Design and manufacture method of a honeycomb sandwich structure ventilation channel

Abstract

The invention discloses a method for designing and manufacturing a honeycomb sandwich structure ventilating channel, which belongs to the technical field of composite materials. The method for designing and manufacturing the air passage of the honeycomb sandwich structure includes the following steps: preparing a honeycomb sandwich structure mould; laying the cut prepreg cloth on the honeycomb sandwich structure mould, pre-embedding silicone rubber ropes in the frame laying; The mold is vacuumed and pre-cured, and the silicone rubber rope is pulled out from the frame; the adhesive film and aluminum honeycomb are laid on the honeycomb sandwich structure mold; the outer skin is laid on the aluminum honeycomb and the frame; holes are drilled on the outer skin and Clean the edge gap of the honeycomb sandwich structure mold, vacuum the honeycomb sandwich structure mold; heat and pressurize the honeycomb sandwich structure mold to vacuumize and solidify, and extract the gas in the honeycomb sandwich structure mold. The method for designing and manufacturing the air-permeable channel of the honeycomb sandwich structure of the present invention finally smoothly extracts the gas in the honeycomb to achieve structural stability.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a method for designing and manufacturing a honeycomb sandwich structure ventilation channel Background technique [0002] In aerospace, its light specific gravity, high strength, and high stiffness composite material structure is used in aerospace vehicles to play the role of heat protection, load bearing and weight reduction. The original phenolic ablation resin-based structural parts mainly play the role of heat protection and weight reduction, but have no bearing effect. [0003] The honeycomb sandwich structure is a new type of phenolic ablation resin-based structure. It is made by laying a large-area aluminum honeycomb sandwich in the production of the original phenolic resin-based structural parts and curing together to form an organic whole to achieve heat resistance and weight reduction. and bearing role. [0004] The phenolic resin releases a large amount o...

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Problems solved by technology

[0005] The invention provides a method for designing and manufacturing a honeycomb sandwich structure ventilating channel, which solves or partially solves the technical problems in the prior art that the small molecular gas enters the aluminum honeycomb sandwich, causing debonding of the honeycomb sandwich and the FRP skin, and structural damage.

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