Fiberglass Rod
2 year ago
fr4 epoxy fiberglass laminate sheet Electrical insulation material board G10 3240 .Fiber glass epoxy FR4 sheet is a NEMA grade designation for glass-reinforced epoxy laminate material.Fiber glass epoxy FR4 sheet is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
"FR" stands for flame retardant, and denotes that the material complies with the standard UL94V-0.
FR4 sheet is a popular and versatile high-pressure thermal plastic laminate grade with good strength to weight ratios.
With near zero water absorption, fiber glass epoxy sheet is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating
qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this
grade for a wide variety of electrical and mechanical applications.
Fiberglass Epoxy FR4 Sheet Technical Data
|
PROPERTIES
|
UNIT
|
STANDARD VALUE
|
TESTING RESULT
|
|
Flexural strength perpendicular to laminations – under normal room temperature
|
MPa
|
≥ 350
|
360
|
|
Notch Impact strength parallel to lamination (Notched charpy)
|
kJ/m^2
|
≥ 37
|
45
|
|
Dielectric strength perpendicular to laminations (in oil 90±2℃), 1.0mm in thickness
|
kV/mm
|
≥ 14.2
|
20.5
|
|
Breakdown voltage parallel to laminations (in oil 90±2℃)
|
kV
|
≥ 35
|
40
|
|
Water absorption rate, 1.6mm in thickness
|
%
|
≤ 0.25
|
0.02
|
|
Insulation resistance Impregnated in water(22℃, 50%RH)
|
Ω
|
≥5.0×10^10
|
5.6×10^10
|
|
Flammability (FR4)
|
class
|
FV0
|
FV0
|
|
Density
|
g/cm3
|
1.7-1.9
|
1.7-1.9
|
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