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A kind of shape memory composite material and its preparation method and application

A composite material and memory technology, applied in the field of conductive and flexible shape memory polymer composite materials and their preparation, can solve the problems of limiting the application of shape memory polymer composite materials, inability to flexibly change shape, and easy peeling of fillers from substrates, etc. Achieve the effect of thickness adjustability, excellent surface tension, good flexibility characteristics

Active Publication Date: 2019-03-05
云南迈特力医疗技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the commonly used metal fillers are gold, silver, copper, etc., which have high hardness at room temperature and cannot be flexibly changed in shape.
At the same time, due to the low deformation recovery rate of carbonaceous fillers and metal fillers, when the shape memory polymer composite material undergoes large deformation, the filler is easy to peel off from the matrix, which greatly limits the application of shape memory polymer composite materials.

Method used

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  • A kind of shape memory composite material and its preparation method and application
  • A kind of shape memory composite material and its preparation method and application
  • A kind of shape memory composite material and its preparation method and application

Examples

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Embodiment 1

[0030] A shape memory composite material such as figure 1 As shown, it is composed of liquid metal layers and shape memory polymer material layers alternately; wherein, 1 is the shape memory polymer material polybutylene terephthalate; 2 is liquid metal gallium. The layer thicknesses of the liquid metal layer and the shape-memory polymer material layer are 10 μm respectively, the former (referring to the liquid metal layer, the same below) has 9 layers, and the latter (referring to the shape-memory polymer material layer, the same below) layer The number is 10 layers.

Embodiment 2

[0032] A shape memory composite material such as figure 1 As shown, it is composed of liquid metal layers and shape memory polymer material layers alternately; among them, 1 is the shape memory polymer material polyethylene p-ethylene glycol; 2 is the liquid metal gallium indium alloy, wherein the content of gallium is the mass The fraction is 90%, and the rest is indium; the layer thicknesses of the liquid metal layer and the shape memory polymer material layer are respectively 10 μm, the number of layers of the former is 3 layers, and the number of layers of the latter is 4 layers.

Embodiment 3

[0034] A shape memory composite material such as figure 1 As shown, it is composed of liquid metal layers and shape memory polymer material layers alternately; among them, 1 is the shape memory polymer material polyetherimide; 2 is the liquid metal gallium indium alloy, wherein the content of gallium is the mass fraction 70%, and the rest is indium; the layer thicknesses of the liquid metal layer and the shape memory polymer material layer are 10 μm respectively, the number of layers of the former is 5 layers, and the number of layers of the latter is 6 layers.

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Abstract

The invention relates to shape memory composite material and a preparation method and application thereof. The composite material is prepared by alternately compositing liquid metal layers and shape memory polymer material layers. The preparation method includes: using a layering compositing method, evenly spraying liquid metal on a shape memory polymer material layer to form a liquid metal layer, coating another shape memory polymer material layer on the liquid metal layer, and repeating the steps until the required thickness is reached. The conductive flexible shape memory polymer composite material has the advantages that the material is excellent in conductivity and flexible, and the thickness of the material can be changed according to needs. The preparation method is simple, fast, efficient and controllable, extremely high in flexibility and promising in application prospect.

Description

technical field [0001] The invention relates to a multifunctional polymer composite material, in particular to a conductive flexible shape memory polymer composite material mainly composed of liquid metal and a shape memory polymer, and a preparation method and application thereof. Background technique [0002] Shape memory polymers, also known as shape memory polymers (Shape Memory Polymers, referred to as SMP), refer to products with an initial shape that change their initial conditions and fix them under certain conditions, and then pass external conditions (such as heat, electricity, light, etc.) A polymer material that can restore its original shape to the stimulation of chemical induction, etc. At present, shape memory polymer materials have received extensive attention and research in the field of smart materials. Compared with shape memory alloys, shape memory polymers, as a new type of functional polymer material, have the advantages of light weight, large recovera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/06C09D167/02C09D179/08C09D133/10B05C5/00B05C11/10B05C11/02
CPCB05C5/00B05C11/02B05C11/10C08J7/06C08J2333/10C08J2367/02C08J2379/08C09D133/10C09D167/02C09D179/08
Inventor 路金蓉刘静
Owner 云南迈特力医疗技术有限公司