Preparation method of composite material for manufacturing impact-resistant components of unmanned aerial vehicles

Abstract

The invention discloses a preparation method of a composite material for manufacturing impact-resistant components of unmanned aerial vehicles. The composite material for manufacturing the impact-resistant components of the unmanned aerial vehicles is an epoxy resin composite material, and the specific preparation method comprises the following steps: firstly, uniformly mixing and stirring epoxy resin and liquid polysulfide rubber in weight ratio of 100:(5-15) to obtain toughened epoxy resin; and then adding the toughened epoxy resin as a matrix and carbon fiber reinforcement proportionally into an extruding machine and performing extrusion granulating to obtain the epoxy resin composite material. The liquid polysulfide rubber used as a toughening agent of the epoxy resin has good molecular flexibility and low solubility in the epoxy resin, and forms relatively more island phases, thereby inducing smaller influence on mechanical properties of the epoxy resin; and therefore, under an impact, a liquid polysulfide rubber toughened epoxy resin adhesive exhibits higher impact strength, and is suitable for manufacturing the impact-resistant components of the unmanned aerial vehicles.

Description

technical field [0001] The invention relates to the field of drone manufacturing, in particular to a method for preparing composite materials used to manufacture impact-resistant components of drones. Background technique [0002] At present, most of the small fixed-wing UAVs adopt the composite UAV parachute recovery structure. This recovery method has the following characteristics: 1. The operation is simple, no runway is required, and there is no special requirement for ground conditions. 2. Wide application range and high cost performance; 3. Small size, low cost and reusable; 4. No need for complex and expensive automatic navigation and landing systems. Composite UAV parachute recovery structures are mostly equipped with landing gear, and additional guard plates are installed at the bottom. Although this structure can effectively protect the airframe structure and increase the rigidity and strength of the airframe, the added landing gear and guards will have a certain ...

AI Technical Summary

Problems solved by technology

Although this structure can effectively protect the airframe structure and increase the rigidity and strength of the airframe, the added landing gear and guards will have a certain impact on the aerodynamic shape of the aircraft. While increasing the resistance of the aircraft, it also increases the weight of the airframe to a certain extent. The payload of the aircraft is reduced, and due to the increase of the connecting structure, it also has a certain impact on the reliability of the aircraft

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