Flame Retardant Masterbatch
Self-extinguishing polymer. UL 94 V0 capable. LSZH cable ready.
Flame Retardant Masterbatch (FR) makes plastic resist catching fire and self-extinguish once the flame is removed. It comes in halogen-free and halogenated grades to meet UL 94 V0 and V2 ratings on PE, PP and EVA. Used in cable jackets, electrical housings and building components.
A flame retardant masterbatch range covering halogen-free intumescent systems, mineral hydrate systems and halogenated systems. The default supply is a halogen-free intumescent grade with a char-former and a blowing agent, on an LDPE or PP carrier. Mineral-hydrate grades are available for cable jacket compounds. A halogenated grade with synergist is supplied where thin-wall weight efficiency dictates the choice. Engineered for cable, electrical, construction and electronics work that must clear UL 94 V0 and the relevant cable flammability standards.
Specifications
Grade-specific values and Certificate of Analysis are provided on confirmed dispatch. Contact us to confirm the right grade for your application.
- Appearance
- Off-white or grey cylindrical pellets
- Active chemistry
- Halogen-free or halogenated flame-retardant additive
- Carrier resin
- LDPE / PP / EVA
- Recommended loading
- Varies by application; recommended dosage shared per grade
- Rating
- UL94 V-2 / V-0 grades available
- Packaging
- 25 kg PE-lined paper sacks
Key benefits
Self-extinguishing performance
Stops flame propagation on ignition and meets stringent fire-safety standards for cables, electronics and construction parts.
UL94 V-2 / V-0 ratings achievable
Formulated grades hit industry-standard flammability ratings across PE, PP and EVA at recommended loading levels.
Low smoke emission options
LSZH grades minimise smoke density and toxic fume release in case of fire, critical for tunnel and transit cable installations.
Halogen-free variants available
Halogen-free flame-retardant chemistries deliver environmentally friendly FR performance without halogens.
Applications
Frequently asked questions
What loading reaches UL 94 V0?
Loading to reach UL 94 V0 depends on the polymer, part geometry and bar thickness. Halogen-free intumescent grades on PP require higher total loading than halogenated systems. Mineral-hydrate EVA cable compounds require even higher loading. The halogenated grade is more weight-efficient at thin wall. Final loading is always bar-thickness dependent; we recommend a UL 94 verification on the actual part geometry and can supply matched grades with dosing guidance.
Halogen-free or halogenated, which one?
For cable, building wire, mass-transit interior and any LSZH specification, halogen-free is mandatory. Intumescent systems give V0 with low smoke and no acid gas; mineral-hydrate systems give low smoke with active heat absorption. For thin-wall electronics housings and connectors where total loading must remain within processable limits, the halogenated grade is more weight-efficient; we share specific guidance at the grade-selection stage. We supply both classes; the right pick depends on end-use regulation and mechanical budget.
How does the intumescent system work?
An intumescent flame retardant has three working parts. The acid source decomposes on heating and releases an acid. The carbon source is dehydrated by that acid into a carbonaceous char. The blowing agent decomposes endothermically and releases an inert gas, which expands the char into a thick, insulating foam. The foam blocks heat and oxygen transfer to the polymer below, so combustion self-extinguishes.
Which polymers and cable standards are covered?
Standard carriers are LDPE, PP and EVA, compatible with HDPE, LDPE, LLDPE, PP, EVA, TPE and TPU compounds. Cable grades are formulated to meet vertical flame spread tests, Indian cable sheath requirements, and UL 94 V0 / V1 / V2 ratings for moulded parts. Smoke density testing is available on request for transit and infrastructure work.
Can I get a trial sample?
Yes. We supply trial samples for line evaluation and UL bar testing. Share polymer grade, end-use (cable jacket, moulding, profile), target standard (UL 94 V0 / V1 / V2) and bar thickness. We ship a matched grade with a Certificate of Analysis. Sample shipping is free within India; export samples are available with freight at cost.
What’s the lead time?
Standard halogen-free intumescent and mineral-hydrate grades ship in 10 to 18 working days. Halogenated grades and LSZH cable compounds matched to a specific standard take 3 to 5 weeks. For bulk requirements above 2 tonnes, we schedule production against an annual offtake plan. We confirm an exact timeline at the quote stage.