillers of different aspect ratios, thereby determining the optimal mechanical and tribological properties of the composites. Read More

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Experimental-Numerical Failure Analysis of Thin-Walled Composite Columns Using Advanced Damage Models.

Materials (Basel) 2021 Mar 19;14(6). Epub 2021 Mar 19.

Faculty of Mechanical Engineering, Technical University of Kosice, Letna 9, 042 00 Kosice, Slovakia.

The paper analyzes the stability and failure phenomenon of compressed thin-walled composite columns. Thin-walled columns (top-hat and channel section columns) were made of carbon fiber reinforced polymer (CFRP) composite material (using the autoclave technique). An experimental study on actual structures and numerical calculations on computational models using the finite element method was performed. Read More

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Damage Evolution and Fracture Behavior of C/SiC Minicomposites with Different Interphases under Uniaxial Tensile Load.

Materials (Basel) 2021 Mar 20;14(6). Epub 2021 Mar 20.

State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China.

In this paper, the tensile damage and fracture behavior of carbon fiber reinforced silicon carbide (C/SiC) minicomposites with single- and multiple-layer interphases are investigated. The effect of the interphase on the tensile damage and fracture behavior of C/SiC minicomposites is analyzed. The evolution of matrix cracking under the tensile load of the C/SiC minicomposite with a notch is observed using the digital image correlation (DIC) method. Read More

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Material Design for Optimal Postbuckling Behaviour of Composite Shells.

Materials (Basel) 2021 Mar 28;14(7). Epub 2021 Mar 28.

Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica, University of Calabria, 87030 Rende, Italy.

Lightweight thin-walled structures are crucial for many engineering applications. Advanced manufacturing methods are enabling the realization of composite materials with spatially varying material properties. Variable angle tow fibre composites are a representative example, but also nanocomposites are opening new interesting possibilities. Read More

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A New Method of Diatomaceous Earth Fractionation-A Bio-Raw Material Source for Epoxy-Based Composites.

Materials (Basel) 2021 Mar 28;14(7). Epub 2021 Mar 28.

Centre for Advanced Technologies, Adam Mickiewicz University in Poznań, ul. Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland.

The authors of this paper use an original method of diatomaceous earth fractionation, which allows for obtaining a filler with a specific particle size distribution. The method makes it possible to separate small, disintegrated and broken diatom frustules from those which maintained their original form in diatomaceous earth. The study covers a range of tests conducted to prove that such a separated diatomic fraction (3-30 µm) shows features different from the base diatomite (from 1 to above 40 µm) used as an epoxy resin filler. Read More

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Experimental Evaluation of PSC Structures from FRP with a Prestressing Strengthening Method.

Materials (Basel) 2021 Mar 7;14(5). Epub 2021 Mar 7.

Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283, Goyang-daero, Ilsanseo-gu, Goyang-si 10223, Gyeonggi-do, Korea.

A prestressed concrete (PSC) structure is subject to prestress losses in the long and short terms, and the structure ages over time. The structure is susceptible to corrosion from exposure to environmental factors such as moisture, chloride, and carbonation, thus causing prestress loss. Therefore, strengthening the structure is needed to address this problem. Read More

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Effect of Various Type of Nanoparticles on Mechanical and Tribological Properties of Wear-Resistant PEEK + PTFE-Based Composites.

Materials (Basel) 2021 Feb 27;14(5). Epub 2021 Feb 27.

Faculty of Engineering, Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway.

The mechanical and tribological properties of polyetheretherketone (PEEK)- and PEEK + PTFE (polytetrafluoroethylene)-based composites loaded with and four types of nanoparticles (carbonaceous, metallic, bimetal oxide, and ceramic) under metal- and ceramic-polymer tribological contact conditions were investigated. It was found that loading with the nanofillers in a small content (0.3 wt. Read More

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February 2021

Basalt Fiber-Based Flame Retardant Epoxy Composites: Preparation, Thermal Properties, and Flame Retardancy.

Materials (Basel) 2021 Feb 14;14(4). Epub 2021 Feb 14.

IMDEA Materials Institute, C/Eric Kandel, 2, 28906 Getafe, Madrid, Spain.

We aimed to study the impact of surface modification of basalt fiber (BF) on the mechanical properties of basalt fiber-based epoxy composites. Four different types of pretreatment approaches to BF were used; then a silane coupling agent (KH550) was applied to further modify the pretreated BF, prior to the preparation of epoxy resin (EP)/BF composites. The combination of acetone (pre-treatment) and KH550 (formal surface treatment) for basalt fiber (BT-AT) imparted the EP/BF composite with the best performance in both tensile and impact strengths. Read More

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February 2021

Preparation and Electrical Properties of Silicone Composite Films Based on Silver Nanoparticle Decorated Multi-Walled Carbon Nanotubes.

Materials (Basel) 2021 Feb 17;14(4). Epub 2021 Feb 17.

Department of Chemical and Biological Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-gu, Daejeon 34158, Korea.

The electrical properties of silicone composite films filled with silver (Ag) nanoparticle-decorated multi-walled carbon nanotubes (MWNT) prepared by solution processing are investigated. Pristine MWNT is oxidized and converted to the acyl chloride-functionalized MWNT using thionyl chloride, which is subsequently reacted with amine-terminated poly(dimethylsiloxane) (APDMS). Thereafter, APDMS-modified MWNT are decorated with Ag nanoparticles and then reacted with a poly(dimethylsiloxane) solution to form Ag-decorated MWNT silicone (Ag-decorated MWNT-APDMS/Silicone) composite. Read More

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February 2021

A Facile and Scalable Approach in the Fabrication of Tailored 3D Graphene Foam via Freeze Drying.

Materials (Basel) 2021 Feb 11;14(4). Epub 2021 Feb 11.

Plasma Forming Laboratory, Mechanical and Materials Engineering, Florida International University; Miami, FL 33174, USA.

One of the challenges in the processing of advanced composite materials with 2D reinforcement is their extensive agglomeration in the matrix. 3D architecture of 2D graphene sheets into a Graphene Foam (GrF) assembly has emerged as an effective way to overcome agglomeration. The highly reticulated network of branches and nodes of GrF offers a seamless pathway for photon and electron conduction in the matrix along with improved mechanical properties. Read More

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February 2021

Effect of Different Coupling Agents on Interfacial Properties of Fibre-Reinforced Aluminum Laminates.

Materials (Basel) 2021 Feb 21;14(4). Epub 2021 Feb 21.

National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, China.

Metal composite interface properties significantly affect the integrity, bonding properties, and interface structure of Fibre Metal Laminates (FMLs). Interfacial bonding strength's effect on Carbon Fibre-Reinforced Aluminium Laminate (CARALL) mechanical behaviours was investigated via three-point bending and low-velocity impact tests. AA6061 sheets were subjected to surface pretreatments under three conditions (anodizing and A-187 and A-1387 surface modifications) to obtain different interfacial bonding strengths. Read More

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February 2021

Special Issue 'Advanced and High Performance Metallic Foams'.

Materials (Basel) 2021 Feb 26;14(5). Epub 2021 Feb 26.

Department of Materials Science and Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rakpart 3., 1111 Budapest, Hungary.

Metallic foams are developing more and more [... Read More

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February 2021

Laser Shock Peening of SiCp/2009Al Composites: Microstructural Evolution, Residual Stress and Fatigue Behavior.

Materials (Basel) 2021 Feb 26;14(5). Epub 2021 Feb 26.

School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China.

SiC particle reinforced aluminum alloy has a wide application in the aerospace industries. In this study, laser shock peening (LSP), an advanced surface modification technique, was employed for SiCp/2009Al composite to reveal its microstructure, microhardness and residual stress evolution. After peening, high densities of dislocations were induced in the aluminum substrate, and stacking faults were introduced into the SiC particle. Read More

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February 2021

Fabrication and Mechanical Properties of CrAlC MAX Phase Coatings on TiBw/Ti6Al4V Composite Prepared by HiPIMS.

Materials (Basel) 2021 Feb 9;14(4). Epub 2021 Feb 9.

School of Materials Science & Engineering, Harbin Institute of Technology, Harbin 150001, China.

The high-power impulse magnetron sputtering (HiPIMS) technique is widely used owing to the high degree of ionization and the ability to synthesize high-quality coatings with a dense structure and smooth morphology. However, limited efforts have been made in the deposition of MAX phase coatings through HiPIMS compared with direct current magnetron sputtering (DCMS), and tailoring of the coatings' properties by process parameters such as pulse width and frequency is lacking. In this study, the CrAlC MAX phase coatings are deposited through HiPIMS on network structured TiBw/Ti6Al4V composite. Read More

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February 2021

Optical, Structural, and Dielectric Properties of Composites Based on Thermoplastic Polymers of the Polyolefin and Polyurethane Type and BaTiO Nanoparticles.

Materials (Basel) 2021 Feb 5;14(4). Epub 2021 Feb 5.

National Institute of Materials Physics, Magnetism and Superconductivity Laboratory, Atomistilor street 405A, P.O. Box MG-7, R077125 Bucharest, Romania.

In this work, new films containing composite materials based on blends of thermoplastic polymers of the polyurethane (TPU) and polyolefin (TPO) type, in the absence and presence of BaTiO nanoparticles (NPs) with the size smaller 100 nm, were prepared. The vibrational properties of the free films depending on the weight ratio of the two thermoplastic polymers were studied. Our results demonstrate that these films are optically active, with strong, broad, and adjustable photoluminescence by varying the amount of TPU. Read More

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February 2021

Phase Change Materials Composite Based on Hybrid Aerogel with Anisotropic Microstructure.

Materials (Basel) 2021 Feb 7;14(4). Epub 2021 Feb 7.

Key laboratory of Advanced Civil Engineering Materials, Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai 200092, China.

Phase change materials (PCMs) can be thermally enhanced by reduced graphene oxide (rGO)/expanded graphite (EG) aerogel with anisotropic microstructure. An rGO/EG aerogel with anisotropic microstructure was prepared by directionally freezing aqueous suspensions of graphene oxide (GO) and EG, followed by a freeze-drying process and thermal reduction at 250 °C. The anisotropic microstructure of rGO/EG aerogel composite PCM was confirmed by scanning electron microscopy (SEM), thermal conductivity tests and infrared images. Read More

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February 2021

Advanced Composite Biomaterials.

Materials (Basel) 2021 Feb 1;14(3). Epub 2021 Feb 1.

Faculty of Materials Science, University Politehnica of Bucharest, Splaiul Independentei 313, 060042 Bucharest, Romania.

"Biomaterials" is one of the most important fields of study in terms of its development in the 21st century [... Read More

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February 2021