Custom Flame Retardant for Polyamide

Flame Retardant for Polyamide

-- Steady & Reliable Manufacturer --

Introduction

Polyamides such as PA6 and PA66 burn readily, yet they are used in electrical, electronic, automotive, and appliance parts that must meet strict fire standards. Flame retardants for polyamide are additives compounded into the resin to slow ignition, limit flame spread, and help molded parts reach UL 94, glow wire, and related ratings.

No single additive suits every polyamide. Unreinforced grades respond well to melamine cyanurate (MCA), while glass fiber reinforced grades generally need phosphorus based systems such as metal phosphinates, often paired with nitrogen synergists. We help customers match the chemistry to the base resin, fiber content, wall thickness, and color requirements instead of offering a one-size-fits-all product.

Halogen-free systems are now the main focus in this market, driven by RoHS-oriented design rules, low-smoke requirements, and the electrification of vehicles and appliances.

Specification

Parameter Typical Value
Appearance White to off-white powder
Chemistry Options Melamine cyanurate (MCA), metal phosphinate, melamine polyphosphate (synergist)
Suitable Resins PA6, PA66, PA46, PA12, and polyamide blends (grade dependent)
Phosphorus Content (phosphinate grades) Approximately 23 to 24%
Nitrogen Content (MCA grades) 48.5 to 49.5%
Particle Size (D50) 2 to 50 microns depending on grade
Thermal Decomposition Onset Above 320°C for most grades
Packaging 25kg kraft bags with PE liner, 25kg woven bags, or 500kg / 1000kg jumbo bags

Exact specifications depend on the product code. Technical data sheets and a certificate of analysis are available for each grade on request.

Application

Flame-retardant polyamide compounds are used wherever heat, electricity, and fire safety requirements overlap.

  • Electrical and electronic components: Connectors, switches, bobbins, relay bodies, and circuit protection housings.
  • Automotive and EV parts: Charging connectors, battery module components, and under-bonnet electrical parts.
  • Household appliances: Housings, fan parts, and internal structural components in appliances and power tools.
  • Industrial equipment: Terminal blocks, motor parts, and control gear enclosures.
  • Cable accessories: Cable ties, conduit fittings, and clamps.

Advantages

  • Matched to the resin: Different chemistries for unfilled and glass-filled polyamide, instead of a single compromise product.
  • Halogen-free options: Supports low-smoke, non-corrosive fire behavior and compliance with halogen-free specifications.
  • Property retention: Particle size and purity are controlled to protect mechanical strength, flow, and surface finish.
  • Color flexibility: Light-colored additives allow natural, white, and colored compounds, unlike red phosphorus systems.
  • Technical support: Formulation advice from first trial through scale-up.

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Manufacturing Facility in XUSEN

We have our own production workshops and warehouses, equipped with complete production and quality inspection equipment.
As China Flame Retardant for Polyamide Suppliers and Flame Retardant for Polyamide Factory., With over 20 years in developing halogen-free flame-retardant products positions us as industry leaders in providing domestic flame-retardant solutions.
All our products comply with the stringent requirements of the WEEE, ROHS, and EUP directives.

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Synthetic Technology

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Composite Flame Retardant Technology

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Surface Treatment Technology

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Manufacturing Technology of Masterbatch

Zhejiang Xusen Flame Retardants Incorporated Company

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Composite Materials Field

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Fireproof coatings field

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