product description

Characteristic of Bismaleimide Laminated Glass Cloth Board

Bismaleimide laminated glass fiber sheet board has the temperature grade of class H. It has higher mechanical strength, heat resistance, dielectric properties, permeability, radiation resistance and flame resistance, which can be used for H-class motor and electrical appliance as components of insulation parts.

Parameter of Bismaleimide Laminated Glass Cloth Board

Standard			GB/T 1303-2009/ IEC60893-2004
Basic Information	Chinese Name		-
	IEC		BMIGC301
	NEMA		-
	Basic Material		Glass fiber cloth
	Resin		Bismaleimide
	Color		Brownish red
No.	Test Item	Unit	Value
1	Density	g/m³	1.8~1.95
2	Vertical Layer Bending Strength(normal)	Mpa	≥350
3	Parallel Layer Impact Strength (simply supported beam method)	KJ/m²	≥60
4	Vertical Layer Electrical Strength (90℃ transformer oil)(1mm thickness)	Kv/mm	≥14.0
5	Parallel Layer Breakdown Voltage (90℃ transformer oil)	kv	≥35
6	Dielectric Constant (50Hz)	-	≤5.5
7	Dielectric Loss Factor(50Hz)		≤0.05
8	Insulation Resistance after Immersion	Ω	≥1.0*10^8
9	Proof Tracking Index(PTI)	-	≥280
10	Combustibility	-	HB40
11	Temperature Index	-	180
12	Water Absorption (1-20mm thickness)	mg	64~193
Note: Range value are measured for different thicknesses