Aramid paperboard

Aramid paperboard was specially made from meta-aramid short fiber and pulp , which are well known for their excellent mechanical properties ,high temperature resistance,low dielectric constant and electrical insulating property.

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Aramid paper series

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Property	Unit	Model				Test
		593			594
Thickness	mm	3.0			6.5	ASTM D374-99
Tolerance	%	±6%			±8%
Density	g/cm³	0.8			1.05
Tensile strength	kN/m	MD	310		420	ASTM D828-97
		CD	142		170
Elongation	%	MD	11.0		9.8	IEC 61629-2：1996
		CD	14.2		11.2
Electrical performance in air
Dielectric strength	kV/mm	16.8			21	ASTM 149-09
Dielectric constant	50HZ	2.39			3.0	ASTM D150-11
Loss tangent	50HZ	8.32×10-3			8.0×10-3
Volume resistivity	Ω·m	5.5×1014			6×1014	ASTM 257-07
Surface resistivity	Ω	6.7×1016			8.7×1016
Electrical performance in oil
Oil absorption rate	%	38			20	IEC 60641-2：2004
Dielectric strength	kV/mm	45.5			40.0	ASTM 149-09
Dielectric constant	50HZ	3.25			4.0	ASTM D150-11
Loss tangent	50HZ	20℃		7.11×10-3	8.33×10-3
		130℃		5.56×10-3	9.89×10-3
Volume resistivity		20℃		1.5×1014	2.5×1014	ASTM D257-07