bakelite phenolic hylam cotton laminate sheet board

product description

Description of Phenolic Cotton Board

Phenolic cotton cloth laminate sheet, cotton cloth impregnated with phenolic resin, and laminating them under heat and pressure in round-shape mould, also know as thermoset. Offer high electrical and mechanical performance, including good electrical insulating properties, high moisture resistance, good dimentional stability, much better machinability than other phenolics.

Characteristics of Phenolic Cotton Board

1) High electrical and mechanical performance.

2) Easy for fabrication, good dimentional stability, physical strength, resiliency.

3) Better machinability than other products.

Parameter of Phenolic Cotton Board

Standard			GB/T 1303-2009/ IEC60893-2003
Basic Information	Chinese Name		3025	3025A	3026	3027	3021
	IEC		PFCC201	PFCC202	PFCC203	PFCC305	PFCP201
	Basic Material		Cloth				Paper
	Resin		Phenolic				Phenolic
	Color		Brown				Red Brown
No.	Test Item	Unit	Value				Value
1	Density	g/m³	1.3~1.4				1.25~1.4
2	Vertical Layer Bending Strength(normal)	Mpa	≥100	≥90	≥110	≥125	≥120
3	Parallel Layer Impact Strength (simply supported beam method)	KJ/m²	≥7.8
4	Vertical Layer Electrical Strength (90℃ transformer oil)(1mm thickness)	Kv/mm	≥5.1	≥5.1	≥5.1	≥5.1	≥15.8
5	Parallel Layer Breakdown Voltage (90℃ transformer oil)	kv	≥20				≥35
6	Dielectric Constant (50Hz)	-	≤5.5(1MHZ)				≤5.5(1MHZ)
7	Insulation Resistance after Immersion	Ω	≥5*107				≥5*107
8	Proof Tracking Index(PTI)	-	≥100				≥100
9	Temperature Index	-	120				120
10	Water Absorption (1-20mm thickness)	mg	206~406			136~277	180~970
Note: Range values are measured for different thicknesses