CHO-SHIELD 2056 ELECTRICALLY CONDUCTIVE SILVER-PLATED COPPER ACRYLIC EMI COATING | 日本
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CHO-SHIELD 2056 ELECTRICALLY CONDUCTIVE SILVER-PLATED COPPER ACRYLIC EMI COATING

CHO-SHIELD® 2056 is an electrically conductive, one-component silver and silver/copper-filled acrylic coating that is specially formulated for application on plastics to provide high levels of EMI shielding.

質量(g):
4050
52-03-2056-0000
 部品
Description
    Customer Value Proposition:

    CHO-SHIELD® 2056 is an electrically conductive,
    one-component silver and silver/
    copper-filled acrylic coating that is specially
    formulated for application on plastics to
    provide high levels of EMI shielding.
    CHO-SHIELD 2056 is ideal for use on medical
    electronic enclosures and assemblies
    which require high level, reliable EMI shielding
    performance and may benefit from silvers’
    antimicrobial properties. The excellent
    electrical conductivity of the coating allows
    for thinner applied coatings, saving time and
    money in processing. Thinner coatings limit
    material wastage due to overspray and reduce
    the frequency of mask washing steps.

    Meets UL Specification 746-C for adhesion.

    CHO-SHIELD 2056 conductive coating is
    ideal for a variety of applications, including:

    • High levels of EMI shielding (see
    shielding effectiveness curve Fig. 1)
    • Anti-static protection
    • Surface grounding
    • Coating of ABS, PC/ABS, and many other
    types of plastic enclosures


    Features and Benefits:
    • One component
    • Easy to use. CHO-SHIELD 2056 is ready to
    use with simple mixing. Can be applied with
    standard spray paint equipment, no expensive
    capital equipment required.
    • Thermoplastic acrylic
    • Material dries at room temperature-no high
    temperature cure ovens required, fast
    throughput. Good adhesion to a variety of plastics.
    • Silver/copper and silver flake filler
    • Excellent conductivity and EMI shielding. Cost-
    effective solution for electronic enclosures and
    assemblies which require high level EMI shielding and conductivity.
    • Excellent-leveling, Wets and covers surfaces smoothly
    • Provides great coverage at thin dry film
    thickness which minimizes material costs
    and reduces paint cycle time.


    Application
    Recommended Preparation

    1. Clean the substrate:
    The substrate surface should be clean,
    dry and free of oils, release agents, dirt
    and lint.
    2. Mix the material:
    Mix the material well on a paint shaker
    (typically 1-minute for one-gallon can).
    Or, mix by hand with a large spatula
    until all solids are in a homogeneous
    suspension. Check that no unmixed
    material remains on the bottom and
    the sides of the container.
    3. Optional: Strain the material
    to reduce or eliminate the potential
    for clogging the spray nozzle. The
    paint can be strained through a course
    mesh (1000 micron) flat strainer into a
    pressure pot for spray. All metal fillers
    should be transferred, although a small
    amount of filler clusters might be collected
    in the strainer.


    Optional thinning:

    Standard thinning can be accomplished
    with MEK (methyl ethyl ketone) solvent.
    During humid days (relative humidity
    >50% and temperature >30°C/85°F),
    use n-Butyl alcohol and add up to
    8 fluid ounces per gallon of paint to
    eliminate blushing (a white tint on the
    drying surface).


    Fluid Delivery System

    Use a pressure pot (15 psi, 103 kPa,
    typical) with large diameter, paddletype
    agitator at low mixing speed to
    keep the metal fillers in uniform suspension.

    Conventional spray equipment such as
    HVLP (High Volume, Low Pressure) or
    DeVilbiss EGA 503 with propeller agitator
    pressure pots may be used for spray
    application with approximately 20-50
    psi (138-345 kPa) atomizing air. Use
    lowest pressure possible.
    Re-circulation of the paint from the
    mixing pot through the spray gun and
    back via a pump delivery system is recommended
    for greater filler uniformity.
    For large volume applications, a robotic
    spray system with an HLVP spray gun
    should be used to minimize material loss
    due to overspray and maximize paint
    transfer efficiency. Siphon feed equipment
    can be used for small or prototype
    runs.


    Spray Gun and Pressure

    Use a standard HVLP spray gun with
    approximately 20-40 psi (138-276 kPa)
    atomizing air.

    A fluid nozzle with a minimum orifice diameter
    of 0.040 (1.016) is recommended.
    To obtain maximum adhesion and conductivity,
    dry spraying should be avoided.
    Adjust the spray pressure to achieve a
    proper wet film when applying the conductive
    coating.


    Nominal Dry Film Thickness

    A nominal dry film thickness of 0.001
    inches (25 µm, 1 mil) is recommended
    to obtain > 75 dB shielding effectiveness
    from 80 MHz to 18 GHz. However, a thinner
    or thicker coat may be acceptable
    depending on the shielding requirements
    of the device being protected.
    Allow material to dry 10-20 minutes at
    room temperature between coats to
    avoid solvent entrapment.


    Drying Conditions

    1. Dry at room temperature for
    10-20 minutes.
    2. Continue drying for 30 minutes at
    65°C ± 5.5°C (150°F ± 10°F)
    for 0.001 inches (25 µm, 1 mil)
    thickness.

    Dry longer if thicker film, shorter if
    thinner film, to achieve desired
    conductivity.
    Note: Drying at room temperature
    for 24 hours will achieve similar
    performance.


    Clean-up

    The spray system, including spray
    gun, mixing pot, and containers can
    be cleaned with MEK or Acetone (VOC
    exempt solvent). Masks can be powerwashed
    with Challenge 485S barrier
    coat.


    Storage and Handling

    CHO-SHIELD 2056 should be stored
    at 10ºC to 30ºC (50ºF to 86ºF) and has
    a 12 month shelf life from the date of
    manufacturing in the original sealed
    container. CHO-SHIELD 2056 is a
    flammable liquid. Please consult the
    material safety data sheet for proper
    handling procedures before use.
Description

機能特性

パッケージ

1 gallon aluminum can

プライマー込み

Not required

ポリマー製品ファミリー

フィルター材

Copper

粘度等級

14 to 20 seconds Zahn Cup 2

表面抵抗 (ohms/square)

<= 0.030

遮蔽有効性 (dB)

>75

フィルム厚さ (mm)

0.025

比重

1.13

重量ごとの平均固体

32%

温度の範囲 (C)

-40 to 85

貯蔵寿命 (月)

12

お問合せ

パーカー・ハネフィン日本株式会社
東京都港区白金台3-2-10
白金台ビル2F
〒108-0071
電話 03-6408-3901(営業本部)
FAX  03-5449-7202