FRP Sheet Material with Excellent Insulating Properties Laminated Sheet

A strong plastic sheet made by uniformly coating glass cloth or matting with resin, then heating and pressure forming it in a high-pressure, multi-level press.

Category	Conditions	SL-ME	SL-MP
Resin		Epoxy	Polyester
Base material		Glass matt
Heat-registant		155℃ equivalent	130℃ equivalent
Flatwise-withstand voltage [kV/mm]	-	12–15	10–13
Breakdown phenomenon [kV/mm]	-	20–25	15–20
Edgewise-withstand voltage [kV]	A	>40	>40
Edgewise-withstand voltage [kV]	D-48/50	>15	>15
Insulation resistance [Ω]	A	10¹³–10¹⁵	10¹³–10¹⁵
Insulation resistance [Ω]	D-2/100	10⁸–10¹⁰	10⁷–10⁹
Volume resistivity [Ω cm]	-	10¹³–10¹⁵	10¹³–10¹⁵
Dielectric constant	1MHz	5.5–6.5	5.5–6.5
Dielectric dissipation factor [%]	1MHz	1.5–2.0	1.5–2.0
Arc resistance [sec]	-	160–180	160–180
Tensile strength [N/mm²]	-	130–160	100–130
Bending strength [N/mm²]	-	250–290	200–250
Compressive strength [N/mm²]	perpendicular to layer	390–440	340–390
Compressive strength [N/mm²]	parallel to layer	250–290	200–250
Specific gravity		1.9–2.1	1.9–2.1
Water absorption rate [%]		0.1–0.2	0.1–0.2
Heat-resistance test (condition: determination)		E24/180: Pass	E24/150: Pass
Loss on heating (condition: [%])		E24/150: 0.5–1.5	E24/150: 0.5–1.5