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Fiber reinforcement material based on liquid metal and preparation method thereof

A fiber skeleton and liquid metal technology, applied in the field of fiber skeleton materials, can solve the problems of poor mechanical properties of pure liquid metal, and achieve the effect of good electrical conductivity and improved mechanical properties

Inactive Publication Date: 2018-05-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Liquid metal has the advantages of good electrical conductivity and thermal conductivity, but the mechanical properties of pure liquid metal are not good.

Method used

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  • Fiber reinforcement material based on liquid metal and preparation method thereof
  • Fiber reinforcement material based on liquid metal and preparation method thereof

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Effect test

Embodiment 1

[0028] The fiber skeleton material based on liquid metal uses carbon fiber as the fiber skeleton, and gallium indium 24.5 alloy as the filling material. The diameter of the carbon fiber is 0.5mm, and it is woven into a plane hexagonal structure by electrospinning technology, and the unilateral length of the hexagonal hole is 1mm. The volume ratio of carbon fiber to liquid metal is about 1:20.

Embodiment 2

[0030] The fiber skeleton material based on liquid metal uses copper wire as the fiber skeleton, and gallium indium 24.5 alloy as the filling material. The diameter of the copper fiber is 0.1mm, and it is woven into a three-dimensional tetrahedron structure by metal additive manufacturing technology, and the side length of the tetrahedron with voids is 0.5mm. The volume ratio of copper wire fiber to liquid metal is about 1:15.

Embodiment 3

[0032] The fiber skeleton material based on liquid metal adopts nylon fiber and iron wire material as the composite fiber skeleton, the nylon fiber is in the radial direction, the iron wire is in the weft direction, and gallium indium tin alloy is used as the filling material. Among them, the diameter of nylon fiber is 0.5mm, and the diameter of iron wire is 0.2mm. It is woven into a quadrilateral structure by electrospinning technology, and the side length of the hole is 1mm. The volume ratio of fiber skeleton to liquid metal is about 1:20.

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Abstract

The invention discloses a fiber reinforcement material based on liquid metal. The fiber reinforcement material based on the liquid metal comprises a fiber reinforcement and the liquid metal, wherein the fiber reinforcement mainly plays a supporting role, and the external load is dispersed to all positions along the trend of fibers; the liquid metal fills the fiber reinforcement and plays a supplementary supporting role, the rigidity adjustment can be realized along with the change of the existence state, when the temperature is lower than the melting point of the liquid metal, the liquid metalexists in a solid state, and the rigidity of the material is the highest; and with the increase of temperature, the liquid metal gradually changes from the solid state to a liquid state, the rigidityof the material is gradually decreased, and the rigidity of the material is decreased to the minimum when the liquid metal completely exists in the liquid state. The invention further provides a preparation method for the fiber reinforcement material. The fiber reinforcement material and the preparation method thereof have the advantages that the rigidity of the obtained material can change continuously along with the change of the external temperature, the fiber reinforcement material is a good material with controllable rigidity and can be applied to various fields such as flexible robots and exoskeletons.

Description

technical field [0001] The invention belongs to the technical field of fiber skeleton materials, in particular to a liquid metal-based fiber skeleton material and a preparation method thereof. Background technique [0002] Fiber skeleton materials generally refer to a series of composite materials that use fibers as the internal skeleton and are filled with flexible substances on the outside. The network skeleton formed by the internal fibers can disperse the force on the material everywhere, and has high toughness, high strength and load-carrying properties. Good strength and other advantages, it has important applications in the fields of rubber products such as tires, tapes and hoses. In addition, different raw materials for constructing the fiber skeleton will have very different mechanical properties along different directions of the skeleton, which provides a simple idea for manufacturing anisotropic materials. [0003] Liquid metal has the advantages of good electric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/02C22C47/00
CPCC22C49/02C22C47/00
Inventor 袁博刘静
Owner TSINGHUA UNIV
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