Application guide for choosing flame retardant additives for plastics and polymers, including PP, PE, PVC, PC, PC/ABS, PA, ABS, PU and LSZH cable compounds. Compare additive, masterbatch, halogen-free and halogenated options by resin, process and target flame rating.
Fig. AP01 — polymer application mapUse a real image showing plastic pellets, sample plaques or molded parts labeled by resin. The image should help buyers understand this page is about material selection, not only product packaging.
A useful flame retardant recommendation starts with the base plastic. The same additive system can behave differently in polypropylene, PVC, PC/ABS, nylon or LSZH cable compounds because processing temperature, polarity, smoke target and mechanical retention are not the same.
Use powder flame retardant additives or compounded blends when you control extrusion recipes, active loading, dispersion and cost balance internally.
Use flame retardant masterbatch when cleaner dosing, pre-dispersion and simpler line operation are more important than building the full additive package from zero.
Use halogen-free or low-smoke systems when the application must consider RoHS, REACH, LSZH cable requirements, smoke density or customer restricted substance lists.
Fig. AP02 — PP, PVC, PC and PA pellets with molded test plaquesShows resin coverage and application-based material selection.
Fig. AP03 — extrusion or injection line producing flame-retardant plastic partsConnects recommendation to real processing conditions.Use this matrix to shortlist flame retardant additives for polymers before sample testing. It covers common application searches such as flame retardant additives for polypropylene, flame retardant additives for PVC and PC flame retardant systems.
| Polymer | Recommended Direction | Halogen-Free | Halogenated | Typical Targets | Processing Notes | Best Next Page |
|---|---|---|---|---|---|---|
| PP / Polypropylene | Phosphorus-nitrogen additives or PP carrier masterbatch | Common | Available | UL94 V-2 / V-0 · LOI 26–32 | Check dispersion, drip control, smoke and mechanical retention | PVC guide |
| PE / Polyethylene | Mineral, halogen-free or PE carrier masterbatch systems | Common | Available | UL94 HB / V-2 · LOI 24–30 | Often linked to cable, pipe or film requirements | ABS guide |
| PVC | Low-smoke, synergist or application-specific systems | On request | Common | LOI 30–38 · low smoke | Confirm flexible/rigid PVC, plasticizer and smoke target | Additives |
| PC / PC-ABS | PC flame retardant or PC/ABS engineering plastic systems | Preferred for many specs | On request | UL94 V-0 @ 1.5 mm · heat resistance | Confirm heat resistance, color, transparency and UL94 thickness | PC guide |
| PA / Nylon | Phosphorus, nitrogen or reinforced compound systems | Available | Available | UL94 V-0 · GWFI 960 °C | Confirm glass fiber, processing temperature and GWFI target | Additives |
| ABS | Brominated or custom halogen-free direction | On request | Common | UL94 V-0 / HB | Balance impact, color and injection molding stability | Masterbatch |
| LSZH Cable Compounds | Low-smoke halogen-free mineral / compounded systems | Core direction | Not typical | IEC 60332 · low smoke zero halogen | Confirm cable standard, smoke density and mechanical needs | LSZH guide |
The best product form depends on whether the buyer is a compounder, molder, extruder, cable compound producer or resin modifier. This section gives the page a real decision-making role instead of simply listing products.
You need maximum formulation control, flexible active ingredient adjustment or integration into an existing compounding recipe.
You need cleaner dosing, easier handling, better pre-dispersion and direct let-down on extrusion or injection molding lines.
Halogen-free flame retardant plastics are often requested for electrical, electronics, cable, enclosed-space and export compliance applications. Halogenated systems may still be considered when efficiency, cost or legacy specifications are the main priorities.
Common for PC, PC/ABS, PA, LSZH cable compounds and applications where RoHS, REACH, low-smoke or customer restricted substance lists matter.
Best treated as an application-specific project because smoke density, mechanical properties and cable standards affect the complete formulation.
May support efficient flame retardant performance in selected ABS, PVC or cost-sensitive applications, subject to compliance confirmation.
Most projects need a balance of flame rating, smoke, color, impact strength, heat resistance, processing stability and total cost.
This page should convert visitors into useful RFQs. These details let the technical team recommend the correct additive system, carrier resin, sample direction and testing path.
Fig. AP04 — UL94 vertical burn test with labeled plastic plaquesSupports technical credibility for flame rating claims.
Fig. AP05 — application samples: cable jacket, enclosure, molded part and sheetShows real end-use scenarios instead of decorative imagery.Direct answers help engineers and procurement teams compare polymer applications, additives, masterbatch, halogen-free systems and RFQ requirements before sample testing.
Flame retardant additives can be selected for PP, PE, PVC, PC, PC/ABS, PA, ABS, PU and LSZH cable compounds, but each polymer needs a different chemistry, loading level and processing check.
Powder additives are suitable for compounders that need formulation control, while flame retardant masterbatch is usually better for cleaner dosing, pre-dispersion and direct use in extrusion or injection molding.
Many PC and PC/ABS flame retardant applications use halogen-free systems, but final selection depends on UL94 thickness, heat resistance, color, transparency and mechanical property targets.
Share the polymer resin, processing method, target flame rating, part thickness, halogen-free or halogenated requirement, smoke target, color, mechanical property needs and expected trial volume.
POM is the hardest of the common engineering plastics, because the oxygen sits inside the polymer backbone where no additive can intercept it. Polyolefins are easy chemically but drip badly, so they need anti-drip help. Rigid PVC is the easiest — it self-extinguishes on its own chlorine, and the real work there is smoke suppression.
Some loss is unavoidable, and how much depends on the route. A 15-25% brominated or phosphorus package costs modest elongation and impact. A mineral system at 55-65% is a different story and needs surface treatment and coupling agents to stay usable. Anyone quoting zero property loss at high loading is overselling.
The resin decides most of this before anything else does. A polyolefin needs high loading and anti-drip help, PVC barely burns and the work is smoke and antimony, engineering plastics need chemistry that survives their processing temperature. So the useful first question is not which flame retardant is best but which ones your resin will tolerate at the wall thickness you actually mould. Send the resin grade, the standard you must meet and your process, and we will narrow it to two options with honest trade-offs.
Send your polymer, processing method, target standard and application requirements. We will recommend whether to start with additives, masterbatch, halogen-free systems or halogenated systems.