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Photo-thermal driven shape memory nano composite material as well as preparation method and application thereof

A technology of nanocomposite materials and nanofillers, which is applied in the field of photothermally driven shape memory nanocomposites and its preparation, can solve the problems of reduced shape memory performance of composite materials, low photothermal conversion efficiency, and poor dispersion of fillers, etc., to achieve stability Shape memory properties, beneficial light absorption and heat diffusion, good dispersion effect

Pending Publication Date: 2021-12-31
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing optically actuated SMPCs have limitations such as poor filler dispersion, reduced shape memory properties of composite materials, insufficient light absorption, low photothermal conversion efficiency, slow actuation speed, and optical actuation only at specific wavelengths, which limit their use. application

Method used

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  • Photo-thermal driven shape memory nano composite material as well as preparation method and application thereof
  • Photo-thermal driven shape memory nano composite material as well as preparation method and application thereof
  • Photo-thermal driven shape memory nano composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation method of the shape-memory nanocomposite of the present embodiment comprises the following steps:

[0035] (1) Ti 3 C 2 T x Preparation of nanosheet solutions

[0036] Dissolve 1.6g LiF powder in 20mL HCl solution with a concentration of 9M, stir magnetically for 10min, and slowly add 1gTi 3 AlC 2 powder, to prevent overheating of the reaction, and then magnetically stirred for 30 hours in a water bath at 35°C, repeatedly washed with deionized water, oscillated, and centrifuged at 7500rpm for 5min, centrifuged 7-10 times until the pH of the supernatant was > 7; Sonicate in a water bath for 120min, then centrifuge the solution at 3500rpm for 30min, take the black supernatant after centrifugation as Ti 3 C 2 T x nanosheet solution.

[0037] (2) Preparation of shape memory nanocomposites

[0038] Take 50mL of Ti with a concentration of 5mg / mL 3 C 2 T x Add the nanosheet solution to 20 g of water-based epoxy resin with a solid content of 50%, magne...

Embodiment 2

[0045] The preparation method of the shape-memory nanocomposite of the present embodiment comprises the following steps:

[0046] (1) Ti 3 C 2 T x Preparation of nanosheet solutions

[0047] Ti in this example 3 C 2 T x The preparation of nanoplatelet solution and Ti in embodiment 1 3 C 2 T x Nanosheets were prepared in the same way.

[0048] (2) Preparation of shape memory nanocomposites

[0049] Take 38mL of Ti with a concentration of 5mg / mL 3 C 2 T x Add the nanosheet solution to 20 g of water-based epoxy resin with a solid content of 50%, magnetically stir for 15 minutes and then ultrasonically treat it for 30 minutes, then add 5 g of water-based amine-based curing agent with a solid content of 50%, stir magnetically for 15 minutes, and then place the mixture in- Freeze-dry at 15~-25°C for 120h, take the dried powder and hot-press for 2h at a temperature of 120°C and a pressure of 10MPa to obtain 1.5wt% Ti with optically driven shape memory properties 3 C 2 ...

Embodiment 3

[0054] The preparation method of the shape-memory nanocomposite of the present embodiment comprises the following steps:

[0055] (1) Ti 3 C 2 T x Preparation of nanosheet solutions

[0056] Ti in this example 3 C 2 T x The preparation of nanoplatelet solution and Ti in embodiment 1 3 C 2 T x Nanosheets were prepared in the same way.

[0057] (2) Preparation of shape memory nanocomposites

[0058] Take 25mL of Ti with a concentration of 5mg / mL 3 C 2 T x Add the nanosheet solution to 20 g of water-based epoxy resin with a solid content of 50%, magnetically stir for 15 minutes and then ultrasonically treat it for 30 minutes, then add 5 g of water-based amine-based curing agent with a solid content of 50%, stir magnetically for 15 minutes, and then place the mixture in- Freeze-dry at 15°C to -25°C for 120h, take the dried powder and hot-press for 2h at a temperature of 120°C and a pressure of 10MPa to obtain 1wt% Ti with optically driven shape memory properties 3 C ...

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Abstract

The invention belongs to the field of shape memory polymer composite materials, and particularly relates to a photo-thermal driven shape memory nano composite material as well as a preparation method and an application thereof. According to the photo-thermal driven shape memory nano composite material, the shape memory nano composite material comprises an epoxy resin matrix and a two-dimensional MXene nano filler dispersed in the epoxy resin matrix. The photo-thermal driven shape memory nano composite material disclosed by the invention has a rapid photo-response effect and good shape recovery performance.

Description

technical field [0001] The invention belongs to the field of shape-memory polymer composite materials, and in particular relates to a photothermal-driven shape-memory nanocomposite material and a preparation method and application thereof. Background technique [0002] Shape memory polymers (SMPs) are intelligently deformable stimuli-responsive materials that can change from external forces when exposed to specific stimuli such as heat, electricity, light, water, and alternating magnetic fields. The resulting temporary shape reverts to the original shape. Compared with shape memory alloys and shape memory ceramics, SMPs have the advantages of light weight, large deformation, easy processing, low cost, and strong weather resistance. Application prospect. According to different external stimuli, SMPs can be divided into thermal drive, electric drive, light drive and solvent drive and other types. Most of the existing SMPs are thermally driven, but the potential application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K7/00C08K3/14
CPCC08K7/00C08K3/14C08K2201/011C08L2201/12C08L63/00
Inventor 池张易董余兵傅雅琴
Owner ZHEJIANG SCI-TECH UNIV
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