LEXAN™ Copolymer EXL8454

Identification & Functionality

Additives Included

Heat Stabilizer,

Mold Release Agent

Polymer Name

Polycarbonate-Siloxane Copolymer

Plastics & Elastomers Functions

Resin

Technologies

Plastics

Product Families

Plastics — Engineering & Specialty Polymers

High Performance Thermoplastics,

Polycarbonates

Features & Benefits

Labeling Claims

No Added PFAS,

Recyclable,

Sustainable

Materials Features

Good Mold Release,

Heat Stabilized,

High Impact Performance,

High Impact Resistance,

Low Temperature Impact Resistance,

No Added PFAS,

Non-Halogenated,

Recyclable,

Unreinforced

Potential Benefits of LEXAN EXL Resin

• Impact: Best-in-class ductility to -60 ºC with an outstanding balance of ductility and viscosity.
• Weatherability: Excellent retention of mechanical properties upon outdoor exposure.
• Aging: Better retention of properties vs. other polycarbonate resins.
• Flame retardance: FR grades can be used in many ECO-compliant applications.
• Knitline strength: A significant improvement over PC/ABS material
• Chemical resistance: Improved chemical resistance to some chemicals compared to standard polycarbonate

Mechanical Recycling

Process

Debris are washed, melted & transformed into raw material for a new process. Focus on responsible sourcing of high-quality waste streams

Certification

Third-party certification of PCR content conducted by SCS Global Services

Value Proposition

• 21-80% post-consumer recycled content
• Meeting RoHS1 guidelines
• Provides CO2
• reduction & waste depletion options
• Non-brominated & non-chlorinated flame retardant systems
• Up to 2 extra EPEAT points can be achieved
• Broad color space, enhanced performance via
• blending with copolymers
• Drop in solution to existing tools

Applications & Uses

Markets

Consumer Goods,

Electrical & Electronics,

Industrial

Applications

Consumer Goods — Appliances & Electronics

Electrical & Electronics — Devices & Assemblies

Consumer Electronics,

Displays

Industrial — Military & Defense

Advanced Materials

Plastics & Elastomers End Uses

Cell Phones,

Computer Components,

Displays,

Electrical/Electronic Applications,

Military Applications,

Tablets

Plastics & Elastomers Processing Methods

Injection Molding

Properties

Color

Opaque

Flame Rating

UL 94 HB

Mechanical Properties

	Value	Units	Test Method / Conditions
Tensile Stress (Yield, Type I, 50 mm/min) ¹¹	57	MPa	ASTM D638
Tensile Stress (Break, Type I, 50 mm/min) ¹¹	55	MPa	ASTM D638
Tensile Strain (Yield, Type I, 50 mm/min) ¹¹	6	%	ASTM D638
Tensile Strain (Break, Type I, 50 mm/min) ¹¹	100	%	ASTM D638
Tensile Modulus (at 5 mm/min) ¹¹	2200	MPa	ASTM D638
Flexural Stress (Yield, 1.3 mm/min, 50 mm span) ¹¹	90	MPa	ASTM D790
Flexural Modulus (at 1.3 mm/min, 50 mm span) ¹¹	2100	MPa	ASTM D790

Physical Properties

	Value	Units	Test Method / Conditions
Specific Gravity ¹¹	1.2	—	ASTM D792
Mold Shrinkage (flow, 3.2 mm) ʰ ¹¹	0.4 - 0.8	%	SABIC method
Melt Flow Rate (at 300°C, 1.2 kgf) ¹¹	10	g/10 min	ASTM D1238
Water Absorption (at 23°C, 24hrs) ¹¹	0.15	%	SABIC method

Thermal Properties

	Value	Units	Test Method / Conditions
Vicat Softening Temperature (Rate B/50) ¹¹	145	°C	ASTM D1525
Heat Deflection Temperature (at 1.82 MPa, 3.2mm, Unannealed) ¹¹	123	°C	ASTM D648
Coefficient of Thermal Expansion (at -40°C to 40°C, flow) ¹¹	0.00006	1/°C	ASTM E831
Coefficient of Thermal Expansion (at -40°C to 40°C, xflow) ¹¹	0.00006	1/°C	ASTM E831
Relative Temperature Index (Electrical) ᵖ ¹¹	80	°C	UL 746B
Relative Temperature Index (Mechanical with impact) ᵖ ¹¹	80	°C	UL 746B
Relative Temperature Index (Mechanical without impact) ᵖ ¹¹	80	°C	UL 746B

Electrical Properties

	Value	Units	Test Method / Conditions
Volume Resistivity ¹¹	min. 1.E+15	Ω.cm	ASTM D257
Surface Resistivity ¹¹	min. 1.E+15	Ω	ASTM D257
Dielectric Strength (in oil, at 0.8mm) ¹¹	15	kV/mm	ASTM D149
Relative Permittivity (1 MHz) ¹¹	3	—	ASTM D150
Dissipation Factor (at at 1 MHz) ¹¹	0.0093	—	ASTM D150
Hot Wire Ignition (PLC 3) ¹¹	min. 3	mm	UL 746A

Impact Properties

	Value	Units	Test Method / Conditions
Izod Impact (Notched, at 23°C) ¹¹	800	J/m	ASTM D256
Izod Impact (Notched, at -30°C) ¹¹	700	J/m	ASTM D256
Izod Impact (Notched, at -40°C) ¹¹	650	J/m	ASTM D256
Instrumented Dart Impact Total Energy (at 23°C) ¹¹	70	J	ASTM D3763
Charpy Impact (at 23°C, V-notch Edgew 80*10*3 sp=62mm) ¹¹	67	kJ/m²	ISO 179/1eA
Charpy Impact (at -30°C, V-notch Edgew 80*10*3 sp=62mm) ¹¹	58	kJ/m²	ISO 179/1eA
Charpy Impact (at -40°C, V-notch Edgew 80*10*3 sp=62mm) ¹¹	54	kJ/m²	ISO 179/1eA
Charpy Impact (at 23°C, V-notch Edgew 80*10*4 sp=62mm) ¹¹	65	kJ/m²	ISO 179/1eA
Charpy Impact (at -30°C, V-notch Edgew 80*10*4 sp=62mm) ¹¹	27	kJ/m²	ISO 179/1eA

Injection Molding

	Value	Units	Test Method / Conditions
Drying Temperature ⁷	120	°C	—
Drying Time ⁷	3 - 4	Hrs	—
Drying Time (Cumulative) ⁷	48	Hrs	—
Maximum Moisture Content ⁷	0.02	%	—
Melt Temperature ⁷	295 - 315	°C	—
Nozzle Temperature ⁷	290 - 310	°C	—
Front - Zone 3 Temperature ⁷	295 - 315	°C	—
Middle - Zone 2 Temperature ⁷	280 - 305	°C	—
Rear - Zone 1 Temperature ⁷	270 - 295	°C	—
Mold Temperature ⁷	70 - 95	°C	—
Back Pressure ⁷	0.3 - 0.7	MPa	—
Screw Speed ⁷	40 - 70	rpm	—
Shot to Cylinder Size ⁷	40 - 60	%	—
Vent Depth ⁷	0.025 - 0.076	mm	—

Flame Characteristics

	Value	Units	Test Method / Conditions
UL Recognized (94HB Flame Class Rating) ᵖ	min. 0.75	mm	UL 94
UL Recognized (94HB Flame Class Rating) ᵖ	min. 0.4	mm	UL 94
Glow Wire Ignitability Temperature (at 3.0 mm) ᵖ	875	°C	IEC 60695-2-13
Glow Wire Ignitability Temperature (at 1.5 mm) ᵖ	875	°C	IEC 60695-2-13
Glow Wire Ignitability Temperature (at 1.0 mm) ᵖ	875	°C	IEC 60695-2-13
Glow Wire Ignitability Temperature (at 0.75 mm) ᵖ	850	°C	IEC 60695-2-13
Glow Wire Flammability Index (at 3 mm) ᵖ	960	°C	IEC 60695-2-12
Glow Wire Flammability Index (at 1.5 mm) ᵖ	850	°C	IEC 60695-2-12
Glow Wire Flammability Index (at 1 mm) ᵖ	850	°C	IEC 60695-2-12
Glow Wire Flammability Index (at 0.75 mm) ᵖ	825	°C	IEC 60695-2-12

Note

• ʰ Measurements made from laboratory test coupon. Actual shrinkage may vary outside of range due to differences in processing conditions, equipment, part geometry and tool design. It is recommended that mold shrinkage studies be performed with surrogate or legacy tooling prior to cutting tools for new molded article.
• ᵖ UL ratings shown on the technical datasheet might not cover the full range of thicknesses and colors. For details, please see the UL Yellow Card.
• ⁷ Injection Molding parameters are only mentioned as general guidelines. These may not apply or may need adjustment in specific situations such as low shot sizes, large part molding, thin wall molding and gas-assist molding.
• ¹¹ The information stated on Technical Datasheets should be used as indicative only for material selection purposes and not be utilized as specification or used for part or tool design.

 

Regulatory & Compliance

Certifications & Compliance

UL 94

Technical Details & Test Data

EXL Copolymer Resins: Low Temperature, High Impact Resistance with Post Consumer Recycling Material Solutions

Packaging & Availability

Regional Availability

• Asia
• Europe