A flame retardant nylon composite material and its preparation method and application

By adding acidic carbon black with a pH less than 7 to the nylon material, the problem of the decrease in flame retardant stability after adding toner is solved, and the maintenance of V-2 flame retardant grade and the improvement of flame retardant stability in the UL94 standard is achieved.

CN114085518BActive Publication Date: 2025-03-25KINGFA SCI & TECH CO LTD
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Patent Information

Application Number
CN202111258598.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-10-27
Publication Date
2025-03-25
Estimated Expiration
2041-10-27

AI Technical Summary

Technical Problem

After adding toner, the flame retardant stability of existing nylon materials decreases and cannot reach the V-2 flame retardant grade in the UL94 standard. Melamine cyanurate as a flame retardant will affect the processing stability of the material.

Method used

By adding acidic carbon black with a pH less than 7 to the nylon resin, a small amount (0.1-5%) is added to the nylon resin to achieve the V-2 flame retardant grade and improve the flame retardant stability.

Benefits of technology

The nylon material maintains the V-2 flame retardant grade under 70℃168H conditions, improves the flame retardant stability, and avoids the appearance and performance problems introduced by melamine cyanurate.

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Abstract

The present invention relates to a flame retardant nylon composite material and a preparation method and application thereof. The flame retardant nylon composite material comprises nylon resin, an antioxidant, a lubricant, carbon black, etc. The flame retardant nylon composite material provided by the present invention has a V-2 flame retardant grade (UL94 standard, 0.4 mm) and good flame retardant stability through the addition of a small amount of carbon black with a specific pH, and can be widely used in electronic and electrical products, such as switch parts and connectors.
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