Flame Retardant

What Is a Flame Retardant

TFlame Retardant is a functional additive formulated by synthesizing phosphorus, halogen, or nitrogen-based compounds and incorporating them into the polyol blend. Upon exposure to heat, it functions by interrupting the combustion cycle—either by scavenging high-energy radicals (H· and OH·) in the gas phase or by promoting the formation of an insulating char layer (solid phase) that acts as a thermal barrier between the fire source and the polyurethane matrix

MXFR-V6

MXFR-V6 (CAS 38051-10-4) is a high-performance chlorinated diphosphate flame retardant offering exceptional phosphorus-chlorine synergy and low volatility for automotive and

MXFR-TEP

MXFR-TEP (CAS 78-40-0) is a high-efficiency halogen-free phosphate flame retardant with ultra-low viscosity and 17% phosphorus content designed for superior

MXFR-TCPP

MXFR-TCPP (CAS 13674-84-5) is a high-performance chlorinated phosphate ester flame retardant featuring exceptional thermal and hydrolysis stability, low viscosity, and

Organophosphorus & Halogenated Composition

Ming Xu flame retardants are primarily composed of phosphate esters and chlorinated hydrocarbons. The molecular design focuses on balancing the Phosphorus content (for solid-phase charring) and Halogen content (for gas-phase radical scavenging). Our formulation strategy prioritizes low viscosity and high compatibility with standard polyether/polyester polyols, ensuring the additive remains stable in the pre-mix without phase separation or hydrolysis over time.

Radical Scavenging & Char Formation

Upon thermal decomposition, Ming Xu flame retardants function through a dual-action mechanism. In the gas phase, the halogenated components release radicals that trap high-energy H· and OH· propagators, effectively interrupting the combustion chain reaction. Simultaneously, in the solid phase, the phosphorus compounds promote dehydration and carbonization of the polyol backbone, forming an insulating intumescent char layer that acts as a physical barrier against heat and oxygen.

Scorch Resistance & Physical Property Retention

A critical challenge with conventional flame retardants is the “scorching” effect caused by the exothermic heat of the reaction. Ming Xu’s low-acidity series includes acid scavengers to neutralize impurities, significantly reducing the risk of core discoloration in flexible slabstock foam. Furthermore, our additives are engineered to minimize the plasticizing effect, maintaining the foam’s original load-bearing capacity (ILD/IFD) and tensile strength while meeting strict standards like UL-94, MVSS 302, and BS 5852 (Crib 5).