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A fast-response nanocomposite hydrogel fiber actuator and its preparation method

A nano-composite, hydrogel technology, applied in the fields of fiber chemical characteristics, rayon manufacturing, single-component synthetic polymer rayon, etc., can solve the problems of low movement efficiency, high cost, and slow response rate of hydrogel actuators , to achieve the effects of high exercise efficiency, fast response rate, and simple and efficient preparation method

Active Publication Date: 2021-11-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a fast-response nanocomposite hydrogel fiber actuator and its preparation method, which overcomes the disadvantages of the prior art hydrogel actuators such as slow response rate, low movement efficiency and high cost of complex structure design. place

Method used

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  • A fast-response nanocomposite hydrogel fiber actuator and its preparation method
  • A fast-response nanocomposite hydrogel fiber actuator and its preparation method
  • A fast-response nanocomposite hydrogel fiber actuator and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A single hydrogel fiber actuator is prepared by simultaneous polymerization-stretching into fibers, such as figure 1 and figure 2 shown.

[0042] Weigh 5mL of deionized water, 0.75g of Laponite, and 0.015g of potassium persulfate at room temperature and stir for 3 hours until potassium persulfate is completely dissolved. 2# dispersion liquid. Continue to weigh 0.5g OEGMA (Mw=500) into 1# dispersion, 0.5g NIPAAm (Mw=112) into 2# dispersion, and stir for 1 hour to obtain 1# gel prepolymerization solution and 2# gel prepolymerization solution.

[0043] Add 5 μL accelerator N,N,N,N-tetramethylethylenediamine to 2# gel pre-polymerization solution, and quickly transfer the pre-polymerization solution to 2mm inner diameter, 50cm long 2# polytetrafluoroethylene In the vinyl fluoride tube, after 8 minutes, add 8 μL accelerator N,N,N,N-tetramethylethylenediamine to the 1# gel pre-polymerization solution, and quickly transfer the pre-polymerization solution to 2mm within 1 mi...

Embodiment 2

[0045] Weigh 10 mL of deionized water, 1 g of Laponite, 0.1 g of graphene oxide, and 0.04 g of potassium persulfate at room temperature and stir for 4 hours until the potassium persulfate is completely dissolved. Divide the dispersion into two equal parts and record them as 1# dispersion and 2# dispersion. Continue to weigh 1.2g OEGMA (Mw=800) into 1# dispersion, 1g NIPAAm (Mw=112) into 2# dispersion, and stir for 1 hour to obtain 1# gel prepolymerization and 2# gel prepolymerization.

[0046] Add 15 μL accelerator N,N,N,N-tetramethylethylenediamine to 2# gel pre-polymerization solution, and quickly transfer the pre-polymerization solution to 2mm inner diameter, 10cm long multiple 2# In the polytetrafluoroethylene tube, after 8 minutes, add 20 μL accelerator N,N,N,N-tetramethylethylenediamine to the 1# gel pre-polymerization solution, and quickly transfer the pre-polymerization solution within 1 minute Into 2mm inner diameter, 10cm long multiple 1# polytetrafluoroethylene tub...

Embodiment 3

[0048] Weigh 8 mL of deionized water, 1 g of Laponite, 0.2 g of cellulose nanofibers, and 0.024 g of potassium persulfate at room temperature and stir for 4 hours until the potassium persulfate is completely dissolved. It is 1# dispersion liquid and 2# dispersion liquid. Continue to weigh 0.6g OEGMA (Mw=300) into 1# dispersion, 1g NIPAAm (Mw=112) into 2# dispersion, and stir for 1 hour to obtain 1# gel prepolymerization and 2# gel prepolymerization.

[0049] Add 8 μL of accelerator N,N,N,N-tetramethylethylenediamine to the 2# gel prepolymerization solution, and quickly transfer the prepolymerization solution to 2# polytetrafluoroethylene with an inner diameter of 3mm and a length of 50cm within 1min. In the vinyl fluoride tube, after 10min, add 12μL accelerator N,N,N,N-tetramethylethylenediamine to the 1# gel prepolymerization solution, and quickly transfer the prepolymerization solution to 3mm gel within 1min. Inner diameter, 50cm long 1# polytetrafluoroethylene tube. After...

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Abstract

The invention relates to a fast-response nanocomposite hydrogel fiber actuator and a preparation method thereof. The actuator is made by contacting two nascent hydrogels in parallel and simultaneously stretching, so that the nascent hydrogels each form a highly oriented internal structure. A continuous network structure and a cross-linked structure are formed between the gel interfaces to obtain. The fast-response nanocomposite hydrogel fiber actuator prepared by the present invention has a wide range of applications, high response rate, low preparation cost, diverse and efficient motion forms, and provides a practical basis for the design and preparation of bionic flexible actuators with both response rate and deformation ability. effective new ideas.

Description

technical field [0001] The invention belongs to the field of hydrogel driver and its preparation, in particular to a fast-response nanocomposite hydrogel fiber driver and its preparation method. Background technique [0002] Compared with traditional actuators with mechanical structures, hydrogel actuators can achieve complex and intelligent mechanical deformation through simple structural design by virtue of the response of hydrogels to external stimuli such as temperature and light. This makes hydrogel actuators an ideal material for designing and fabricating soft robots and artificial muscles. At the same time, some hydrogels have the advantages of high biocompatibility, intelligent water absorption and non-contact control, and have been widely used in medical science, soft electronics and other fields. However, due to the limitations of cross-linking methods and structures, the current hydrogel actuators present the disadvantage of slow response to external stimuli. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/44D01F1/10C08F290/06C08F220/54C08F220/28
CPCC08F220/54C08F290/062D01F1/10D01F6/44
Inventor 朱美芳陈涛危培玲陈国印侯恺
Owner DONGHUA UNIV
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