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    Nonocomposites (Dr. S. T. Mhaske) - 2

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    DIPAK VINAYAK SHIRBHATE
    The document discusses polymer nanocomposites and their advantages over traditional materials. Polymer nanocomposites can increase strength and stiffness while maintaining flexibility through the addition of nanoparticles. This allows for lighter weight materials with applications in fields like automotive, packaging, and construction. Specific nanofillers like carbon nanotubes, clays, and POSS nanoparticles are discussed. The document outlines how surface modification and different production methods like in-situ polymerization can be used to disperse the nanoparticles and tailor the interface between polymer and filler.

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    Nonocomposites (Dr. S. T. Mhaske) - 2

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    DIPAK VINAYAK SHIRBHATE
    127 views18 pages
    The document discusses polymer nanocomposites and their advantages over traditional materials. Polymer nanocomposites can increase strength and stiffness while maintaining flexibility through the addition of nanoparticles. This allows for lighter weight materials with applications in fields like automotive, packaging, and construction. Specific nanofillers like carbon nanotubes, clays, and POSS nanoparticles are discussed. The document outlines how surface modification and different production methods like in-situ polymerization can be used to disperse the nanoparticles and tailor the interface between polymer and filler.

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    Nonocomposites (Dr. S. T. Mhaske)-2

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    The document discusses polymer nanocomposites and their advantages over traditional materials. Polymer nanocomposites can increase strength and stiffness while maintaining flexibility through the addition of nanoparticles. This allows for lighter weight materials with applications in fields like automotive, packaging, and construction. Specific nanofillers like carbon nanotubes, clays, and POSS nanoparticles are discussed. The document outlines how surface modification and different production methods like in-situ polymerization can be used to disperse the nanoparticles and tailor the interface between polymer and filler.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    127 views18 pages

    Nonocomposites (Dr. S. T. Mhaske) - 2

    Uploaded by

    DIPAK VINAYAK SHIRBHATE
    The document discusses polymer nanocomposites and their advantages over traditional materials. Polymer nanocomposites can increase strength and stiffness while maintaining flexibility through the addition of nanoparticles. This allows for lighter weight materials with applications in fields like automotive, packaging, and construction. Specific nanofillers like carbon nanotubes, clays, and POSS nanoparticles are discussed. The document outlines how surface modification and different production methods like in-situ polymerization can be used to disperse the nanoparticles and tailor the interface between polymer and filler.

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    NANOCOMPOSITES

    Presented by, Dr. S. T. Mhaske

    WHY POLYMER NANOCOMPOSITES? WHY NANO?

    Increased strength and stiffness of polymers while maintaining elongation Permeation resistance for packaging (nano barriers for different molecules) Nano addition maintain transparency (desired for packaging) Recyclability: nanofillers are not affected or degraded during processing, recycling does not affect physical properties

    Flame resistance (Nano fire extinguisher)

    POLYMER NANOCOMPOSITES (PNC)


    Applications
    Heat-resistant materials Light weight and high strength structural materials Electrical package, conductive polymers. Barrier Properties Corrosion resistant, coating or structure Electro-magnetic field shielding Selective photo sensitivity, coatings, etc

    It is estimated that widespread use of PNCs by car manufacturers could save over 1.5 billion liters of gasoline annually and reduce CO2 emissions by nearly 10 billion pounds!

    POLYMER NANOCOMPOSIES POPULAR NANO-REINFORCEMENTS


    Carbon Nanotube, Bukcyball

    Clay

    POSS

    Graphite

    Building Blocks of the Nano Age

    Cellulose Other Synthetic Materials

    MICROCOMPOSITES VS NANOCOMPOSITES

    Fig 2: Principles applied to the fabrication of micro- and nano-composites

    NANOCOMPOSITES VS. TRADITIONAL MATERIALS IN AUTOMOTIVE APPLICATIONS


    Reinforcing fillers such as talc, mica, and calcium carbonate Glass-fiber reinforcement

    higher stiffness, increasing weight and melt viscosity, decreasing toughness, optical clarity, and surface quality

    high stiffness with a corresponding increased difficulty of fabrication and cost

    Nanofillers such as exfoliated clays Effective at a loading under 5% by weight, introducing only a minor increase in materials cost Significant improvement in modulus, thermal stability, fire retardency, dimensional stability, surface hardness, heatdistortion temperature, mar resistance, and barrier properties

    Nanocomposites: Low-Cost, High-Strength Materials for Automotive Parts

    Schematic for nanoparticles-reinforced polymeric material Nanocomposites, a new class of materials under study internationally, consist of traditional polymers reinforced by nanometer-scale particles dispersed throughout. Corrosion resistance, noise dampening, parts consolidation, and recyclability all would be improved. An economical solution for increased fuel economy in motor vehicles

    POLYMER NANOCOMPOSIES SURFACE MODIFICATION, DISPERSION


    Ion exchange for clays

    Addition reaction on CNTs (fullerenes)


    Acidification, fluorination, etc. in order to attach different functional groups onto nano reinforcement surface to improve dispersion as well as reactivity with the matrix structure morphology change & tailoring of interface

    POLYMER NANOCOMPOSIES NETWORK FORMATION

    States of dispersion of organoclays in polymers with WAXS and TEM results.

    Nanocomposites formation

    In situ intercalative polymerization

    ExfoliationAdsorption

    Melt Intercalation

    In situ intercalative polymerization

    Nylon-6 nanocomposite formed through in situ polymerization with ADAMMT

    Exfoliation-Adsorption

    Schematic of formation of nanocomposites of polystyrene-nano graphite process.

    Melt Intercalation

    Enhanced Modulus and Dimensional Stability

    Toughness and Rheological Properties

    Key Nanocomposite Properties For Automotive Applications

    Higher HeatDistortion Temperature

    Improved Scratch Resistance

    NANOMATERIALS - UV PROTECTION
    Small = Transparent

    Advanced Powder Technology Pty Ltd


    25 nm

    Zinc Oxide
    90 nm

    Zinclear in Wet Dreams sunscreen

    250 nm

    NANOCOMPOSITE MATERIALS

    Engineering Applications: Nanocomposite materials have been used in aerospace, automobile, and marine applications (see Figs. 1-3). Recently, nanocomposite materials have been increasingly considered in civil engineering structures. The latter applications include seismic retrofit of bridge columns (Fig. 4), replacements of deteriorated bridge decks (Fig. 5), and new bridge structures (Fig. 6).

    Figure 1

    Figure 2

    Figure 3

    Figure 4

    Figure 5

    Figure 6

    NANODEVICES - MAGNETIC STORAGE


    The hard drive in your computer uses a nanotechnology innovation called giant Magneto resistance.
    Giant magneto resistance is an effect where small magnetic fields can be detected as a change in resistance.
    16.8 GB

    NANO-PRODUCTS

    Display Screens
    Motorola (NTs)

    Cars - Hummer

    GM (Nanocomposites)

    Nano SilverSeal Refrigerator

    Samsung (nanoparticle-coated)

    Tennis Rackets
    Wilson (C fibers)

    Nano-Products on the Market Now

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