Flame retardant masterbatch
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Detailed Description
Why does Plastic Need a Flame-retardant Masterbatch?
High different batch stable
Good fire retardant effect
High cost performance
High dispersion
In modern days, plastic products are everywhere - from mobile phone shells to car seats, from packaging to building materials, the convenience of plastic is self-evident. However, its flammable characteristics also bring great safety hazards. According to statistics, the global loss caused by plastic fires exceeds 20 billion US dollars every year, and flame retardant additives for polymers as the core material of plastic modification, FR masterbatch is one of the useful way to reduce the burning speed of plastic by more than 90% by adding trace amounts of flame-retardant ingredients, which has become a key role in ensuring the safety of life and property.
1) Chemical inhibition — stopping the burning reaction
Burning is basically a chain reaction with free radicals.
Some flame-retardants (brominated or phosphorous ones) catch these radicals so the fire can't continue.
Simple idea:
They "steal" the active particles needed for burning → fire becomes weak.
2) Creating a barrier layer — char or intumescent foam
Some systems swell, foam, or carbonize when heated, forming a shield on the plastic surface.
This blocks:
heat
oxygen
flammable gas
Imagine it as a built-in fire-protection coating.
Main types:
Intumescent (phosphorus-nitrogen), APP / PER / MEL.
3) Diluting combustible gas — heat absorption
Mineral systems like Mg(OH)₂ or Al(OH)₃ release water vapor and absorb heat when decomposing.
Effects:
cools the material
dilutes fuel gases
forms oxide protection layer
It's like dumping cold water and steam into the fire.
4) Surface protection — solid mineral layer
Some minerals create a dense surface layer that blocks oxygen.
Usually used together with other FR systems.
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