A method for preparing a carbon fiber unmanned aerial vehicle frame

By employing a specific plasma treatment and epoxy resin-modified carbon fiber UAV frame fabrication method, the problems of insufficient interfacial bonding strength and unreasonable layup design have been solved, resulting in a high-performance, lightweight, and reliable carbon fiber UAV frame suitable for the high stability and long endurance of multi-rotor UAVs.

CN122143376APending Publication Date: 2026-06-05YOULINSHENG (ORIENTAL) NEW MATERIAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YOULINSHENG (ORIENTAL) NEW MATERIAL TECHNOLOGY CO LTD
Filing Date
2026-05-08
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing carbon fiber drone frames have shortcomings such as insufficient interfacial bonding strength, unreasonable layup design, imprecise curing process, and poor connection reliability, which affect the stability, lifespan, and performance consistency of the frame.

Method used

Carbon fiber fabric is treated with plasma in a specific atmosphere, combined with modified epoxy resin and nano-alumina particle toughening agent, and the layup sequence and connection structure are designed and optimized. Through step-by-step temperature curing process and co-curing connection, a high-performance carbon fiber drone frame is formed.

Benefits of technology

It significantly improves the interfacial bonding strength between carbon fiber and resin, optimizes the mechanical properties and weight reduction of the frame, enhances the structural integrity and performance consistency of the frame, and is suitable for stable flight of UAVs.

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Abstract

The application discloses a preparation method of a carbon fiber unmanned aerial vehicle frame, selects high-strength carbon fiber fabric as a reinforcing material, and performs plasma treatment on the carbon fiber fabric, a treatment atmosphere is a mixed gas of argon and nitrogen, and the volume ratio of the argon to the nitrogen is 3:1; by adopting the plasma treatment of the specific atmosphere and power, active groups and micro fine rough structures are effectively introduced on the surface of the carbon fiber without damaging the strength of the carbon fiber body, and the chemical bonding and mechanical anchoring effect of the carbon fiber and the resin are significantly enhanced. Meanwhile, bisphenol A type and phenolic type epoxy resins are compounded in an epoxy resin matrix, and nano aluminum oxide particles are added, and synergistic toughening is achieved. The phenolic epoxy resin improves the crosslinking density and heat resistance, and the nano particles can initiate a silver wire and a passivated crack tip, so that the impact toughness and damage tolerance of the composite material are greatly improved, and the frame is not prone to brittle cracking when slight collision or impact is borne.
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