China Plastics ›› 2025, Vol. 39 ›› Issue (11): 47-52.DOI: 10.19491/j.issn.1001-9278.2025.11.008

• Materials and Properties • Previous Articles     Next Articles

Preparation and properties of halogen⁃free flame⁃retardant and antistatic polyamide 66 composites

YANG Sen1,2()   

  1. 1.Chongqing Copolyforce New Materials Co,Ltd,Chongqing 401332,China
    2.Chongqing Research Institute Co,Ltd of China Coal Technology & Engineering Group Corporation,Chongqing 400039,China
  • Received:2024-12-06 Online:2025-11-26 Published:2025-11-21

Abstract:

Glass fiber⁃ and carbon fiber⁃reinforced antistatic polyamide 66 (PA66) composites were prepared via melt blending. Halogen⁃free flame⁃retardant antistatic PA66 composites were subsequently fabricated by incorporating aluminum diethylphosphinate (ADP) and melamine polyphosphate (MPP) into the antistatic matrix. The mechanical, electrical, and flame⁃retardant properties of the composites were systematically characterized. Results indicated that the tensile strength, flexural strength, flexural modulus, and impact strength increased with higher carbon fiber content. A composite containing 10 wt% carbon fiber and 20 wt% glass fiber exhibited favorable economic efficiency and antistatic performance. MPP was found to synergize with ADP, substantially reducing the required ADP content. With the addition of 13 wt% ADP and 2 wt% MPP, the flame⁃retardant composites achieved a UL⁃94 V⁃0 rating at thicknesses of 3.2 mm, 1.6 mm, and 0.8 mm, along with a limiting oxygen index of 34 %.

Key words: polyamide 66, glass fiber, carbon fiber, antistatic, halogen free flame retardant

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