Polyply Composites Polyply L-50

Chemical Family: Polyesters

Polyply Composites Polyply L-50 is a track resistant, flame retardant laminate which meets or exceeds NEMA GPO-3 requirements. All grades of Polyply industrial sheet are produced using polyester resin and fiberglass reinforcement and it is U.L recognized.

Product families

Applications

Electrical & Electronics — Parts & Components

Housings & Enclosures

Product Families

Composite Materials — Prepregs & Molding Compounds

Laminates

Other characteristics

End Uses: Insulators
Functions: Laminate
Polymer Name: Polyester (unspecified)
Reinforcement Material: Glass Fibers
Color: Red
Markets: Electrical & Electronics
Flame Rating: UL 94 V0
Technology: Composite Materials
Composites End Use: Insulators
Material Features: Excellent Track Resistance Properties
Flame Retardant
Certifications and Compliance: UL 94
Composite Materials Functions: Laminate

Technical data

Table 1 of 3

9 rows

Characteristic	Value	Unit	Method
Barcol Hardness	50	—	D2583
Compressive Strength	32800	psi	D695
Flexural Modules	1.23 x 10⁶	psi	D790
Flexural Strength	23200	psi	D790
IZOD Impact Strength (Notched)	8.2	ft-lb/in	D256
Shear Strength	14000	psi	D732
Specific Gravity	1.8	—	D792
Tensile Strength	10000	psi	D638
Water Absorption (Weight)	0.21	%	D570

Table 2 of 3

4 rows

Characteristic	Value	Unit	Method
Coefficient of Thermal Expansion	2 x 10⁻⁵	in/in/C	D696
Thermal Conductivity	1.9	btu/hr/ft2/in/°F	C177
U.L. Temperature Index (Electrical)	130	°C	UL746B
U.L. Temperature Index (Mechanical)	140	°C	UL746B

Table 3 of 3

8 rows

Characteristic	Value	Unit	Method
Comparative Tracking Index	min. 500	volts	D3638
Dielectric Constant (60Hz)	4.8	—	D150
Dielectric Constant (MHz)	4.7	—	D150
Dielectric Strength (In Oil)	400	volts/mil	D149
Dielectric Strength (Parallel In Oil)	57	kV	D149
Dissipation Factor (60Hz)	0.013	—	D150
Dissipation Factor (MHz)	0.011	—	D150
High Voltage Arc Resistance	min. 200	sec	D495