Flame Retardants & Fire Protection
Expandable graphite for fire protection
Expandable graphite acts as an intumescent additive. When heated, it expands into a carbon layer that can help limit heat transfer. Grade selection must suit the material system and its processing temperature.
Intumescent action
Expansion creates a protective carbon structure.
Thermal barrier
The expanded layer can help reduce heat transfer.
Formulation flexibility
Consider use in foams, polymers, coatings and seals.
Where graphite is used
Identify the process first, then review the role of graphite and the requirements that guide selection.
Foams & insulation
ROLE OF GRAPHITEExpandable graphite in selected insulation formulations.
SELECTION FOCUSProcessing temperature · expansion behaviour
Polymer & rubber compounds
ROLE OF GRAPHITEIntumescent additive in formulated polymer systems.
SELECTION FOCUSParticle size · matrix compatibility · loading
Coatings & fire seals
ROLE OF GRAPHITEExpansion-based protection in coatings and sealing systems.
SELECTION FOCUSOnset temperature · expansion · end-use test
Expansion behaviour matters
Select for both processing and fire exposure.
The onset of expansion needs to be considered against the processing window. Expansion results also depend on the test conditions; compare grades using the same method.
Start with the right graphite
Discuss the material family together with your specification and operating conditions.
| Material family | Application starting point | What to confirm |
|---|---|---|
| Expandable graphite | APPLICATION STARTING POINTIntumescent additive for evaluated fire-protection systems | WHAT TO CONFIRMOnset, expansion volume, particle size and test method |
Before you select a grade
Practical questions to help make your requirements clear.
Can regular flake graphite replace expandable graphite?
Regular flake graphite does not provide the same engineered expansion behaviour. Select the material according to the intended function.
Does the additive alone determine the fire rating?
Fire performance depends on the finished formulation, product construction and applicable test. The graphite grade alone does not establish a rating.
Which data should I include in an inquiry?
Share the matrix, processing temperature, target expansion onset and volume, particle size and finished-product test requirements.
Natural graphite portfolio
Flake, micronized and other graphite-based product families.
Specification discussion
Share particle size, purity and application requirements.
Sales & after-sales support
Discuss product selection and follow-up needs.
Let’s discuss your graphite requirements.
Send your application, target specification and required quantity to start a focused product discussion.