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Foaming Materials Flame Retardant Solutions

We have an excellent technical team, which can be designed according to customers requirements.

We deploy advanced formulation expertise to solve the critical challenge: balancing flame safety with cellular integrity. In insulation panels, protective packaging, and lightweight automotive components, foams must resist ignition while maintaining essential properties like density, compression set, and thermal stability. YINSU delivers precision-engineered solutions for polyurethane (PU), polystyrene (PS), polyethylene (PE), and specialty foams that meet stringent UL94 HF-1, FMVSS 302, and EN 13501-1 standards without compromising structural performance.


Critical Performance Safeguards

Foamed materials demand specialized FR approaches to address:

  • Cell structure preservation – Preventing collapse during FR incorporation

  • Smoke density control – Critical for enclosed spaces (building cavities, vehicle interiors)

  • Thermal stability – Maintaining integrity at service temperatures (-40°C to +150°C)

  • Hydrolysis resistance – For humid environments (HVAC, refrigeration systems)


Your Partner in Cellular Safety

From construction insulation and EV battery padding to aerospace acoustic panels and protective packaging – YINSU tailors solutions that protect both product integrity and end-users. We engineer flame retardancy that moves with your material.


Material TypeKey ApplicationsTypical FR TypeYINSU Solution & Item No.
Flexible PU Foam
(Slabstock, Molded)		Mattresses,
Automotive seating,
Furniture cushions		• Red phosphorus
• Organic phosphorus		RP-TP46, RP-CO, YS-F22B
Rigid PU/PIR FoamBuilding insulation,
Refrigeration panels,
Pipe insulation
• Red phosphorus
• Organic phosphorus
• MCA		RP-TP46, RP-CO, YS-F22B, MCA-B, WADP-10
Polystyrene Foam
(EPS/XPS)		Insulated containers,
Structural panels,
Geofoam		• Bromine FR
• Red phosphorus		YS-8X, FRP-950X
Polyethylene Foam
(Crosslinked/Non-XL)		Protective packaging,
Sports equipment,
Buoyancy aids		• Halogen masterbatch
• Red phosphorus		PE-XT-141, PEFP-482
FRP-950X
Silicone FoamAerospace seals,
EMI gaskets,
Medical padding		• Red phosphorusXJ-A2, YS-F22B, FR-03

Custom foam formulations?
Consult YINSU for application-specific FR integration!

Foaming

  • The “Have Your Cake And Eat It Too” of Foam Materials: How To Achieve Damping, Flame Retardancy, And Strength All at Once?
    High-density polyurethane foam faces the “impossible triangle” of damping, flame retardancy, and strength. Yinsu Flame Retardant employs a dual-technology approach—“intrinsic flame retardancy (molecular incorporation of phosphorus-containing monomers) + surface armor (polysiloxane flame-retardant layer)”—to simultaneously enhance all three performance metrics, thereby avoiding the mechanical property degradation associated with traditional additive-based flame retardants. The LEFP series of microcellular foam materials is already in mass production and is being used in applications such as automotive shims and railroad sleeper pads.   Read More>
  • Limitations And Process Adaptation of Red Phosphorus in Class B1 PU Rigid Foam Formulations
    For Class B1 rigid foam insulation boards, adding 10–14 parts of red phosphorus flame retardant can reduce the FIGRA value to below 100 W/s while maintaining a closed-cell rate of over 87%. Compared to aluminum hydroxide-based systems, this results in annual savings of approximately $20,000 to $30,000 in flame retardant costs. Silver-coated red phosphorus is available in both powder and paste forms, making it suitable for both manual and continuous production lines.   Read More>
  • EPS Vs. XPS: Key Differences in Production, Performance, And Applications
    Discover the critical engineering and cost differences between EPS and XPS insulation boards to ensure correct material specification on your next building construction project. By implementing advanced Halogen-free Flame Retardancy and modern YINSU Flame Retardancy technologies, polymer manufacturers can easily upgrade both organic materials to strict Class B1 safety ratings without compromising core thermal or compressive performance.   Read More>
  • Ultimate Solution for Flame-Retardant EPS: Balancing Fire Safety, Thermal Insulation, And Moisture Resistance
    Discover how the building insulation industry is overcoming the critical trade-off between strict fire safety compliance and thermal efficiency in XPS and EPS insulation boards. By leveraging cutting-edge advancements in Halogen-free Flame Retardancy, YINSU Flame Retardancy solutions now enable manufacturers to achieve superior UL94 V-0 and B1 fire ratings without sacrificing mechanical performance or moisture resistance.   Read More>
  • XPS Insulation Board Flame Retardant Solution: Low-Cost, Halogen-Free, V-0 Grade, Breaking The Environmental And Performance Dilemma
    XPS insulation board flame retardancy faces dual pressure from environmental bans and costs. Yinsu Flame Retardant provides high-efficiency brominated and halogen-free flame retardant solutions. With an addition of only 4-8%, they can pass UL94 V-0 and building material B1 grade tests. Yinsu Flame Retardant is specially developed for XPS/EPS insulation boards, reducing overall costs by 20-30% and helping enterprises achieve compliance and cost reduction.   Read More>
  • Polyurethane Rigid Foam Insulation Material Flame Retardant Technology
    This article details the primary methods and technologies for enhancing the flame retardancy of rigid polyurethane foam insulation materials, including additive and reactive flame retardants. It covers various flame retardant systems and their effects, highlighting the significance of improving flame retardancy in rigid polyurethane foam insulation materials.   Read More>
  • Fire Safety Performance of Typical Silica-Based Flame-Retardant Rigid Polyurethane Foam
    This article explores the use of tetraethyl orthosilicate (TEOS) as a flame retardant in rigid polyurethane foam (RPUF) to enhance its fire safety performance. Through various tests, it demonstrates that TEOS effectively improves the fire safety of RPUF by reducing the heat release rate, smoke release rate, and promoting the formation of a protective char layer.   Read More>
  • When Foaming Material Meets New Energy Vehicles, Do You Know All These Applications?
    This article delves into the multifaceted applications of foam materials in the new energy vehicle sector, including power battery heat dissipation and protection, NVH (Noise, Vibration, and Harshness) performance enhancement, and lightweight vehicle design. It highlights how foam materials, with their lightweight, flame-retardant, sound-absorbing, and shock-absorbing properties, are driving the development of new energy vehicles.   Read More>
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Yinsu flame retardant is a factory, focuses on manufacturing non halogen, low smoke and non-toxic flame retardants for various of applications. 
We also supply tailor flame retardant solutions.
 
Office: No. 26, Kaitai Road, Huangpu District, Guangzhou City, Guangdong Province, China

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