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Electric response shape memory composite material and preparation method thereof

A composite material and electrical response technology, applied in the field of electrical response shape memory composite materials and their preparation, can solve the problems of destroying the mechanical properties of composite materials, limiting the application of SMP, and the influence of shape memory effect, etc., achieving simple preparation method and improving shape memory. Response rate, repeatable effect

Active Publication Date: 2021-06-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the general SMP stimulation method is directly regulated by temperature, this limits the application of SMP in special environments, and it is necessary to develop other methods to drive the shape memory effect, such as through electricity, light, magnetism, pH and other driving methods.
For the method of electric shape memory polymer, it is usually to add conductive filler to the shape memory polymer material and use the pyroelectric effect to drive indirectly, but this will not only easily destroy the mechanical properties of the composite material, but also have a certain degree of shape memory effect. influences

Method used

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  • Electric response shape memory composite material and preparation method thereof
  • Electric response shape memory composite material and preparation method thereof

Examples

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Embodiment 1

[0032] A method for preparing an electrically responsive shape memory composite material, comprising the steps of:

[0033] (1) Take 100 ul of silver nanowire dispersion with a concentration of 0.5 mg / ml and apply it to the surface of the substrate, after drying, put it into an oven at 100° C. for annealing for 10 minutes to form a silver nanowire conductive film;

[0034] (2) Weigh 2 g of poly-L-lactic acid, poly-d-lactic acid and polycaprolactone particles with a mass ratio of 35:35:30 in a beaker, take 50 ml of chloroform as a solvent to dissolve PLLA, PDLA, and PCL particles, Stir at room temperature until uniform;

[0035] (3) Place the substrate with the silver nanowire conductive film in a flat dish, take 20ml of poly-L-lactic acid, poly-D-lactic acid and polycaprolactone blend solution and apply it evenly to the surface of the silver nanowire, and dry it at room temperature After the film is formed, it is placed in an oven at 160° C. for annealing for 10 minutes. Afte...

Embodiment 2

[0038] A method for preparing an electrically responsive shape memory composite material, comprising the steps of:

[0039] (1) Take 100 ul of silver nanowire dispersion with a concentration of 1 mg / ml and apply it to the surface of the substrate. After drying, put it in an oven at 100° C. for annealing for 10 minutes to form a silver nanowire conductive film;

[0040] (2) Weigh 2 g of poly-L-lactic acid, poly-d-lactic acid and polycaprolactone particles with a mass ratio of 35:35:30 in a beaker, take 50 ml of chloroform as a solvent to dissolve PLLA, PDLA, and PCL particles, Stir at room temperature until uniform;

[0041] (3) Place the substrate with silver nanowire conductive film in a flat dish, take 20ml poly-L-lactic acid, poly-D-lactic acid and polycaprolactone blend solution and apply it evenly to the surface of silver nanowire, dry at room temperature After the film is formed, it is placed in an oven at 160° C. for annealing for 10 minutes. After annealing, it is coo...

Embodiment 3

[0044] A method for preparing an electrically responsive shape memory composite material, comprising the steps of:

[0045] (1) Take 100 ul of silver nanowire dispersion with a concentration of 1.5 mg / ml and apply it to the surface of the substrate. After drying, put it in a 100° C. oven and anneal for 10 minutes to form a silver nanowire conductive film;

[0046] (2) Weigh 2 g of poly-L-lactic acid, poly-d-lactic acid and polycaprolactone particles with a mass ratio of 35:35:30 in a beaker, take 50 ml of chloroform as a solvent to dissolve PLLA, PDLA, and PCL particles, Stir at room temperature until uniform;

[0047] (3) Place the substrate with the silver nanowire conductive film in a flat dish, take 20ml of poly-L-lactic acid, poly-D-lactic acid and polycaprolactone blend solution and apply it evenly to the surface of the silver nanowire, and dry it at room temperature After the film is formed, put it into an oven with a temperature of 160°C for annealing, the annealing t...

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Abstract

The invention discloses an electric response shape memory composite material and a preparation method thereof, and belongs to the field of intelligent materials. The electric response shape memory composite material is prepared from a shape memory polymer and a conductive driving layer, and the conductive driving layer is embedded and coated on the surface of the shape memory polymer; and a shape memory material can be driven under a low-voltage condition, and the shape memory material has the advantages of quick response, high shape recovery rate, good biocompatibility and biodegradability.

Description

technical field [0001] The invention belongs to the field of intelligent materials, and in particular relates to an electric response shape memory composite material and a preparation method thereof. Background technique [0002] Shape memory polymer (SMP), as a smart material, can switch between two or more different shapes under the stimulation of external physical changes such as heat, light, magnetic field, humidity, etc. These characteristics, coupled with the low cost and light weight of polymer materials, make shape memory polymers have broad application prospects in the fields of actuators, sensors, mobile wearable devices, and biomedical devices. [0003] At present, most polymer materials come from the petrochemical industry. These polymers have poor biocompatibility and degradability, and their application in biomedicine has certain limitations, and may cause certain pollution to the environment. In order to cope with the energy crisis, alleviate the pressure of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K7/06C08J5/18
CPCC08J5/18C08K2201/011C08K2201/001C08J2367/04C08J2467/04C08K7/06
Inventor 于军胜卢骏柏栋予李璐
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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