Epoxy Cosmic Epoxy E4920FC Cosmic Plastics, Inc.

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Datasheet

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Technical Data Sheet

impact performance	Test Condition	Test Method	Test Result	Test Unit
Impact strength of cantilever beam gap			27	J/m
flammability	Test Condition	Test Method	Test Result	Test Unit
UL flame retardant rating	1.6mm	UL 94	V-0
mechanical properties	Test Condition	Test Method	Test Result	Test Unit
tensile strength			82.7	MPa
Bending modulus			13800	MPa
bending strength			128	MPa
compressive strength			241	MPa
thermal performance	Test Condition	Test Method	Test Result	Test Unit
Linear coefficient of thermal expansion	MD：--3		1.9E-05	cm/cm/°C
	Linear coefficient of thermal expansion	MD：--4		7E-05	cm/cm/°C
		Linear coefficient of thermal expansion	MD：导热系数		0.84	W/m/K
		Linear coefficient of thermal expansion	Linear coefficient of thermal expansion	MD：HeatDistortion		260	°C
Glass transition temperature			175	°C
Physical properties	Test Condition	Test Method	Test Result	Test Unit
density			1.85	g/cm³
Shrinkage rate			2.0to5.0
Shrinkage rate	Shrinkage rate	MD		0.20to0.40	%
Water absorption rate	Equilibrium,50°C		0.25	%
Electrical performance	Test Condition	Test Method	Test Result	Test Unit
Dissipation factor	1kHz		0.012
	Dissipation factor	1MHz		0.011
		Dissipation factor	耐电弧性		180	sec
		Dissipation factor	Dissipation factor	DielectricBreakdown-Wet		56000	V
Surface resistivity			4E+16	ohms
Volume resistivity			5.5E+15	ohms·cm
Dielectric strength	Wet		16	kV/mm
Dielectric constant	1kHz		3.90
Dielectric constant	Dielectric constant	1MHz		4.30
hardness	Test Condition	Test Method	Test Result	Test Unit
Babbitt hardness			65

IMPORTANT NOTES: Plas.com collected the data in the data sheet from the material manufacturers. Plas.com makes the best effort to improve the accuracy of the data, but has no responsibility for the data. We strongly recommend verifying the validity of the data with the material manufacturers before making a final decision.

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