Ion gel with both hydrophobicity and high resilience, preparation method and application thereof

Ion gels prepared using polysulfide crosslinking network polymers and hydrophobic ionic liquids solve the stability and reliability problems of existing ionic gels in long-term applications, achieving a combination of high hydrophobicity and high resilience.

CN116284782BActive Publication Date: 2025-03-25SAI GAN KE JI (SHEN ZHEN) YOU XIAN GONG SI
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Patent Information

Application Number
CN202310268595.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-03-15
Publication Date
2025-03-25
Estimated Expiration
2043-03-15

AI Technical Summary

Technical Problem

In long-term applications, existing ionic gels have problems such as volatility of water media, high viscosity of polymer frameworks, severe hysteresis under alternating stress, and significant influence of air humidity, which affects its stability and reliability.

Method used

An ionic gel with hydrophobic properties and high resilience was prepared by ultraviolet light polymerization. Polysulfide crosslinking network polymers contain carbon ether bonds, sulfide bonds and hydrophobic alkyl chain segments. The hydrophobic ionic liquid acts as lubricant and ionic conductive agents to regulate the hydrophobicity and mechanical properties of the gel.

Benefits of technology

The ionic gel with high hydrophobic angle at room temperature is achieved, with stable mechanical properties and high resilience, and the mechanical properties are stable under different humidity conditions for a long time, avoiding stress hysteresis and stress softening.

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Abstract

The present invention discloses an ion gel with both hydrophobicity and high resilience, comprising a polythioether cross-linked network polymer and a hydrophobic ionic liquid; the polythioether cross-linked network polymer comprises a carbon ether bond, a thioether bond and a hydrophobic alkyl segment, and the ion gel comprises 5 mole parts of divinyl ether, 3.5 to 4.5 mole parts of dihydric mercaptan, 0.33 to 1.0 mole parts of polythiol, 0.1 to 5 mole parts of ionic liquid and 0.05 to 0.2 mole parts of photoinitiator, and is obtained by ultraviolet light polymerization for 1 to 10 minutes. The present invention solves the problems that linear polymers lack spatial three-dimensional structures, the interaction between polymer chains is weak during deformation recovery, there is a large hysteresis in deformation recovery, and the ion gel has poor resilience, and also solves the technical problem that the existing ionic liquid has poor compatibility with the polymer skeleton.
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