3mm Phenolic paper sheet

3mm Phenolic paper sheet 1.Thickness:3-100mm 2. grade: class E. 3. made from paper that impregnated with phenolic resin

  1.Description:  3mm Phenolic paper  sheet is made from paper that impregnated with phenolic resin under pressure and heat. With high mechanical strength and electrical properties

2.Specifications:

1).Thermal grade: class E.2).Thickness : 3-100mm

3).Size: 980 x 1,980mm ± 10mm; 1,000 X2,000mm ± 10mm ; 1030X(2000-2300) ± 10mm , (980-1030)x(980-1500) ± 10mm  

3. standard color:  Brown .orange,black

4. Applications: 

It is used for the insulating spare parts of electrical appliances and transformers, high mechanical properties electrical and mechanical devices.

3021A, 3021B, 3021C (China standard) is in accordance with X, XX, XXX, XP, XXP, XXXP, XPC  ( 

NEMA standard)

Properties	Unit	Index Value	3021A(Fact Value)
Flexural strength perpendicular to laminations	MPa	≥120	126
Bonding strength (≥10mm in thickness)	N	≥3200	4100
Impact Strength	KJ/m2	≥15	17.5
Tensile strength	Mpa	≥100	103
Insulation resistance after immersion in water (D-24/23)	Ω	≥1.0×107	4.5×107
Dielectric strength perpendicular to laminations(in 90±5°C transformer oil, 1 mm in thickness)	MV/m	≥ 84	92 (90±5°C)
Breakdown voltage parallel to laminations	KV	≥ 20	22
(in 20±5°C transformer oil)
Permittivity (50Hz)	—	-	-
Permittivity (1MHz)	—	≤5.5	5
Dissipation factor (50Hz)	—	≤	-
Dissipation factor (1MHz)	—	≤0.05	0.03
Density	g/cm3	1.30-1.45	1.41
Water absorption (D-24/23, 1.6mm in tickness)	mg	≤182	163
Color	—		Organge
Reference standard	—		Enterprise Standard

Properties		Unit	Index Value	Fact Value
			3021B	3021B
Density		g/cm3	1.30-1.45	1.4
Flexural strength		Mpa	≥118	126
Tensile strength		Mpa	≥88	96
Adhesive strength		N	3200	3600
Impact strength		KJ/M2	15	18
insulation resistance Parallel to lamination	normal	MΩ	≥1.0*1014	1.2*105
	damp		≥1.0*102	1.8*103
voltage resistance Parallel to lamination (in 20°C±5°C transformer oil 5min)		kv	≥14	OK
voltage resistance perpendicular to laminate (in 20°C±5°C transformer oil 5min)	0.2-1mm	kv/mm	≥14	OK
	1.1-2mm
	2.1-3mm
thermal stability	<20mm	°C	90	OK
	>20mm

3mm Phenolic paper sheet