High-compression-resistance three-dimensional hollow composite floor and manufacturing method thereof

Abstract

The invention discloses a high-compression-resistance three-dimensional hollow composite floor and a manufacturing method thereof and aims at solving the technical problems that in the prior art which is mentioned in the background technology, a three-dimensional hollow composite floor is low in compressive strength, compression resistance of a composite material is improved to a certain extent by increasing the pile warp density only through structural design of a three-dimensional hollow fabric, but the preparation process of the hollow fabric can be caused difficult by pile warp densification, the pile warp densification range is limited, and the requirements are still hard to satisfy. According to the technical scheme, the high-compression-resistance three-dimensional hollow composite floor comprises a three-dimensional hollow fabric constituting the overall frame of the three-dimensional hollow composite floor and one or more intermediate reinforcing ribs which are arranged in gaps in a pile warp structural layer of the three-dimensional hollow fabric. The high-compression-resistance three-dimensional hollow composite floor has the advantages that the special structure of the floor integrates mechanical performance, in particular to compressive strength, of traditional solid glass fiber reinforced plastic and that of carbon steel, and the weight reduction effect is achieved for a three-dimensional composite board, foam and a honeycomb sandwich composite material.

Description

technical field [0001] The invention relates to a 3D hollow composite floor and a manufacturing method thereof, in particular to the field of 3D hollow composite floors, in particular to a high-pressure-resistant 3D hollow composite floor and a manufacturing method thereof. Background technique [0002] With the global advocacy of energy saving, emission reduction and low-carbon economy, lightweight high-strength flooring has become the current development trend of flooring. With the development of modern technology, the floor structure has been gradually replaced by light-weight and high-strength sandwich flooring from the previous aluminum alloy floor. The sandwich floor mainly includes foam sandwich floor, honeycomb sandwich floor and 3D hollow composite floor. [0003] Patent CN2887694 invented a maglev vehicle compartment composite floor with foam sandwich structure; patent CN102080439A and CN102695602A designed and developed a composite floor with honeycomb sandwich st...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the pile structure and pile density of hollow fabrics, the compressive strength of hollow composite materials is relatively low. For example, the compressive strength of ordinary 15mm hollow composite materials is only 2.5MPa, and the compressive strength of 18mm hollow composite materials It is only 1.8MPa, and the compressive strength of the 20mm hollow composite material is only 1.2MPa, and the compressive strength of the hollow composite material decreases with the increase of the fabric height

Usually helicopter floors, rail transit floors, etc. require compressive strength ≥ 3MPa, and ordinary hollow composite panels are difficult to meet their high compressive requirements

At present, the method of velvet densification is usually used to improve the overall compression resistance of the 3D hollow composite floor, but the densification of the velvet will bring great difficulties to the preparation process of the hollow fabric, which greatly increases the preparation cost of the 3D hollow composite floor, and The density of velvet is limited, and it is still difficult to meet the requirements of high-performance flooring for 3D hollow composite materials

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