San Diego Plastics
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National City  CA  91950
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AC-300™ Acrylic
Static Dissipative Plastic
Description
AC-300™ Acrylic is a plastic sheet product designed to control static electricity for a wide range of end uses. It is a premium quality acrylic sheet which has been surfaced with SciCron Technologies' proprietary, clear, C-300™ static dissipative surfacing. This unique technology prevents charge generation on the sheet surfaces, thereby controlling particulate attraction and preventing electrostatic discharge (ESD) events. This performance is permanent and totally independent of humidity. AC-300 Acrylic offers exceptional design versatility since it fabricates simply, is light in weight and is available in large sheet sizes. It also exhibits excellent optical properties, chemical resistance, surface hardness and mar resistance.

Applications
AC-300 Acrylic resists tribocharging under all circumstances and cannot generate a charge when properly grounded. This makes it ideal for use in manufacturing and assembly operations for charge sensitive electronic components where it can help prevent both immediate and latent ESD caused defects. Since it resists charge build-up it does not attract contaminants, so it can also help prevent contamination-related rejects in ultra-clean manufacturing operations. Consequently, it is suitable for use in the semi-conductor, electronic, and micro-manufacturing industries. Typical applications include; covers, windows, doors, and access panels for electronic equipment, machines and instruments; fabricated desiccators, cabinets, and boxes; transparent room partitions and pass-thru modules; process equipment enclosures; and mini-environment glazing panels. The product also has many general industrial uses, including protection for static charge sensitive manufacturing devices and control of spark discharge in explosive environments.

Fabrication
AC-300 Acrylic is easily fabricated into flat surface configurations using the same equipment and fabrication techniques generally employed with unsurfaced acrylic sheet products. It should not be used for heat formed bent configurations since the hard, cured, C-300 surface is not designed for heat bending. When solvent welding, it is necessary to remove the C-300 surface mechanically to achieve a good bond. For more information on fabrication refer to SciCron Technologies Technical Information Bulletin No. SP-01.

Features and Benefits
 
  • Cannot be tribocharged when properly grounded - Prevents buildup of static charge and accumulation of harmful contamination.
  • Electrostatic decay in less than 0.05 second per Federal Test Standard 101C, Method 4046.1 - Results in rapid static dissipation without arcing.
  • Surface resistivity of 106 - 108 ohms per square - Provides for ESD control without the need for ionization.
  • Permanence in static dissipation performance - Avoids cost of application of temporary topical anti-stats.
  • Humidity independent static charge control - Avoids inconvenience of maintaining high levels of humidity and damage caused by such humidity.
  • Advanced technology, uniform surface treatment - Avoids conductive discontinuities (charged "hot spots") often found with non-uniform temporary topical anti-stats.
  • Excellent optical properties - C-300 surface provides excellent clarity for optimum use of available light.
  • Superior chemical resistance - Reduces risk of solvent or chemical surface damage.
  • Hard, mar resistant, durable surface - C-300 surface, harder than the base plastic, reduces risk of damage to the sheet surfaces.
  • Superior fabrication characteristics - Results in optimum workability during part fabrication.

    Availability
    AC-300 Acrylic, in cell cast type, is available in clear and a variety of standard transparent colors including tints which filter wave-lengths that can interfere with processing operations. White translucent and colored opaque grades are also available. Continuously cast and extruded types are available in some sizes and thicknesses upon request.

    Note: Cell cast is a premium form of acrylic plastic but it has a wider thickness variation than other acrylic types. Therefore, continuously cast or extruded material should be specified if a narrow thickness tolerance range is required.

    Standard Dimensions (Nominal)
    Thickness: 3mm (1/8"), 4.5mm (3/16"), 6mm (1/4"), 9mm (3/8"), 12mm (1/2") - Note: 9mm and 12mm - cell cast only.
    Standard Sheet Size: 48" x 96"
    Other sizes and thicknesses, including oversize sheets, available upon request.

    Made in USA


    •  

    AC-300™ Acrylic
    Typical Physical Properties (Typical but not guaranteed values for 0.25 inch material)
    property test method units AC-300
    PHYSICAL
    Specific Gravity ASTM D-792 -- 1.19
    Pencil Hardness ASTM D-3363 Hardness Scale 5H
    MECHANICAL
    Tensile Strength--Ultimate ASTM D-638 psi 10,000
    Tensile Strength--Elongation ASTM D-638 % 4.2
    Tensile Modulus ASTM D-638 psi 400,000
    Flexural Strength ASTM D-790 psi 16,500
    Flexural Modulus ASTM D-790 psi 475,000
    Compressive Strength ASTM D-695 psi 18,000
    Izod Impact Strength (milled notch) ASTM D-256 ft-lb/inch of notch 0.4
    THERMAL
    Deflection Temperature (264 psi load) ASTM D-648 oF 210
    Vicat Softening Point ASTM D-1525 of 239
    Maximum Continuous Service Temperature -- of 180
    Coefficient of Thermal Expansion ASTM D-696 in/in/of 3.5x 10-5
    Coefficient of Thermal Conductivity Cenco-Fitch BTU•in/hr•ft2•of 1.3
    FLAMMABILITY
    Horizontal Burn (Flame Spread) ASTM D-635 inch/min 1.1
    UL 94 Rating UL 94 UL Classification HB
    OPTICAL
    3mm Transparent Clear Transmittance--Total ASTM D-1003 % 80
    Haze ASTM D-1003 % Less than 3.0
    ELECTRICAL
    Surface Resistivity ASTM D-257 ohms/sq 106-108
    Surface Resistance EOS/ESD S11.11 ohms 105-107
    Electrostatic Decay FTS 101C Method 4046.1* sec Less than 0.05
    * Federal Test Standard 101C, Method 4046.1 as described in EIA-541, Appendix F, Measurement of Electrostatic Decay Properties of Dissipative Planar Materials

     

    Chemical Resistance ASTM D-543
    Samples immersed in the specified chemicals for 24 hours at room temperature and then visually examined
    Chemical Surface Attack Visual Evaluation
    Deionized Water None Clear
    30% Sodium Hydroxide None Clear
    30% Sulfuric Acid None Clear
    30% Nitric Acid Slight pitting Clear
    48% Hydrofluoric Acid Severe Attack White, rubbery
    Methanol Slight pitting Hazy
    Ethanol None Clear
    Isopropyl Alcohol None Clear
    Acetone Severe pitting Coating clear-plastic attacked
    Methylene Chloride Sample dissolved Sample dissolved

     

    Light Transmission Spectral Analysis
    PRECAUTIONS:
    1. Acrylic plastic is a combustible thermoplastic. Avoid exposure to flame and excessive heat. Observe fire precautions appropriate for comparable forms of wood and paper.
    2. For building applications, comply with applicable code regulations.
    3. Clean with soap and water. Do not use abrasives. Avoid inappropriate contact with solvents.

     

     
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