Powder, liquid and compounded flame retardant additives for polymer modification, cable compounds, extrusion, injection molding and custom formulation support. These flame retardant polymer additives — also searched as fire retardant additives — are selected by resin, flame rating, smoke target and processing method.
Fig. A01 — additive form + lab controlUse a real image of flame retardant powder on a stainless tray with sieve analysis, lab tools or QC setup. The image should prove additive form, particle control and technical formulation handling.
Flame retardant polymer additives and additive flame retardants are selected not only by chemistry, but also by form, dosing method, dispersion requirements and the buyer's compounding process.
For compounders that need direct formulation control, flexible active ingredient adjustment and integration with in-house mixing or extrusion recipes.
For selected polymer, coating, PU or process-specific applications where liquid dosing is preferred and compatibility must be confirmed.
For buyers that need balanced flame performance, dispersion, smoke control and processing stability without building every component from zero.
Fig. A02 — white flame retardant powder additive on stainless trayAdditive form, particle control and lab handling before formulation.
Fig. A03 — blending and compounding lineIn-house formulation and compounding capability.Different materials need different flame retardant chemistry. The right system depends on flame rating, smoke performance, processing temperature, cost and regulatory requirements.
For low-smoke, RoHS/REACH-oriented and engineering plastic applications where halogen content must be avoided.
For applications where high flame retardant efficiency and cost control are important, subject to regulatory confirmation.
For selected plastics requiring halogen-free performance, char formation and a balance of flame rating and mechanical properties.
For low-smoke and high-loading applications where mechanical properties and processing stability must be managed carefully.
Starting points for screening, not specifications. Loading and processing limits move with resin grade, wall thickness and the flame rating you have to reach — confirm at your own thickness before committing to a trial.
| System | Typical Loading | Processing Window | Where It Fits | Main Trade-Off |
|---|---|---|---|---|
| Mineral — ATH / MDH | 55–65% | ATH from ~200 °C · MDH to ~330 °C | LSZH cable, PE, EVA, low-smoke parts | High loading costs elongation and melt flow |
| Phosphorus — APP, phosphinate | 15–25% | Resin-specific; check grade temperature limit | PP, PA, PBT, intumescent systems | Chemistry is resin-specific, not universal |
| Nitrogen — MCA, MPP | 10–20% | Suited to engineering-resin processing | Unfilled PA; P-N synergist | Can promote dripping; weak in glass-filled grades |
| Brominated + antimony | Low–moderate; Br:Sb about 3:1 | Wide | ABS, HIPS, PP, PBT | Halogen restrictions and antimony price swings |
Use this table as a first filter before sample testing for flame retardant additives for polymers. Final selection should be confirmed by resin grade, processing method, target standard and end-use requirements.
| Polymer | Typical Additive Direction | Halogen-Free | Halogenated | Typical Targets | Processing Notes | Related Page |
|---|---|---|---|---|---|---|
| PP / Polypropylene | Phosphorus-nitrogen or compounded systems | Common | Available | UL94 V-2 / V-0 · LOI 26–32 | Check dispersion, smoke and mechanical retention | PP application |
| PE / Polyethylene | Mineral, halogen-free or cable compound systems | Common | Available | UL94 HB / V-2 · LOI 24–30 | Often linked to cable, pipe or film requirements | PE application |
| PVC | Low-smoke, synergist or application-specific systems | On request | Common | LOI 30–38 · low smoke | Confirm flexible/rigid PVC, plasticizer and smoke target | PVC application |
| PC / PC-ABS | Engineering plastic flame retardants | Preferred for many specs | On request | UL94 V-0 @ 1.5 mm · heat resistance | Confirm heat resistance, color, transparency and UL94 thickness | PC / PC-ABS |
| PA / Nylon | Phosphorus, nitrogen or reinforced compound systems | Available | Available | UL94 V-0 · GWFI 960 °C | Confirm glass fiber, processing temperature and GWFI target | PA / Nylon |
| ABS | Brominated or custom halogen-free direction | On request | Common | UL94 V-0 / HB | Balance impact, color and injection molding stability | ABS application |
| 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 compounds |
Additives and masterbatch solve the same problem in different ways. Use the guide below to choose the form that fits your process, equipment and handling needs.
You need maximum formulation control, direct compounding, flexible active ingredient adjustment or integration with an existing recipe.
You need cleaner dosing, easier handling, better pre-dispersion and direct let-down on extrusion or injection molding lines.
A useful recommendation requires more than a product name. These factors determine whether a flame retardant additive can meet flame, processing, compliance and cost targets.
We work directly with the factories that produce these additives: custom formulation, sample testing, powder and compounded blend supply, batch production at the partner factory, quality control and export packaging. See our flame retardant manufacturer sourcing page for how production, OEM and RFQ are handled. If you would rather skip the compounding step entirely, we also supply ready-to-mould flame retardant compound grades — FR-PP, FR-ABS, FR-PA6, FR-PC and FR-PBT pellets at UL94 V-0.
Fig. A04 — QC lab, UL94 vertical burn and LOI testingFlame rating and oxygen index validation.
Fig. A05 — export bags, drums and palletized goodsBatch production, packaging and worldwide B2B supply.Chemistry decides whether the formulation works. Supply decides whether it still works on the fifth container. These questions apply to us as much as to anyone you are comparing us against.
| The Worry | How to Actually Test It |
|---|---|
| Factory or trading company? | Ask for the batch record on a lot number you already hold. A trader cannot produce records for material it did not make — this single question settles it faster than any certificate. |
| Will production match the sample? | Ask whether the sample was line-produced or lab-made, and on which lot. Then write incoming checks into the contract — ash content for loading drift, LOI for dispersion drift. |
| Why is that other quote cheaper? | Usually active content, particle size or surface treatment. Normalise every quote to price per kilo of active and request the particle size distribution. Rankings often reverse. |
| What does switching really cost? | Not the price gap — re-qualification. Burn testing at your thickness, a line trial, sometimes re-certification. Price that before negotiating per kilo. |
Our side of it. Our partner factory compounds on its SHJ-75 twin-screw line with UL94 and LOI screening we arrange, so samples come off the equipment that will run your order. batch traceability from the ISO 9001 certified factories we source from; third-party reports through an accredited third-party laboratory. Ask for trial quantity and production MOQ together. What we will not do is promise a drop-in match for another producer’s grade without a trial — identical chemical names still differ in particle size and active content, and that difference lands in your dispersion, not in the quotation. And if you need a commodity grade in tonnage tomorrow on price alone, a distributor holding local stock will beat us; we earn our place where the formulation has to be developed and held consistent for years.
Direct answers help engineers and procurement teams decide whether to request additive samples, masterbatch samples or a custom formulation discussion.
In plastics, yes — the two terms are used interchangeably. “Flame retardant” is the usual word in polymer and cable specifications; “fire retardant” is more common for coatings, textiles and building products. The chemistry is the same. Where the wording actually matters is covered in flame retardant vs fire retardant.
Flame retardant additives are powder, liquid or compounded ingredients added to plastics and polymers to reduce flammability and help reach flame rating, smoke or compliance targets.
Selection depends on base resin, processing temperature, target flame rating, smoke requirement, halogen-free or halogenated requirement, color, mechanical performance and cost target.
No. PP, PE, PVC, PC, PC/ABS, PA, ABS, PU and LSZH cable compounds have different processing temperatures, smoke requirements and mechanical property needs.
Share base resin, processing method, target standard, halogen-free or halogenated requirement, color, mechanical performance, trial quantity and any compliance requirements.
Trial quantities and production orders are different conversations. We supply sample quantities against a signed specification sheet so you can run a real trial on your own line, and production MOQ depends on whether the grade is standard or a custom package. Ask for both figures in the same enquiry.
Usually yes, provided you share the current TDS and the property targets you have to hold. What we will not do is claim a drop-in match without a trial — particle size, surface treatment and active content differ between producers even when the chemical name is identical, and those differences show up in dispersion and mechanicals.
Buying flame retardant additives rather than masterbatch or compound only makes sense if you control your own compounding. If you do, the cost per kilo of active is the lowest of the three routes and you keep full formulation control — which is why cable and engineering-plastic compounders buy this way. Tell us the resin, the target standard at your real wall thickness, and whether halogen is permitted, and we will propose a system with a starting loading rather than a product list. Samples ship against a signed spec sheet.
Send your resin type, processing method, target flame rating and compliance requirements. We will recommend a suitable additive direction or sample option for testing.