Flame Retardant Materials

Kelvinite is the Next Generation of Flame Retardant Polymers and Composites

Legacy FR test standards were established around the technical limitations of first generation FRPP and FRPE formulations. Highland Kelvinite is a breakthrough in FR science that sets the new standard for performance, safety, and sustainability. Our Yellow Card verified Kelvinite polymers and composites provide superior flame retardancy, electrical resistance, and formability—even at thin gauges.

Addressing Antimony Supply Chain Challenges

Recent export restrictions on antimony from China have created challenges for manufacturers who rely on this critical mineral. Kelvinite halogen-free materials offer a stable and readily available alternative to antimony-based products.

Avoid supply chain disruptions and price fluctuations with Highland Plastics Kelvinite.

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Kelvinite 2100 HFFR is UL94 V-0 and VTM-0 at Thin Gauges

With a mission-focus on innovation, we challenged our materials engineers to re-examine long-held assumptions about the limitations of flame retardant polymers. They rose to that challenge and reinvented FRPP. Kelvinite 2100 is the first FRPP with these game-changing characteristics at thin gauges:

Halogen-free
Self-extinguishing
Non-drip
Charring
UL94 V-0 and VTM-0 Yellow Card at 0.010 in. (0.25 mm)

Kelvinite 2100 UL94 VTM-0 / V-0 Burn Chamber Tests

Complies with Evolving Environmental and Safety Standards

Kelvinite 2100 HFFR reduces your risk as consumer safety and environmental standards become increasingly stringent.

Halogen-free
Antimony-free
Bromine-free
Free of Polybrominated Diphenyl Ethers (PBDEs)
Compliant with RoHs and REACH material requirements
Reduce scrap with custom widths and gauges

Enhanced Properties Support a Wider Range of Applications

Flame retardancy is defined by burn performance at a given thickness. When evaluating whether a flame retardant material is suitable for a forming application you should consider how flame retardancy will be affected by part geometry. Challenging geometries in forming can cause flame retardant materials to become flammable as part walls become too thin during the molding process. Kelvinite 2100 revolutionizes FRPP for formers by offering zero-drip flame retardancy at gauges as thin as 0.010″, allowing you to confidently form a part and retain flame retardancy on every surface.

Superior elongation for deep draw forming
Exceptional flexural fatigue resistance for living hinge applications
High impact resistance for parts in demanding environments
Superior resistance to tracking under wet and contaminated conditions, with a CTI of over 600V
Excellent resistivity and dielectric strength for critical electrical applications
Intumescent and zero-drip to provide a true flame barrier
Supports most die-cutting, knife-cutting, kiss-cutting, snap-fit, and lamination operations

Kelvinite 2200 FRPP meets UL 94 V-0 at Thin Gauges

Kelvinite 2200 is a halogenated flame retardant polypropylene designed to meet stringent flammability and electrical standards without compromising processability. With verified UL 94 V-0 performance at 0.010” and above, it offers exceptional protection for critical components in demanding environments.

Halogenated
UL 94 V-0 at 0.010″ (0.25mm)
Yellow Card verified
Self-extinguishing
600V CTI
High resistivity and dielectric strength
RoHS and REACH compliant

Kelvinite 2200 UL94 VTM-0 / V-0 Burn Chamber Tests

UL 94 V-0 Flame Retardancy Achieved by Intumescent Charring or Drip-and-Extinguish

See How Kelvinite 2100 and 2200 Respond to Vertical Flame Exposure

This comparative flame test demonstrates how both materials achieve UL 94 V-0 ratings—even at thin gauges—through distinct engineered behaviors. Halogen-free Kelvinite 2100 HFFR PP relies on charring and provides an intumescent flame barrier that self-extinguishes without dripping. In contrast, halogenated Kelvinite 2200 FRPP is engineered to use a drip-and-extinguish behavior to pass UL 94 V-0. Each advanced formulation supports different regulatory, design, and performance priorities across a wide range of applications.

Kelvinite Composite Flame Shields

Kelvinite Composite Flame Shields are engineered for next-generation protection against battery fires and thermal runaway events in electric vehicles and high-risk energy storage systems. Our innovative composites combine advanced intumescent and structural layers to deliver robust, multi-stage flame resistance and mechanical integrity under extreme thermal stress—and have proven their performance by surviving all 10 cycles of the rigorous UL 2596 torch-and-grit testing protocol.

Superior Sourcing and Supply Chain

Highland Kelvinite is manufactured in the U.S. and available with a 4-week lead time.

Sheets and Rolls

Width: 14”–78” (35.56–198.12 cm) wide
Gauge: 0.010”–0.374” (0.25 –9.499 mm)

Compounds

Injection molding and extrusion compounds
Shipping: 1000 lb. gaylords, super sacks, or bulk truck

Kelvinite Compounds and Sheet Goods

Compound	Features	TDS
Kelvinite 2100	Halogen-free, UL 94 VTM-0 at 0.010″, UL94 V-0 at 0.017"
Kelvinite 2200	Halogenated, UL 94 VTM-0 at 0.010″, UL94 V-0 at 0.017"
Kelvinite Custom	We can design bespoke FR materials or composites specific to your application.

Highland Kelvinite vs Legacy FRPP

Properties	Legacy FRPP	Kelvinite 2200	Legacy HFFR	Kelvinite 2100
Commercial Properties
Designed and Manufactured in the USA	No	Yes	No	Yes
Subject to Antimony Restrictions	Yes	Yes	No	No
Lead time	16 weeks	4 weeks	16 weeks	4 weeks
Custom sizes available	No	Yes	No	Yes
Flammability Properties
Halogen-free, zero-drip, char forming	No	No	Yes	Yes
Flammability	VTM-0, V-0	VTM-0, V-0	VTM-0	VTM-0, V-0
Electrical Properties
High Voltage Arc Tracking (PLC - in/min)	0	0	1	0
Hot Wire Ignition (PLC - seconds)	0	0	4	0
Comparative Tracking Index (PLC)	600V / PLC 0	600V / PLC 0	175V / PLC 3	600V / PLC 0
Volume Resistivity (ohm-cm)	10^15	10^16	10^16	10^14
Breakdown Voltage @ 0.030" (kV)	29.6	39.9	-	7.5
Breakdown Voltage @ 0.010" (kV)	16.3	23.4	17.5	4.5
Dissipation Factor	0.0023	0.0022	0.0072	0.0823
Mechanical and Physical Properties
Base Polymer	Polypropylene	Polypropylene	Polycarbonate	Polypropylene
Tensile Yield (psi)	4000	3700	7000	900
Izod Impact (J/m)	92.4	300	700	310
Elongation (MD) (%)	174	278	100	300
Flex Modulus (psi)	278,000	288,000	400,000	120,000
Living Hinge Performance (cycles)	>225,000	>225,000	Unsuitable	>225,000
Density (g/cc)	1.035	1.045	1.21	1.26
Surface Energy (as produced)	>50	>50	>50	>50