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Single-layer hydrogel, preparation method and application of single-layer hydrogel as flexible gripper

A hydrogel, single-layer technology, applied in the direction of manipulators, manufacturing tools, chucks, etc., can solve the problems of limiting practical applications, the inability to realize fast and complex adjustable drives, and the complicated process of operating local heterogeneous structures, so as to achieve simplification The effect of the preparation process

Pending Publication Date: 2020-06-26
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not enable fast and complex tunable actuation
In addition, the process of manipulating local heterogeneous structures is very complicated, which limits their practical application

Method used

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  • Single-layer hydrogel, preparation method and application of single-layer hydrogel as flexible gripper
  • Single-layer hydrogel, preparation method and application of single-layer hydrogel as flexible gripper
  • Single-layer hydrogel, preparation method and application of single-layer hydrogel as flexible gripper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of preparation method of the monolayer hydrogel of dropping ethanol

[0041] Step (1), adding the preparation raw materials into the dispersion medium, stirring evenly under the condition of avoiding light until the preparation raw materials are completely dissolved, to obtain a transparent (N-isopropylacrylamide)-clay precursor solution; wherein, the dispersion medium includes Water, dyestuff, described raw material comprises polymerization reaction monomer, chemical cross-linking agent, photoinitiator and porogen, described polymerization reaction monomer is N-isopropyl acrylamide, and described chemical cross-linking agent is synthetic lithium Montmorillonite (Laponite XLG), the photoinitiator is 1-hydroxycyclohexyl-phenylketone (1-Hydroxy-cyclohexyl-phenylketone), and the pore-forming agent is ethanol; specifically, the concentration is 0.2g / L dye (methylene blue or rhodamine B) was dispersed in water and stirred for 10 minutes to obtain a dye solution, and t...

Embodiment 2

[0045] A kind of preparation method of the monolayer hydrogel of dropping methanol

[0046] Step (1), adding the preparation raw materials into the dispersion medium, stirring evenly under the condition of avoiding light until the preparation raw materials are completely dissolved, to obtain a transparent (N-isopropylacrylamide)-clay precursor solution; wherein, the dispersion medium includes Water, dyestuff, described raw material comprises polymerization reaction monomer, chemical cross-linking agent, photoinitiator and porogen, described polymerization reaction monomer is N-isopropyl acrylamide, and described chemical cross-linking agent is synthetic lithium Montmorillonite (Laponite XLG), the photoinitiator is 1-hydroxycyclohexyl-phenylketone (1-Hydroxy-cyclohexyl-phenylketone), and the pore-forming agent is methanol; specifically, the concentration is 0.2g / L dye (methylene blue or rhodamine B) was dispersed in water and stirred for 10 minutes to obtain a dye solution, and...

Embodiment 3

[0050] A kind of preparation method of the monolayer hydrogel of dripping glycerol

[0051] Step (1), adding the preparation raw materials into the dispersion medium, stirring evenly under the condition of avoiding light until the preparation raw materials are completely dissolved, to obtain a transparent (N-isopropylacrylamide)-clay precursor solution; wherein, the dispersion medium includes Water, dyestuff, described raw material comprises polymerization reaction monomer, chemical cross-linking agent, photoinitiator and porogen, described polymerization reaction monomer is N-isopropyl acrylamide, and described chemical cross-linking agent is synthetic lithium Montmorillonite (Laponite XLG), the photoinitiator is 1-hydroxycyclohexyl-phenylketone (1-Hydroxy-cyclohexyl-phenylketone), and the pore-forming agent is glycerol; specifically, the concentration is 0.2g / L dye (methylene blue or rhodamine B) was dispersed in water and stirred for 10 minutes to obtain a dye solution, an...

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Abstract

The invention discloses single-layer hydrogel, a preparation method and application of the single-layer hydrogel as a flexible gripper. The preparation method comprises the following steps: preparinga precursor solution; injecting the precursor solution into a circular plastic mold, dropwise adding different types of alcohols on the surface of the precursor solution by utilizing liquid level layering and interface permeation principles, and forming permeation of upper-layer alcohol liquid to the precursor solution to different degrees by controlling the types of the alcohols and the permeation time; then carrying out low-temperature ultraviolet radiation cross-linking, and after the permeated precursor solution is completely cross-linked; soaking and pretreating with deionized water to obtain single-layer hydrogel; the single-layer hydrogel disclosed by the invention is easily available in raw materials, simple to prepare, high in efficiency and good in repeatability, and is a methodcapable of preparing the single-layer hydrogel on a large scale, and in addition, the single-layer hydrogel has good responsive bending performance and can be used as a mechanical gripper capable of realizing temperature control.

Description

technical field [0001] The invention relates to the technical field of structural design and application of hydrogel materials, in particular to a single-layer hydrogel, a preparation method and an application as a flexible gripper. Background technique [0002] Hydrogels have diverse stimuli-responsive properties and have similar water contents to biological soft tissues. Therefore, hydrogels have a wide range of potential applications in the fields of biomedicine and soft robotics. Hydrogels can produce reversible deformations under external stimuli, such as water loss shrinkage and water absorption swelling, but these deformations are often indiscriminate and uncontrollable. Therefore, it is necessary to design the structure of the hydrogel so that it has an anisotropic structure, so that the deformation can be controlled. [0003] Smart hydrogels, which undergo drastic changes in volume or other properties in response to external stimuli such as temperature, pH, humidi...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08J3/28C08J3/24C08J9/00C08L33/24C08F120/54C08F2/48C08K3/34B25J15/00
CPCC08J3/075C08J3/28C08J3/24C08J9/00C08J9/0066C08F120/54C08F2/48C08K3/34B25J15/00C08J2333/24
Inventor 刘爱萍董鹏丽许为中姚游星匡中文
Owner ZHEJIANG SCI-TECH UNIV