Method for designing and manufacturing ventilation channel of honeycomb sandwich structure

Abstract

The invention discloses a method for designing and manufacturing a ventilation channel of a honeycomb sandwich structure, and belongs to the technical field of composite materials. The method for designing and manufacturing the ventilation channel of the honeycomb sandwich structure includes the following steps of preparing a honeycomb sandwich structure mold; laying cut pre-immersed cloth on the honeycomb sandwich structure mold in an attached manner, and embedding a silicon rubber rope in a laid and attached part of a frame; carrying out vacuumized procuring on the honeycomb sandwich structure mold, and pulling the silicon rubber rope out of the frame; laying a rubber film and an aluminum honeycomb on the honeycomb sandwich structure mold; laying outer skin on the aluminum honeycomb and the frame; drilling holes in the outer skin, clearing edge gaps of the honeycomb sandwich structure mold, and carrying out vacuum packaging on the honeycomb sandwich structure mold; and carrying out heating, pressurizing and vacuumizing curing on the honeycomb sandwich structure mold, and pumping out gas in the honeycomb sandwich structure mold. By means of the method for designing and manufacturing the ventilation channel of the honeycomb sandwich structure, the gas in the honeycomb is finally and smoothly pumped out, and the structural stability is achieved.

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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