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  • Materials | Free Full-Text | Polymer-Based

    Through the use of multifunctional polymers, it has become possible to design carriers and materials tailored to the specific conditions and site of application, to deliver the active substance directly to the affected tissue, including intra-periodontal pocket delivery, and to release the active substance in a timed manner, allowing for the improvement of …

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  • structure–property relationships in hybrid dental ...

    MA-POSS and MI-POSS, were used as reinforcing materials. They were first dispersed in TEGDMA, followed by mechanical stirring for 2 hours at 400 rpm…

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  • Wind blades made from polyurethane resin |

    Key benefits of polyurethane resin for use in wind turbine blades. Long blades Covestro polyurethane resin enables the production of long blades. This case demonstrates the ability to produce 64.2m blades only with polyurethane …

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  • Tuning of Smart Multifunctional Polymer

    2019-12-1 · 2019-12-1 · Materials : Acetonitrile (≥99.8%, Sigma Aldrich), 2‐butanone (≥99.5%, Sigma Aldrich), 4‐hydroxybenzophenone (98%, Sigma Aldrich), triethylamine (≥99.5%, Sigma Aldrich), methacryloyl chloride (97%, ABCR), sodium hydroxide (98%, Acros Organics), sodium sulfate (≥99%, Sigma Aldrich), ethanol (100%, VWR …

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  • Tuning of Smart Multifunctional Polymer

    2019-12-1 · 2019-12-1 · Herein a promising multifunctional and universally usable coating with simultaneous antifouling, easy‐to‐clean, and anti‐fog functionality is presented based on smart polymer films consisting of copolymers with 2‐methacryloyloxyethyl phosphorylcholine (MPC), realizing the function of the film and photoreactive …

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  • Polymer Challenges in the Wind Turbine Industry

    3D and 4D Printing of Polymer Nanocomposite Materials: Processing, Applications, and Challenges covers advanced 3D and 4D printing processes and the latest developments in novel polymer-based printing materials, thus enabling the reader to understand and benefit from the advantages of this groundbreaking technology. The book presents processes, materials selection, and printability issues, along with sections on the preparation of polymer composite materials …

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  • 3D and 4D Printing of Polymer Nanocomposite

    2012-12-12 · 2012-12-12 · INTRODUCTION: HISTORIC INTRODUCTION Polymers: synthetic and natural materials: Cellulose, starch, proteins, leather , wool , cotton , synthetic fibres of polyesters and polyamides, plastics, rubbers, adhesives etc Production 1995: 110 millions of tons (Spain: 2,6) 2000: 180 millions of tons (Spain : 2,7)

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  • A Comparative Study of Polymer Gears Made of

    2018-12-30 · 2018-12-30 · For the GEnx-1B, the turbine section has seven low-pressure stages and two high-pressure stages. The latter two low-pressure stages (sixth and seventh) are made of TiAl alloys in order to reduce weight, and the rest of low-pressure stages and high-pressure stages are made of Ni-based superalloys such as Rene’ N5 …

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  • Polymers | Free Full-Text | Multifunctional

    2008-1-1 · 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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  • Characterizing the performance of dental air

    2021-1-2 · Materials and methods e instrumental details and the reagents used were pre-sent as supplementary material (S). e detailed ZnO and PTMO-NCM synthesis procedures were also pre-sent in the author’s earlier works [26–28]. Roughly, 1, the PVA polymer was dissolved in distilled water with continuous stirring on a magnetic stirrer at~115 °C for

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  • Multifunctional application of PVA-aided Zn–Fe–Mn

    2021-4-16 · Negligible quantities of each competing ion were captured by the membrane (figs. S37 to S43). These selective, multifunctional performances were also maintained upon integrating the PAF-1-SH membranes into a practical stack electrodialysis device (figs. S54 to S57 and section 1.9 of the supplementary materials).

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  • Additive Manufacturing for Turbomachinery &

    2012-12-12 · Dpt. Materials Sci. and Eng. and Chem. Eng. UC3M Topic 7. Polymeric materials (I) 1. INTRODUCTION: DEFINITION POLYMER “Organic compound, natural or synthetic, with high molecular weight made of repetitive structural units ” Large size chains formed from the covalent union of various monomer units (macromolecule) …

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  • American Dental Accessories || Practice Tips #22

    2010-5-25 · The cage keeps the turbine spinning smoothly as it maintains an evenly distributed load (more on load later). Bearing cages can be made of a variety of materials, generally, they are a polymer (i.e. plastic) and are usually the most fragile component of the entire turbine.

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  • Novel multifunctional dental bonding agent for

    The innovative ACE Smart Pro Dental Unit combines the best attributes of self-contained mobility and a high-tech design that is perfectly suited for professional in-office use. The unit offers flexibility and comfort for both simple and complex treatments. Experience the technical refinement with a wide range of instruments of your choice.

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  • Additive Manufacturing for Turbomachinery &

    Galinstan in PDMS dispersions were mixed using a Caframo overhead mixer (Georgian Bluffs, Ontario, Canada) with a turbine stirrer for 2 h at 2000 rpm. PDMS in galinstan dispersions were formed using the same overhead mixer, stirring for 15 min. Galinstan-in-PDMS dispersions were formed at 30, 50, 70, and 80 vol% galinstan as possible for …

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  • ACE Smart Pro - Portable Dental cart | Portable

    2016-10-14 · graphene1 and graphene–polymer composites open new horizons in the achieve-ment of multifunctional materials with advanced performance2–5 compared with * Corresponding author. E-mail: [email protected] doi: 10.2298/JSC151218040J _____

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  • Deformable liquid metal polymer composites

    2020-8-17 · Right from the early days, polymer materials have been discovered as being beneficial for various applications but a poor understanding of these materials greatly handicapped their usage. However, with a change in this trend, polymer materials have gradually displaced other materials in most applications. In recent times, due to improved research and knowledge, polymer-based materials …

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  • Polymer–graphene composites by the photocuring of

    2020-12-24 · Natural polymer nanofibers, due to eminent features like biodegradability and biocompatibility, are noteworthy materials in biological environments . Ideally, they can create scaffolds similar to natural ECMs in design and structure that allow cells to perform vital tasks including signal transmission, proliferation, differentiation etc. [ 111 ...

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  • Polymer-Based Composites: An Indispensable

    2019-4-17 · This chapter describes a summary of the main tribological achievements carried out in TEKNIKER during the last 37 years. It covers the description of commercial and newly developed tribological test benches and case studies for a wide variety of applications. The examples refer to different tribological characterization tools for …

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  • Electrospun Nanofibers of Natural and Synthetic

    2017-3-7 · The aim of this work is to investigate the fracture characteristics of the epoxy-based stepped functionally graded materials (FGM) reinforced with carbon nanotubes (CNTs). The effects regarding fracture toughness in mode I were also studied. The specimens were fabricated with three different mass percentages of 0.1, 0.2 and 0.3%. …

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  • Tuning of Smart Multifunctional Polymer

    2019-12-1 · 2019-12-1 · 1 Introduction. Products with a higher value and consumer acceptance can be created by implementation of multifunctional coatings. 1-3 This type of surface modification combines different functionalities, e.g., anti‐ice, 4-6 easy‐to‐clean, 7-9 anti‐fog, 10-12 and antifouling 13-15 in the same layer. The surface modification by grafting and crosslinking of polymer …

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  • Tuning of Smart Multifunctional Polymer

    2019-12-1 · 2019-12-1 · Herein a promising multifunctional and universally usable coating with simultaneous antifouling, easy‐to‐clean, and anti‐fog functionality is presented based on smart polymer films consisting of copolymers with 2‐methacryloyloxyethyl phosphorylcholine (MPC), realizing the function of the film and photoreactive …

    Get Price
  • Materials | Free Full-Text | Polymer-Based

    Polymers in drug formulation technology and the engineering of biomaterials for the treatment of oral diseases constitute a group of excipients that often possess additional properties in addition to their primary function, i.e., biological activity, sensitivity to stimuli, mucoadhesive properties, improved penetration of the active pharmaceutical ingredient …

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  • structure–property relationships in hybrid dental ...

    based dental materials. Keywords: POSS, ... between monofunctional and multifunctional POSS in dental ... stirring for 2 hours at 400 rpm. Bis-GMA, CQ, and EDMAB

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  • A Comparative Study of Polymer Gears Made of

    2020-8-6 · comprehensive evaluation of emerging materials and manufacturing technologies that will enable non-metallic gas turbine engines. • Assess the feasibility of using additive manufacturing technologies to fabricate gas turbine engine components from polymer and ceramic matrix composites. - Fabricate and test prototype …

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  • Additive Manufacturing 2 - NASA

    Control of morphology in polymer thermoelectric materials is critical to their performance. In this work we study highly aligned polymer thermoelectric materials prepared by mechanical rubbing. We observe a remarkable range of thermal conductivity states from <0.2 W m−1 K−1 to >1 W m−1 K−1 when comparing mea

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  • Polymer Challenges in the Wind Turbine Industry

    2018-12-30 · 2018-12-30 · engines. In addition, compositions of materials used in each engine section are summed up in the Appendix. 2. Fan Section The Fan section is responsible for taking air into the engine. Even though the heat restriction is not strict, the fan should be made of light and high-specific-strength materials due to strong …

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  • High thermal conductivity states and enhanced

    2012-12-12 · 2012-12-12 · Dpt. Materials Sci. and Eng. and Chem. Eng. UC3M Topic 7. Polymeric materials (I) 1. INTRODUCTION: DEFINITION POLYMER “Organic compound, natural or synthetic, with high molecular weight made of repetitive structural units ” Large size chains formed from the covalent union of various monomer units (macromolecule) …

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  • MASTERsurg™ LUX The all in one surgical unit |

    2021-7-28 · 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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  • ANCAR Dental | Series 3

    • Multifunctional and proportional electronic pedal with water selection, micromotor reverse turn, “Chip blower function” and unit movements. • Auxiliary tray (285 x 190 mm) for small hand-instruments. • Possibility of turbine and micromotor (M40) interchange in …

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  • Structure–property relationships in hybrid dental ...

    Structure–property relationships in hybrid dental nanocomposite resins containing monofunctional and multifunctional polyhedral oligomeric silsesquioxanes Weiguo Wang,1,* Xiang Sun,1,* Li Huang,2,* Yu Gao,1 Jinghao Ban,1 Lijuan Shen,1 Jihua Chen1 1Department of Prosthodontics, 2Department of General Dentistry and Emergency, …

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  • Multifunctional Nanohydroxyapatite-Promoted

    2019-8-8 · The polymer complex formation was carried out by mixing together CH2Cl2 solns. of polylactides prepd. sep. so as to have a polymer concn. of 1.0 g.dL-1. Differential scanning calorimetry (DSC) for the homopolymers showed a single endothermic peak at ∼180°, whereas a new peak appeared around 230° in the DSC curves of the blended …

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  • Upconversion 3D Printed Composite with

    Tissue engineering is an interdisciplinary field aimed at bioactive porous materials for repairing tissues affected by injury. 26 3D-printed scaffolds have been widely used as a support for cell growth and proliferation. 48 Such materials offer more familiar conditions mimetizing the characteristics of the target tissue environment, thus ...

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  • Products Implants - FGM Drills - FGM - FGM

    Active Tip: Acts like an initial drill, providing stability from start to finish. Stability and safety: Cylindrical body that 'does not pull', allowing the placement of drill stops. Efficiency: It allows perforation in one-step. Recommended perforation rotation from: 600 - 1200 rpm. Straight flutes: Irrigation through the whole extension of the drill and …

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  • T1, T2 and T3 instrument series As individual as your

    2021-7-18 · Ergonomic design made of high quality material Regardless if made fully out of titanium as the T1 Premium class, or robust stainless steel with exceptionally good grip, as in the T2 and T3 classes, the materials of the new turbine generation support your work in the best way possible. Dynamic Speed Control (DSC)

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  • GUIDELINES TO CHOOSING A DENTAL

    2017-5-27 · A dental treatment unit is a key element of any dental office. This is a stationary equipment complex intended for patients’ oral cavities treatment. To work at the up-to-date level, the default configuration should consist of: a patient chair, a CS/TS dentist’s module (either with swinging or hanging hoses), an assistant module, a ...

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  • Professor Robert J K Wood | Engineering |

    2021-3-26 · Shah, S. R. & Raj, R. Mechanical properties of a fully dense polymer derived ceramic made by a novel pressure casting process. Acta Mater. 50 (16), 4093–4103 (2002). ADS CAS Article Google Scholar

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