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The material selection platform
Polymer Additives
The material selection platform
Polymer Additives
Selecting Flame Retardants for Plastics

Market Applications of Flame Retardants

Flame retardancy is one of the key traits to be present in polymers for their use in multiple applications. As some polymers are not inherently flame retardant, there is a need for addition of additives that can help them retard fire. Discover the exact flame retardant type that will be compatibile with the polymer of your interest.

Overview

Key Applications

Applicable Polymers Description Commercial Grades
High Impact Polystyrene (HIPS)
  • Brominated FRs are the most cost-efficient materials used for imparting flame retardancy to HIPS. Phosphorous FRs are best suited for PPO-HIPS blends.
  • HIPS is used in many applications due to its excellent balance of properties and low cost. Electrical/electronics and appliances are the two most important segments requiring flame retardancy in applications where the temperature does not exceed 80 °C.
FR grades for HIPS
Polyolefin (PO)
  • Polyethylene, EVA — Wiring and cables (low and medium voltage) cable jacketing, automotive, building, and construction. ATH and MDH are the solutions of choice for demanding fire-resistant applications.
  • Polypropylene — PP stands out at the edge between commodity and engineering plastics. They are commonly used in power cables, connectors, public facilities seats (stadium), fitting enclosures, and PP fibers (carpets, seats). MDH is the solution for demanding applications.
  • TPO — The main application areas include roofing membranes, interior automotive applications, flexible cables, and shrinkable film.

Note: Brominated FRs are the most cost-efficient materials for imparting flame retardancy in PE and PP.


Polyamide (PA)
  • Selecting the right brominated FR for connectors is essential. MDH flame retardant allows processors to produce flame retarded PA without halogen- or phosphorous-containing compounds.
  • PA applications requiring flame retardancy are components and enclosures for electrical and electronic applications.
FR grades for PA
Polybutylene Terephthalate (PBT)
  • Selecting the right brominated FR for connectors is important to meet material specifications and processability (thin wall) with the lowest cost possible.
FR grades for PBT
Acrylonitrile Butadiene Styrene (ABS)
  • The best brominated FR for ABS depends strongly on the requirements of the final application. Phosphorus FRs are best suited for PC-ABS blends.
  • Acrylonitrile contributes chemical resistance and heat stability; butadiene delivers toughness and impact strength; and the styrene component provides ABS with rigidity and processability.
FR grades for ABS
Polyurethane Foams
  • To achieve the desired level of performance, reactive brominated FRs are recommended. The selection of the right phosphorus FR has a major impact on the final performance.
  • Rigid PU foams requiring flame retardancy are essentially used for insulation in building and construction (roofing, wall sheeting), and refrigeration.
FR grades for PU foams
Polyvinylchloride (PVC)
  • MDH or ATH can be added as FRs to achieve desired properties.
  • PVC belongs to the group of less flammable plastics, however, plasticizer addition leads to a dramatic increase in flammability and smoke density.
FR grades for PVC
Natural and Synthetic Rubbers
  • Flame retardancy of cross-linked elastomers using MDH or ATH has been state-of-the-art for many years.
  • Typical applications include seals, gaskets, conveyor belts, cables, profiles, foams, or protective coverings.



Rigid PU foams requiring flame retardancy are essentially used for insulation in building and construction
HIPS is used in housing appliances because of its excellent balance of properties and low cost
Flame retardants are used in wire and cable applications

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6 Comments on "Flame Retardants for Fire Proof Plastics"
Richard B Feb 15, 2024
Very useful & detailed information, thank-you. Rich Brown, Bemis Associates, Inc, Shirley, MA
Pradeep Kumar N Jan 24, 2024
Extensive information. Thanks
Leo V Jun 8, 2023
Thank you for a nice overview, all the required information in one comprehensive overview!
TANER K Nov 26, 2022
Very beneficial to understand fr
PANKAJ V Aug 3, 2022
Excellent information - very useful
Alireza D Jun 23, 2021
hi dear thanks for nice information i am glad if you could help us during producing of PP-compound consuming in wire and cable insulation usable in automotive industrial , we need to achieve the flame retardancy properties V-2 so please aware me what kind of flame retardant could i use in my compound. please kindly note my compound is include PP+SEBS and some additive like metal deactivator and antioxidant . looking forward to hearing from you

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