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Rapid photo-thermal response shape memory driver as well as preparation method and application thereof

A photothermal response and driver technology, applied in textiles and papermaking, fiber processing, fiber types, etc., can solve the problems of high market price and unfavorable industrial promotion and use, and achieve excellent mechanical properties, enhanced mechanical properties, and high sensitivity.

Active Publication Date: 2021-05-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high market price of MXene materials is not conducive to its industrial promotion and use, so it is urgent to propose an improved solution with fast response and low cost

Method used

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  • Rapid photo-thermal response shape memory driver as well as preparation method and application thereof
  • Rapid photo-thermal response shape memory driver as well as preparation method and application thereof
  • Rapid photo-thermal response shape memory driver as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Preparation of MC-1 composite film

[0043] The Tg-SMPU electrospun membrane was cut into a size of 40mm×40mm, heated and stretched, and the pre-stretched ratio was 20%. Take 0.8mL of MXene aqueous solution with a concentration of 5mg / mL and 0.4ml of an aqueous solution of CNCs with a concentration of 10mg / mL in a centrifuge tube, mix them, and sonicate to obtain a mixed aqueous solution of MXene / CNCs, which is evenly drip-coated on the electrospun membrane. The MC-1 composite film can be obtained by drying with an infrared lamp, and the film thickness is about 100 μm. Such as figure 1 It is shown that after mixing CNC with high rigidity and MXene, the original large sheets of MXene will be fragmented, which will facilitate multiple reflections of light between sheets to improve the light-to-heat conversion efficiency. The morphology of the MC-1 composite film was characterized by scanning electron microscopy, as shown in figure 2 As shown, MXene and CNCs deposi...

Embodiment 2

[0051] (1) Preparation of MC-2 composite membrane

[0052] The Tg-SMPU electrospun membrane was cut into a size of 40mm×40mm, heated and stretched, and the pre-stretched ratio was 20%. Take 0.8mL of MXene aqueous solution with a concentration of 5mg / mL and 0.8ml of an aqueous solution of CNCs with a concentration of 10mg / mL in a centrifuge tube, mix them, and sonicate to obtain a mixed aqueous solution of MXene / CNCs, which is evenly drip-coated on the electrospun membrane. The MC-2 composite film can be obtained by drying with an infrared lamp, and the film thickness is about 100 μm.

[0053] (2) Photothermal test

[0054] Cut the MC-2 composite film into a size of 10mm×10mm, adjust the intensity of the infrared laser, and make the spot irradiate the surface of the sample, and record the surface temperature of the sample with a thermal imager. Observe its temperature change, when its temperature reaches the saturation temperature and remains stable, turn off the laser power....

Embodiment 3

[0056] (1) Preparation of MC-3 composite membrane

[0057] The Tg-SMPU electrospun membrane was cut into a size of 40mm×40mm, heated and stretched, and the pre-stretched ratio was 20%. Take 0.8mL of MXene aqueous solution with a concentration of 5mg / mL and 1.2ml of an aqueous solution of CNCs with a concentration of 10mg / mL in a centrifuge tube, mix them, and sonicate to obtain a mixed aqueous solution of MXene / CNCs, which is evenly drip-coated on the electrospun membrane. The MC-3 composite film can be obtained by drying with an infrared lamp, and the film thickness is about 100 μm.

[0058] (2) Photothermal test

[0059] Cut the MC-3 composite film into a size of 10mm×10mm, adjust the intensity of the infrared laser, and make the spot irradiate the surface of the sample, and record the surface temperature of the sample with a thermal imager. Observe its temperature change, when its temperature reaches the saturation temperature and remains stable, turn off the laser power....

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Abstract

The invention discloses a rapid photo-thermal response shape memory driver as well as a preparation method and application thereof. A substrate of the driver is a flexible substrate fiber membrane with a micro-nano fiber structure and a shape memory function, and cellulose nanocrystalline and a conductive two-dimensional MXene material are deposited on the flexible substrate fiber membrane. The photo-thermal response speed of the shape memory driver is high, and the temperature of the surface of the shape memory driver can rapidly reach 80 DEG C or above within 20 s under the stimulation of near-infrared rays of 80-140 mW / cm <2>.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and in particular relates to a fast photothermal response shape memory driver and its preparation method and application. Background technique [0002] With the rapid development of artificial intelligence technology, it is of great significance to develop new intelligent materials that can accurately perceive, analyze, identify and process external stimuli and have certain execution capabilities. Shape memory polymers are a new class of functional polymer materials that can be deformed and fixed into a temporary shape under certain conditions, and can recover their shape after external stimuli. According to the type of stimulation to realize the memory function, it can be divided into different types such as thermal response type, photoinduced response type, electroinduced response type, and magnetic response type. The photothermal responsive shape memory material is to add phototherm...

Claims

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Application Information

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IPC IPC(8): D06M15/05D06M11/74D06M101/38
CPCD06M15/05D06M11/74D06M2101/38
Inventor 罗洪盛吴少英姚仰荣申伟彭博煜刘厚麟黄雪儿
Owner GUANGDONG UNIV OF TECH
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