# Red Phosphorus Flame Retardant Nylon PA6/PA66 | UL94 V-0 & High CTI | RenJie Plastics

> Source: https://www.rjplastics.com/en/article/productsred-phosphorus-flame-retardant-nylon-pa6-pa66

## Knowledge of Modified Plastics

[Home](/en/)›[Support](/en/support/thermally-knowledge)›[Knowledge of Modified Plastics](/en/support/modified-knowledge)›**Red Phosphorus Flame Retardant Nylon PA6/PA66 | UL94 V-0 & High CTI**

      Support

      - Knowledge of Thermally Conductive Plastics
- Knowledge of Conductive Plastics
- Knowledge of Modified Plastics

      Need help choosing?

        [Get a quote](/en/contact)

## Red Phosphorus Flame Retardant Nylon PA6/PA66 | UL94 V-0 & High CTI

    **

## Red Phosphorus Flame Retardant Nylon Series: The Engineering Philosophy of High-Efficiency Flame Retardancy and Performance Balance

**Introduction**Red phosphorus flame retardants hold a core position in halogen-free systems due to their exceptional efficiency. By utilizing advanced **micro-encapsulation technology**, we have stabilized red phosphorus, completely eliminating risks of moisture absorption and toxicity during processing. This ensures perfect compatibility and uniform dispersion within the **Nylon (PA6/PA66) matrix**.

**How It Works: Dual-Phase Flame Retardancy**This highly efficient mechanism relies on a synergistic effect in both solid and gas phases:

- Solid Phase: At high temperatures, red phosphorus converts into strong dehydrating agents (e.g., polyphosphoric acid), promoting the formation of a dense char layer on the polymer surface to insulate heat and oxygen.
- Gas Phase: It captures free radicals, interrupting the combustion chain reaction.
- This allows the material to easily achieve the UL94 V-0 (0.8mm) rating with ultra-low additive levels, while maintaining the Nylon's superior mechanical and electrical properties.

### Core Advantages of Our Red Phosphorus Series

- High-Efficiency Halogen-Free: Achieves V-0 rating with minimal loading, ensuring compliance with strict environmental regulations.
- Superior Electrical Properties: Minimal impact on the Comparative Tracking Index (CTI), maintaining high insulation performance.
- Color Stability: Advanced stabilization ensures consistent color quality during processing.
- Mechanical Retention: Compared to other flame retardant systems, it better preserves the matrix's toughness, strength, and flowability.

##### Customizable Solutions for PA6 & PA66

Performance can be precisely tuned by adjusting the red phosphorus ratio and base resin (PA6/PA66). We offer various flow rates and reinforcement grades to meet your comprehensive requirements for part structure and safety.

- Exceptional Flame Retardancy: Achieves stable UL94 V-0 certification at thin wall thicknesses of 0.8mm to 1.6mm with low additive loading.
- Outstanding Electrical Insulation: High CTI levels of 400V-600V, classifying it as a premium high-insulation material.
- Excellent Glow Wire Performance: Glow Wire Ignition Temperature (GWIT) ≥ 850°C, passing the GWFI 960°C test to meet stringent safety standards.
- Balanced Mechanical Properties: Delivers high-efficiency flame retardancy while retaining Nylon's excellent impact strength and processing flowability.

### Question not answered here?

Send us the grade and application, our engineers will advise.

  *Your name***Company Email***Phone / WhatsApp Country Product of interest Quantity Target price Application  Message Send inquiry*
  We only use your details to reply to this inquiry. We never share them.

### Need a quotation or product data?

      Send us your specification and we will come back with a solution within 24 hours.

    [Get a quote](/en/contact)
      [tjh@rjplastics.com](mailto:tjh@rjplastics.com)