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Master Bond adhesives
LG Chemical IG840 PMMA, General Purpose Grade for Injection Molding  (discontinued **)
Categories: Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, General Purpose, Molded

Material Notes:
  • General purpose grade with better flowability than IH 830 but slightly below in heat resistance
  • Mechanical strength and surface hardness
Features:
  • Excellent transparency and elegance
  • Weather resistance and chemical resistance
  • Surface hardness and coloring property
  • Superior electrical resistance and mechanical properties
  • No harm caused

Applications:

  • Automotive Parts:
    • Rear lamp cover
    • Turn signal lamp cover
    • Indoor lamp cover
    • Rear quarter glass
    • Automotive badge
  • Electric or Electronic Parts:
    • LCD light guide plate
    • Microwave oven door/front panel
    • Cassette door
    • VCR cover/front panel
    • Car stereo panel
    • Dial scale
    • Light pipe
  • Sheet:
    • Signboard
    • Showcase
    • Light dome
    • Aquarium
    • Picture frame
  • Lighting and Miscellaneous:
    • Solid surface
    • Lighting cover
    • Ornaments
    • Watch crystal
    • Optical lens
    • Piano keyboard

Information Provided by LG Chem

Vendors:
Available Properties
  • Specific Gravity, ASTM D792
  • Water Absorption, ASTM D570, 24 hours
  • Linear Mold Shrinkage, ASTM D955
  • Melt Index of Compound, ASTM D1238
  • Hardness, Rockwell M, ASTM D785
  • Tensile Strength at Break, ASTM D638
  • Elongation at Break, ASTM D638
  • Flexural Strength, ASTM D790
  • Flexural Modulus, ASTM D790
  • Izod Impact, Notched, ASTM D256
  • Volume Resistivity, ASTM D257
  • Dielectric Constant, ASTM D150
  • Dielectric Strength, ASTM D149, 4kV/s
  • Dissipation Factor, ASTM D150
  • CTE, linear, ASTM D696
  • Deflection Temperature at 1.8 MPa (264 psi), ASTM D648
  • Vicat Softening Point, ASTM D1525, 1 kg
  • Refractive Index, ASTM D542
  • Haze, ASTM D1003
  • Transmission, Visible, ASTM D1003
  • Processing Temperature, Injection molding cylinder temperature
  • Mold Temperature
  • Drying Temperature
  • Dry Time
  • Injection Pressure
  • Annealing Temperature, 3-5 hours
  
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Manufacturer Notes:
none

Category Notes
Plastic

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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