Preparation method of lattice structure metamaterial based on liquid metal

A technology of lattice structure and liquid metal, applied in metal processing equipment, devices for coating liquid on the surface, manufacturing tools, etc., can solve limited problems, achieve wide application scenarios, rapid response and recovery of heat transfer performance, The effect of high specific energy absorption

Pending Publication Date: 2022-04-01
重庆交通大学绿色航空技术研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research and reports on the controllable combination of multifunctional polymers and metals, and the realization of multifunctionality through metamaterial structures such as lattice structures are still relatively limited.

Method used

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  • Preparation method of lattice structure metamaterial based on liquid metal
  • Preparation method of lattice structure metamaterial based on liquid metal
  • Preparation method of lattice structure metamaterial based on liquid metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of the liquid metal-based lattice structure metamaterial of this embodiment includes the following steps:

[0033] S1, using waxy photosensitive resin to light-cure the lattice unit and combine it with DLP additive manufacturing process for 3D printing to obtain a waxy lattice unit model:

[0034] (1) Select the basic unit form of the lattice structure:

[0035] The lattice structure includes two types of lattices: truss and curved surface. Commonly used truss structures include Octet, BCC, FCC, etc., and curved surface lattice structures include Diamond, Primitive, etc. By evaluating the mechanical failure mode of connection points such as trusses and curved surfaces after loading, it can be judged whether it can be used to prepare liquid metal lattice structure metamaterials. If the main failure mode is tensile or fracture deformation, it is not suitable for the preparation of this preparation method. The present invention illustrates the prep...

Embodiment 2

[0048] The preparation method of the liquid metal-based lattice structure metamaterial of this embodiment includes the following steps:

[0049] S1, using waxy photosensitive resin to light-cure the lattice unit and combine it with DLP additive manufacturing process for 3D printing to obtain a waxy lattice unit model:

[0050] (1) Select the basic unit form of the lattice structure:

[0051] The lattice structure includes two types of lattices: truss and curved surface. Commonly used truss structures include Octet, BCC, FCC, etc., and curved surface lattice structures include Diamond, Primitive, etc. By evaluating the mechanical failure mode of connection points such as trusses and curved surfaces after loading, it can be judged whether it can be used to prepare liquid metal lattice structure metamaterials. If the main failure mode is tensile or fracture deformation, it is not suitable for the preparation of this preparation method. The present invention illustrates the prep...

Embodiment 3

[0064] The preparation method of the liquid metal-based lattice structure metamaterial of this embodiment includes the following steps:

[0065] S1, using waxy photosensitive resin to light-cure the lattice unit and combine it with DLP additive manufacturing process for 3D printing to obtain a waxy lattice unit model:

[0066] (1) Select the basic unit form of the lattice structure:

[0067] The lattice structure includes two types of lattices: truss and curved surface. Commonly used truss structures include Octet, BCC, FCC, etc., and curved surface lattice structures include Diamond, Primitive, etc. By evaluating the mechanical failure mode of connection points such as trusses and curved surfaces after loading, it can be judged whether it can be used to prepare liquid metal lattice structure metamaterials. If the main failure mode is tensile or fracture deformation, it is not suitable for the preparation of this preparation method. The present invention illustrates the prep...

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Abstract

The invention discloses a preparation method of a lattice structure metamaterial based on liquid metal. The preparation method comprises the following steps: carrying out light curing molding on lattice units by adopting waxy photosensitive resin, and carrying out 3D printing by combining with a DLP additive manufacturing process to obtain a waxy lattice unit model; the wax lattice unit model is covered with gypsum mortar and a cylindrical high-temperature-resistant shell and placed at the normal temperature till gypsum is hardened; heating the product in a high-temperature heating furnace until the wax lattice unit model is completely vaporized and an internal porous runner is formed; liquid metal is poured into the wax lattice unit model until the porous runner is fully filled, and a metal lattice structure core is obtained; a super-elastic silica gel shell is formed in an immersion coating mode; carrying out curing treatment on the Falz metal lattice structure subjected to film coating; the prepared lattice structure metamaterial based on the liquid metal can achieve the shape memory function of external force and temperature regulation and control, and due to the external elastic layer, the function of recovery after repeated strain bearing can be achieved.

Description

technical field [0001] The invention relates to the field of novel multifunctional materials, in particular to a method for preparing liquid metal-based lattice structure metamaterials. Background technique [0002] Multifunctional lattice structure metamaterials have complex and diverse functions and uses other than the traditional force-bearing and load-bearing functions, and due to their structural complexity, they usually need to be prepared by additive manufacturing methods. The lattice structure is a periodic structure composed of a large number of repeated trusses or curved lattice units. The mechanical properties of the structure itself are mainly determined by the macroscopic structural shape and the shape of the lattice units in it. Based on the current research, most of them focus on learning the mechanical properties and lightweight functions of the lattice structure itself, and optimize its mechanical properties by designing the unit parameters such as the size ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C7/02B22C9/24B05D7/14B05D3/04B05D1/18B33Y10/00B33Y80/00
Inventor 邓方行杨大祥王强成莹李玉福张鑫杨文元
Owner 重庆交通大学绿色航空技术研究院
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