Preparation method of multifunctional polyelectrolyte hydrogel bionic intelligent skin

A polyelectrolyte and smart skin technology, applied in the field of polymer materials, can solve problems such as difficulty in automatic adjustment with the environment, limited stretchability, and difficulty in self-repair, and achieves a green, environmentally friendly, pollution-free preparation process, loose preparation conditions, and a smooth preparation process. easy effect

Inactive Publication Date: 2018-10-19
雷周玥 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this hydrogel bionic smart skin still has disadvantages such as low modulus, limited stretchability, easy fatigue, difficult self-healing after fracture, and difficult to automatically adjust the appearance with the environment once synthesized. The mechanical properties of the glue itself are crucial to the development of related smart devices in the future

Method used

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  • Preparation method of multifunctional polyelectrolyte hydrogel bionic intelligent skin
  • Preparation method of multifunctional polyelectrolyte hydrogel bionic intelligent skin
  • Preparation method of multifunctional polyelectrolyte hydrogel bionic intelligent skin

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preparation example Construction

[0021] The preparation method of the multifunctional polyelectrolyte hydrogel bionic intelligent skin of the present invention comprises the following steps: (a) mixing 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate and methacrylic acid Dispersed in water to obtain an aqueous monomer solution; (b) adding an initiator to the aqueous monomer solution to react to obtain a hydrogel; (c) sandwiching a dielectric layer with two layers of the hydrogel to form a parallel plate capacitance and resistance Bionic smart skin with other electrical devices. By cleverly utilizing the ionic bonds and hydrogen bonds of two or more electrolyte monomers, the preparation of hydrogel materials with adjustable appearance and mechanical properties can be realized, and further combined with circuit design, the preparation of hydrogel materials with appearance transparency that can change with temperature, The bionic smart skin with adjustable mechanical effects and sensing sensitivity does n...

Embodiment 1

[0025] The present embodiment provides a kind of preparation method of multifunctional polyelectrolyte hydrogel biomimetic intelligent skin, and it comprises the following steps:

[0026] (a) Disperse 20g of 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate and 8g of methacrylic acid in 70ml of water, and stir to obtain an aqueous monomer solution;

[0027] (b) Add 0.28g initiator to the above monomer aqueous solution, and then heat and react at 50°C for 24 hours to obtain a hydrogel with adjustable appearance transparency, compressibility, stretchability, fatigue resistance, and self-repairing effect. For transparency and mechanical properties see figure 1 , Table 1 and Table 2; from figure 1 It can be seen that the prepared hydrogel has the effect of being opaque at room temperature and becoming transparent at high temperature (UCST); as can be seen from Table 1, the prepared hydrogel has an elongation at break of more than 10000%, high tensile strength Strength, tim...

Embodiment 2

[0030] This embodiment provides a kind of preparation method of multifunctional polyelectrolyte hydrogel biomimetic intelligent skin, and it is basically the same as that in Example 1, the difference is: in step (a), 8g 3-(2-methylpropene Acyloxyethyl dimethylamino)propanesulfonate and 20g of methacrylic acid are dispersed in 70ml of water, and stirred evenly to obtain a monomer aqueous solution, see figure 1 , Table 1 and Table 2; the effect of bionic smart skin is as follows figure 2 (b) and figure 2 (d) shown. It can be seen that the hydrogels made of monomers with different proportions can sense the movement of prosthetic limbs, have different proportions of capacitive response signals, and can also sense the environmental temperature changes caused by heat gun heating, and their transparency and resistance signals change accordingly.

[0031] The mechanical data of hydrogel in table 1 embodiment 1 and embodiment 2

[0032]

[0033] The sensory data of hydrogel in ...

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Abstract

The invention relates to a preparation method of multifunctional polyelectrolyte hydrogel bionic intelligent skin. The preparation method comprises the following steps: (a) dispersing 3-(2-methacryloyloxyethyldimethylamino)propanesulfonate and methacrylic acid into water to prepare a monomer water solution; (b) adding an initiator into the monomer water solution and reacting to obtain hydrogel; (c) clamping a dielectric layer by utilizing two layers of the hydrogel so as to construct the bionic intelligent skin. The bionic intelligent skin, which has the advantages that the appearance transparency can be changed along the temperature, and the mechanical effect and the sensing sensitivity can be adjusted, is prepared; any organic solvent is not used in a preparation process; only one-step reaction is needed and complicated synthesis steps are not needed; simple processing including 3D (Three Dimensional) printing and the like can be carried out; the preparation process is simple and environmentally friendly and does not cause pollution; preparation conditions are relatively loose and the preparation method is suitable for large-scale and mass production and has a wide commercial application prospect.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to a polyelectrolyte hydrogel, in particular to a preparation method of a multifunctional polyelectrolyte hydrogel bionic intelligent skin. Background technique [0002] In recent years, with the rapid development of the "Internet of Things" concept, related industries and technical fields are also facing more opportunities and challenges. Sensors, as the underlying accessories of the Internet of Things, are key devices that support the operation of the entire Internet of Things. In order to obtain More data requires significant investment. For the actual operation of the Internet of Things, the basis for large-scale investment in sensors lies in the continuous decline in costs and the convenience and efficiency of use. Therefore, the key technologies supporting the development of the Internet of Things include the development of intelligent sensing devices with large area, low cost, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/38C08F220/06C08F220/56C08F222/38
CPCC08F220/06C08F220/38C08F220/387C08F220/56C08F222/385
Inventor 雷周玥武培怡
Owner 雷周玥
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