High intensity lightweight honeycomb core and production method thereof

Abstract

The invention relates to a honeycomb core with high strength and light weight, which comprises a honeycomb core body which is formed by assembling a plurality of boards. The boards are provided with a plurality of eyelets to ensure that the whole honeycomb core is in a single-track ventilation passage with the outside world and the high-temperature gas in the honeycomb core can be discharged from the eyelets, thus reducing the pressure bored by the honeycomb core and preventing the appearing of arch bar and being not easily affected with damp. Different from the existing technology in the manufacturing method of the honeycomb core with high strength and light weight, after gluing, the steps of drying and pricking are added, and alloy aluminium plate is pressed for 2 hours under the temperature of 183 DEG C to 187 DEG C; the strength of the alloy aluminium tape is 31.8 N / cm, which meets the tensile strength when using in aviation, high-speed trains and wind-power blades and has major surplus.

Description

technical field [0001] The invention relates to a high-strength lightweight honeycomb core and a manufacturing method thereof, in particular to a honeycomb core used in high-speed trains, aerospace and wind power blades and a manufacturing method thereof. Background technique [0002] At present, honeycomb sandwich panels are widely used in building materials for their excellent sound insulation and thermal insulation properties. The honeycomb core is usually arranged between the upper and lower plies of the honeycomb core board. A single honeycomb itself does not have sound insulation and heat insulation performance, but the honeycomb sandwich structure has good sound insulation and heat insulation performance. In the aluminum honeycomb core of the commonly used honeycomb sandwich panel, the volume of the solid material is only 1% to 3%, and the rest of the space is air in a closed state. Because the sound insulation and heat insulation performance of air is better than a...

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Problems solved by technology

However, since the honeycomb core has no small holes for ventilation on the board, the glue between the boards is prone to vaporization in high-temperature environments such as the sun, so that the bonding force of the honeycomb core is not strong, and the honeycomb core cannot be discharged in time. The high-temperature gas inside, under the pressure of high-pressure gas, easily causes the honeycomb core and the upper and lower layers to arch, making the surface of the honeycomb sandwich panel uneven, and has the disadvantage of being susceptible to moisture, which limits its application in high-speed trains, aerospace and wind power. Applications in high-end technical fields such as blades

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