HPP Fire Retardant Plastics: Fire Resistance without Additives

HPP and Fireproofing: Safety Built Into the Material

High-Performance Flame Retardant (HPP) polymers ensure system safety without the need for halogenated additives, which are often toxic or unstable. Thanks to their inherently fire-resistant chemical structure, they protect people, property and critical equipment.

The limits of conventional plastics in the face of fire

  • Rapid ignition
  • Release of toxic fumes
  • Mechanical properties lost in seconds
  • Need for time-unstable retardant additives

HPPs, on the other hand, offer intrinsic flame retardancy, without compromising thermal resistance or mechanical strength.
 

Flame-retardant HPP polymers - Sélection DEMGY

Product

 

UL94 Class

 

Temperature Continuous (°C)

 

Key properties

 

PEEK (Victrex® 450G, KT820)

 

V-0 to 1.45 mm

 

250°C

 

Self-extinguishing, stable aromatic structure

 

PPS (Ryton® R4)

 

V-0 to 0.8 mm

 

220°C

 

Flame-retardant sulfur structure

 

PI (Vespel® SCP-5000)

 

V-0 to 0.5 mm

 

320°C

 

Flame-retardant up to 550°C

 

Torlon® 4203

 

V-0

 

260°C

 

Low smoke emission, high rigidity

 

FEP (Teflon®)

 

V-0

 

200°C

 

Inert, low gas emission

 
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Advantages of additive-free flame-retardant HPPs

✅ Natural self-extinguishing
✅ No migration or degradation of additives
✅ RoHS / REACH / UL94 compliant
✅ Thermal and mechanical stability even in the event of fire
✅ Low density, no heavy mineral fillers
 

Critical fire safety applications

Aerospace & aeronautics

  • Engine insulation, cable sheaths, housings
  • Vespel® SCP-5000: flame resistance to 550°C

Automotive & electrical

  • High-voltage connectors, under-hood components
  • PPS Ryton® R4: light weight + fire safety

Electronics & connectors

  • Power enclosures, SMD brackets
  • PEEK: UL94 V-0 without halogenated additives

Medical and instrumentation

  • Sterilizable materials without toxic fumes
  • Torlon®: low outgassing in sterile environments
     

DEMGY: certified solutions for fire-sensitive environments

Material expertise

  • Selection of UL94 V-0 grades validated by our teams
  • Advice on critical thickness and assemblies

Safe processing

  • Machining of components exposed to flame
  • Injection molding of flame-retardant electrical or fluidic parts

Control & compliance

  • Fire tests (UL94), smoke emissions, post-ignition mechanical resistance
  • Material files compliant with aeronautics, medical and electronics standards
     

Conclusion

Flame-retardant high-performance polymers enable you to design safe, lightweight, high-performance systems without regulatory compromise. Thanks to their natural self-extinguishing properties, they are an ideal replacement for standard plastics with toxic retardants.

Associated products