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  • A review on tribology of polymer composite coatings

    2021-2-10 · the common polymer materials used as lubrication coating matrices include epoxy resin (EP), phenolic resin (PF), aromatic thermosetting copolyester (ATSP), polyp-hydroxybenzoic acid (PHBA), polyimide (PI), polyamide-imide (PAI), polyurethane (PU), polyamide (PA), polyethere-therketone (PEEK), polytetrafluorethylene (PTFE), ultra-high molecular

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  • Advanced functional polymer materials - Materials ...

    The research on advanced functional polymers is being driven by the fast-growing demand for new functional materials that can be used in revolutionary technologies. Polymers can be endowed with functions by using certain special preparation methods or by introducing functional groups or fillers into material 2020 Materials Chemistry Frontiers Review-type Articles

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  • Additively Manufactured Parts Made of a Polymer

    In order to determine the flow characteristics of the turbocharger compressor with a polymer disc, a test stand was used to supply the turbine with compressed air heated to a temperature of 50–150 ∘ C. The turbocharger used in this research was an industrial automotive turbocharger from Renault Clio II 1.5 dCi 82HP (Renault, Boulogne-Billancourt, France).

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  • Modeling thermal-visco-elastohydrodynamic

    2021-2-1 · The boundaries in Fig. 14(c) and (d) provide critical values of ψ and the corresponding film thicknesses for engineering design involving lubricated polymer-based materials. 4. Conclusions. This paper presents a novel model for the thermal-visco-elastohydrodynamic lubrication demonstrated by an elastic sphere-viscoelastic surface interface.

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  • Polymer composites for tribological applications ...

    2018-10-1 · Polymer composite cages in dental turbine handpieces : Textile wound tube (upper left), with enlargement of its cross-section, showing axial and tangential cotton fiber bundles, embedded in a phenolic resin matrix; machined miniature snap cages (upper right); Mounting of the cages in the steel ball bearing (lower right); operation of ball bearing in the dental turbine handpiece (lower left).

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  • Biopolymer‐Based Coatings: Promising Strategies to

    Replacements of small joints, i.e., finger joints, are often completely made from polymeric materials, typically from polypropylene (PP), and PP is further used as material for nondegradable sutures. Owing to its excellent transparency, polymethylmethacrylate (PMMA) is used for intraocular lenses; however, it can also be found in tooth fillings and replacements.

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  • Dental Biomaterials | ScienceDirect

    Publisher Summary. The dental air-turbine handpiece rapidly gained widespread acceptance by the dental profession after its introduction in the late 1950s and it continues to be used as the main means of carrying out cutting work in clinical dental practice, whether of tooth tissue or restorative materials.

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  • Dental polymers - SlideShare

    2021-1-15 · In this study, erosion wear tests in composites materials (carbon fiber and fiberglass) were performed in order to understand their behavior for blades of wind turbine applications. The erosion tests were also made in coated composites materials with a polyester resin (gel coat), to compare the wear erosion resistance with uncoated materials.

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  • Solid particle erosive wear study of polymer

    specific materials and architectures in restricted frequency ranges. A general framework is developed and employed to characterize the dynamics of polymer phononic materials with different architectures made of both thermoset and thermoplastic polymers, presenting qualitatively different viscoelastic behaviors.

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  • Intelligent lubricating materials: A review - ScienceDirect

    2020-12-1 · 2. Tribological behavior of solid lubricating materials. Friction consumes more than 30% of the primary energy all over the world [], and the wear between moving parts is one of the main failure reasons of materials and mechanical equipment [].The economic loss caused by friction and wear is up to hundreds of billions every year, and lubrication is the most effective way to diminish friction ...

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  • Highly Stretchable and Conductive Polymer Material

    2007-8-31 · A highly elastic and stretchable conductive polymer material resulted from blending the conductive polymer poly(3,4-ethylenedioxythiophene):p-tosylate and an aliphatic polyurethane elastomer.The blend inherited advantageous properties from its constituents, namely high conductivity of 120 S cm –1 from its conductive polymer component, and elastomeric mechanical properties …

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  • Soredex and Instrumentarium | KaVo Dental

    2 天前 · Made for your hand: Each KaVo dental turbine is the result of extensive ergonomic and anatomical studies with consistent dimensions, angles and contours for balanced handling. You can choose from the wide range of KaVo's top class dental turbines. KaVo dental turbines - The perfect interplay of hand and tool.

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  • Determination of Polyetheretherketone (PEEK)

    2019-7-1 · Materials and Methods. Since the mold temperature could affect the properties of the injected parts, the temperature of 20 gypsum specimens was monitored using the multi-thermocouple system (n = 5). A total of 210 specimens were prepared for mechanical tests according to the ISO standard for denture base polymer (n = 10).

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  • Dissipative Dynamics of Polymer Phononic Materials

    specific materials and architectures in restricted frequency ranges. A general framework is developed and employed to characterize the dynamics of polymer phononic materials with different architectures made of both thermoset and thermoplastic polymers, presenting qualitatively different viscoelastic behaviors.

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  • Emerging applications of stimuli-responsive polymer

    2010-1-22 · Responsive polymer materials can adapt to surrounding environments, regulate transport of ions and molecules, change wettability and adhesion of different species on external stimuli, or convert ...

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  • Journal of Polymer Science & Applications - High

    2019-8-5 · Corresponding Author. [email protected]; Center for Excellence in Superconducting Electronics (CENSE), State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology (SIMIT), Chinese …

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  • Mechanical Engineering Questions and Answers -

    Looking for MSDS information regarding the chemicals in a commercial product or a material safety data sheet (MSDS)? Here is THE most complete MSDS list on the Internet, and it's free! By federal law, manufacturers must supply this info in an MSDS which we provide here, FREE!

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  • Advanced functional polymer materials - Materials ...

    The research on advanced functional polymers is being driven by the fast-growing demand for new functional materials that can be used in revolutionary technologies. Polymers can be endowed with functions by using certain special preparation methods or by introducing functional groups or fillers into material 2020 Materials Chemistry Frontiers Review-type Articles

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  • Polymer Material - an overview | ScienceDirect Topics

    Daniel E. Heath, Stuart L. Cooper, in Biomaterials Science (Third Edition), 2013 Introduction. Polymer materials possess an array of unique properties which make them useful in a wide variety of biomaterial applications such as orthopedics, dental, hard and soft tissue replacements, and cardiovascular devices. In fact, polymers represent the largest class of materials used in medicine.

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  • Soredex and Instrumentarium | KaVo Dental

    2 天前 · Made for your hand: Each KaVo dental turbine is the result of extensive ergonomic and anatomical studies with consistent dimensions, angles and contours for balanced handling. You can choose from the wide range of KaVo's top class dental turbines. KaVo dental turbines - The perfect interplay of hand and tool.

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  • Additive Manufacturing of Polymer Materials:

    2021-2-28 · The process can be made suitable for most industrial sectors, using a wide range of materials; viz. metallic, ceramic, polymer materials along with combinations in the form of composites, hybrid and graded functional materials and hydrogels, in different physical states including solid, liquid, viscoelastic, and gels.

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  • Polymer Challenges in the Wind Turbine Industry -

    2021-6-23 · The user friendly QUATTROcare™ Plus automatic handpiece maintenance system is designed to clean, lubricate and purge your instruments with the simple push of a button. The automatic dispenser delivers the precise amount of cleaner and lubricant required to maintain your handpieces prior to sterilization. Proper handpiece care and maintenance leads to longer handpiece life, reduced repair ...

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  • Functional PEG-based polymers with reactive groups

    The development of natural biomaterials is not regarded as a new area of science, but has existed for centuries. The use of natural products as a biomaterial is currently undergoing a renaissance in the biomedical field. The major limitations of natural biomaterials are due to the immunogenic response that can occur following implantation and the lot-to-lot variability in molecular structure ...

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  • Dental Handpiece Maintenance System | KaVo

    SEEPEX is a leading worldwide specialist in pump technology. Our progressive cavity pumps, macerators and control systems are used wherever low to highly viscous, aggressive or abrasive media must be conveyed at low pulsation rates.

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  • Natural Products: A Minefield of Biomaterials

    2019-5-24 · ball materials. The resulting loss in hardness reduces the bearing capacity causing early failure. In extreme cases, balls and rings will deform. 'Ihe temperature rise can also degrade or destroy lubricant Common culprits are heavy electrical heat loads, inadequate heat ~aths. and insufficient coolinx or lubrication when loads and

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  • A Comparative Study of Polymer Gears Made of Five

    2019-12-6 · A Comparative Study of Polymer Gears Made of Five Materials K. Mao, P. Langlois, N. Madhav, D. Greenwood and M. Millson Introduction Polymer materials have been used for many gear applications due to several advantages over metal gears, including their light weight, good damping resistance and low cost. Polymer gears

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  • Customized Polymerization, Polymer Manufacturing

    Polymer synthesis, also called polymerization, is the process by which monomers (small molecules) are covalently bonded to form a (usually long) polymer chain or network. Based on the initial system of the chemical reaction, polymerization method can be divided into four categories: bulk, suspension, emulsion and condensation polymerization.

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  • Overview of Biomaterials and Their Use in Medical Devices

    2013-11-24 · Chapter 1: Overview of Biomaterials and Their Use in Medical Devices 3 Fig. 2 Schematic showing key components of a natural syn- ovial joint. It consists of layers of bearing material (articular cartilage) mounted on relatively hard bones forming

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  • Our products - Composite materials solutions | Solvay

    Grant Title: Bio-Inspired Approaches to Functional Nanostructured Materials. Steven Armes, Professor of Polymer and Colloid Chemistry, University of Sheffield and Fiona Meldrum, Professor of Inorganic Chemistry, University of Leeds This interdisciplinary research proposal has the potential for substantial impact across multiple EPSRC Priority Areas. In particular, Control of Self-Assembly is ...

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  • Polymer Challenges in the Wind Turbine Industry -

    2020-11-28 · Methods for improving the functional and operational properties of polymeric textile materials are described, on the basis of which recommendations are given for the design of new materials with specified functional properties.

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  • Examples of National Importance Statements - EPSRC

    2010-1-22 · Responsive polymer materials can adapt to surrounding environments, regulate transport of ions and molecules, change wettability and adhesion of different species on external stimuli, or convert ...

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  • Development of Methods for Improving the

    2019-9-20 · Creating polymer-in-salt solid electrolytes (PISSEs) where the lithium salt contents exceed 50 wt.% is a viable technology to enhance ionic conductivity at room temperature of SPEs, which is also suitable for scalable production. In this review, we first clarify the structure and ionic conductivity mechanism of PISSEs by analyzing the ...

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  • Dentistry — Polymer-based restorative materials

    For the purposes of this International Standard, dental polymer-based restorative materials are classified as the following types. a) Type 1: polymer-based restorative materials claimed by the manufacturer as suitable for restorations involving occlusal surfaces; b) Type 2: all other polymer-based restorative materials, and luting materials.

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  • What Are Mouthguards Made Of? Thermopolymer vs

    2019-10-7 · 2.0 Working principle of axial turbine shaft seal of elastic polymer Although operating principles of a hydro-turbine axial seal may appear similar to those of smaller traditional mechanical face seals such as fitted to pumps etc, the size disparity between the two applications causes practical operation of the seals to differ considerably.

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  • Hydro-Turbine Main Shaft Axial Seals of Elastic Polymer ...

    2013-6-4 · materials is calculated and the results are given in the last column of Table 9.2. • The results show that steels AISI 1020 and 4140 are equally suitable, while Al 6061 and epoxy - glass are more expensive. Materials and Process Selection for Engineering Design: Mahmoud Farag 15

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  • Chapter 9 THE MATERIALS SELECTION PROCESS

    KEY CONCEPTS • Wind turbine main bearings pose distinctive lubrication challenges related to size, operating conditions, location and environment. • Grease formulations and performance tests must consider multiple competing priorities to achieve an optimum balance. • Larger turbines and longer maintenance intervals are pushing the cost balance toward new technologies.

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  • Feature - Tribology and Lubrication Engineering

    2016-5-19 · functional applications Kesong Hu, Dhaval D. Kulkarni, Ikjun Choi, Vladimir V. Tsukruk∗ School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA a r t i c l e i n f o Article history: Available online 29 March 2014 Keywords: Graphene materials Polymer interfaces Flexible nanocomposites ...

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  • Our products - Composite materials solutions | Solvay

    2019-1-4 · All of the plastics OVDesigns is developing, are fully bio-based. In other words, all of the plastics are made out of natural materials instead of oil. Two of the plastics developed by OVDesigns are also 100% biodegradable. In other words, they degrade fully to the original raw materials.

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  • Progress in Polymer Science - polysurf.mse.gatech.edu

    2017-12-6 · Functional Polymer Opals and Porous Materials by Shear‐Induced Assembly of Tailor‐Made Macromolecular Rapid Communications ( IF 4.886) Pub Date : 2017-12-06, DOI: 10.1002/marc Markus Gallei Photonic band‐gap materials attract enormous attention as potential candidates for a steadily increasing variety of applications.

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