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A kind of high-performance thermoplastic composite pyramid-shaped and x-shaped lattice sandwich panel and its preparation method

A composite material and composite material layer technology are applied in the field of high-performance thermoplastic resin matrix composite pyramid-shaped and X-shaped lattice sandwich panels and their preparation, which can solve the problem of low inelastic buckling resistance, and difficulty in integral molding and connection of cores. It can solve the problems of poor performance and other problems, and achieve the effect of easy storage, good structural and dimensional stability, and good water resistance

Active Publication Date: 2019-06-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problems that the existing resin-based composite material cores have complex preparation process, defects are easily introduced during the core preparation process, the production efficiency is low, and the cores are difficult to form as a whole. The joint effectively solves the problem of low inelastic buckling resistance of the existing resin-based composite lattice sandwich structure in compression and shear deformation
In addition, the use of thermoplastic composite material welding technology solves the problems of difficult connection of traditional composite material structures and poor performance of joints

Method used

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  • A kind of high-performance thermoplastic composite pyramid-shaped and x-shaped lattice sandwich panel and its preparation method
  • A kind of high-performance thermoplastic composite pyramid-shaped and x-shaped lattice sandwich panel and its preparation method
  • A kind of high-performance thermoplastic composite pyramid-shaped and x-shaped lattice sandwich panel and its preparation method

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specific Embodiment approach 1

[0041] Specific implementation mode one: combine Figures 1 to 10 Describe this embodiment, a kind of high-performance thermoplastic composite pyramid lattice sandwich panel of this embodiment, it comprises pyramid lattice core 1, composite material upper panel 3 and composite material lower panel 4;

[0042] Described pyramidal lattice core 1 is made up of a plurality of pyramidal lattice structure unit cells 5; -3 composed of one piece with a pyramid shape;

[0043] The lower end rod 5-2 and the upper end rod 5-1 are parallel to each other, and the upper end rod 5-1 and the lower end rod 5-2 are connected by a diagonal rod 5-3 to form a trapezoidal integral piece, wherein each lower end One end of the rod 5-2 is respectively connected to one end of the two oblique rods 5-3, and the other ends of the two oblique rods 5-3 are respectively connected to the two ends of the upper end rod 5-1;

[0044] The upper surfaces of the upper end rods 5-1 of all the pyramidal lattice str...

specific Embodiment approach 2

[0045] Specific implementation mode two: combination Figures 1 to 10 Describe this embodiment, the difference between this embodiment and the specific embodiment is: the lower panel 4 of the thermoplastic composite material is connected to the lower end rods 5-2 in the plurality of pyramidal lattice structure unit cells 5, and the adjacent The lower end rods 5-2 of the two pyramid-shaped lattice structure unit cells 5 are connected to the lower panel 4 of the same thermoplastic composite material. Other compositions and connection methods are the same as those in Embodiment 1.

specific Embodiment approach 3

[0046] Specific implementation mode three: combination Figures 1 to 10 Describe this embodiment, the first difference between this embodiment and the specific embodiment is: the connection between the surface of the upper end rod 5-1 of the pyramid-shaped lattice structure unit cell 5 and the upper panel 3 of thermoplastic composite material and the connection between the two lower end rods 5 The surface of -2 is connected to the lower panel 4 of the thermoplastic composite material, both of which are connected by thermoplastic composite material welding technology. Other compositions and connection methods are the same as those in Embodiment 1.

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Abstract

The invention discloses a high-performance thermoplastic composite pyramid-shaped and X-shaped lattice coreboard and a preparation method thereof, and relates to a lattice coreboard and a preparation method thereof. The problems that existing resin-based composite cores are complex in preparation process, defects are liable to occur in the core preparation process, the preparation efficiency is low, and cores cannot be integrally formed easily are solved, and meanwhile, the problem that existing resin-based composite lattice sandwich structures are low in inelastic buckling resistance during compression and shear deformation is effectively solved through two-dimensional joints formed by staggered rods in an X-shaped lattice structure. The preparation method comprises the following steps that firstly, a thermoplastic composite laminate is prepared; secondly, a periodically-arranged rhombus-structure thermoplastic composite laminate net is prepared; thirdly, the laminate net is put into a tunnel type infrared-ray oven; fourthly, pyramid lattice cores and X-shaped lattice cores are prepared through a stamping die; and fifthly, the high-performance thermoplastic composite pyramid-shaped and X-shaped lattice coreboard is prepared.

Description

technical field [0001] The invention relates to a high-performance thermoplastic resin-based composite pyramid-shaped and X-shaped lattice sandwich panel and a preparation method thereof. Background technique [0002] Due to its light weight, high strength and multi-functional advantages, the lattice sandwich structure of composite materials has not only been studied by researchers from various countries but also used in many fields (such as aerospace, ships, and automobiles) since it was proposed. broadly used. Traditional composite sandwich structures usually use thermosetting resin-based composite materials. However, thermosetting composites have certain disadvantages, such as poor toughness, poor environmental adaptability, long curing cycle, and difficulty in recycling. In addition, when the thermosetting resin-based composite material lattice sandwich structure is formed, the problem of the combination of the core and the inner and outer skins has not yet been solved...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/34B26D3/10B29C51/46B29C51/02B29C51/30B29C65/08B32B3/12B32B27/02B32B27/12B32B37/06B32B37/10B32B38/04
CPCB26D3/10B29C51/02B29C51/30B29C51/46B29C65/08B29C70/34B32B3/12B32B5/02B32B5/26B32B27/12B32B37/06B32B37/10B32B38/04B32B2038/045B32B2307/558
Inventor 王兵胡记强吴林志王世勋马力
Owner HARBIN INST OF TECH