Grade H Halogen-free fire retardant Epoxy glass fiber laminated sheet

Short Description:

  • Thickness: 0.3mm-80mm
  • Dimension: 970*1970mm 970*1200mm
  • Color: Dark Brown
  • Customization: Processing based on Drawings
  • Product Detail

    Product Tags

    Product Description

    This product is a laminated product which made with the chemical treatment electrical purposed alkali-free glass cloth as the backing material,by hot pressing with high Tg epoxy resin as binder.It has high mechanical strength under high temperature,with good electrical stability under high humidity.The thermostability is grade F,and it is Halogen-free fire retardant suitable for all kinds of motor, electric appliances,electronic and other fields.


    1.Good electrical stability under high humidity;
    2.High mechanical strength under high temperature,
    the mechanical strength retention rate≥50% under 180℃;
    3.Moisture resistance;
    4.Heat resistance;
    5.Temperature resistance:Grade H
    6.Halogen-free and fire retardant


    Compliance with standards

    In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates - Part 4: epoxy resin hard laminates.

    Appearance: the surface should be flat, free of bubbles, pits and wrinkles, but other defects that do not affect the use are allowed, such as: scratches, indentation, stains and a few spots.The edge shall be cut neatly, and the end face shall not be delaminated and cracked.


    Suitable for all kinds of motor, electric appliances,electronic and other fields.

    Main Performance Index

    1 Density g/cm³ 1.8-2.0
    2 Water absorption Rate % ≤0.5
    3 Vertical bending strength Normal Lengthway MPa ≥450
    Horizontal ≥380
    180±5℃ Lengthway ≥250
    Horizontal ≥190
    4 Impact strength (charpy type) No  gap Lengthway KJ/m² ≥180
    Horizontal ≥137
    5 Compression strength Lengthway MPa ≥500
    Horizontal ≥250
    6 Tensile strength Lengthway MPa ≥320
    Horizontal ≥300
    7 Bonding strength N ≥7200
    8 Vertical electric strength
    (in oil of 90℃±2℃)
    1mm KV/mm ≥17.0
    2mm ≥14.9
    3mm ≥13.8
    9 Parallel breakdown voltage(1 min in oil of 90℃±2℃) KV ≥40
    10 Dielectric dissiption factor(50Hz) - ≤0.04
    11 Parrallel Insulation Resistance Normal ≥1.0×1012
    12 Combustibility(UL-94) Level V-0

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