Flame Retardants, Rubber

XJ-85M Halogen Free Rubber Flame Retardant Masterbatch

XJ-85M is a high-efficiency halogen-free flame retardant masterbatch designed for rubber and thermoplastic elastomer systems. It combines red phosphorus with synergists and stabilisers through melt-blending to form clean, dust-free pellets. XJ-85M provides strong flame-retardant performance at competitive addition levels while improving processing safety, dispersion uniformity and long-term thermal stability. It eliminates the ignition hazards, dusting problems and handling challenges associated with powder red phosphorus, making it suitable for a wide range of elastomeric and rubber-PP composite applications.

Attributes

Key Features and Benefits

≥80 percent flame-retardant content for high FR efficiency in rubber systems.
Dust-free pellets improve workplace hygiene and reduce explosion risk.
Strong red-phosphorus synergy enables competitive formulation cost.
Excellent dispersion in kneaders, internal mixers and extruders.
Stable during mastication, extrusion, calendering and molding.
Halogen-free with low smoke and low toxicity combustion profile.
Versatile use across EPDM, SBR, NR, NBR, CR, IIR, TPE, TPV and PP blends.
Safe handling and consistent dosing due to controlled pellet architecture.

Specifications

Technical Highlights

Appearance: Black masterbatch pellets.
Flame retardant content: ≥80 percent.
Moisture: ≤0.5 percent.
Physical form: Non-dusting pellets.
Thermal stability: Suitable for rubber processing temperature ranges.
Compatibility: EPDM, NR, SBR, NBR, CR, IIR, TPE, TPV, PP and rubber–PP composites.
Recommended addition levels:
EPDM / SBR / NR: 10–25 percent
Cable rubber compounds: 12–20 percent
Industrial rubber sheets / belts: 15–25 percent
PP or PP–rubber blends: 8–15 percent

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Industries
Cable & wire: insulation, jacketing, plugs, gaskets
Automotive: EPDM/SBR seals, hoses, bellows, vibration-control parts
Industrial rubber: conveyor belts, sheets, anti-static mats, profiles
Construction: waterproofing membranes, sealing strips
Consumer goods: molded flame-retardant elastomer components
Polymer compounding: PP formulations requiring red phosphorus synergy
Compatible Rubber & Polymer Systems
EPDM
NR
SBR
NBR
CR
IIR
TPE & TPV
PP and PP–rubber composites