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Preparation method of high-transmittance self-healing ionic liquid gel with good mechanical properties

An ionic liquid, self-healing technology, applied in the field of preparation of ionic liquid gel, can solve the problems of low tensile strength and elongation at break, insufficient light transmittance of ionic gel, insufficient mechanical properties, etc., and achieve high fracture Elongation, excellent self-healing function, the effect of accelerating the rate of initiation

Inactive Publication Date: 2017-05-10
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the reported literature, there are generally defects of insufficient mechanical properties (lower tensile strength and elongation at break), low light transmittance and other deficiencies, and there is no literature report on the self-healing of ionogels.
In addition, ionogels also have the problem of insufficient light transmittance.

Method used

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  • Preparation method of high-transmittance self-healing ionic liquid gel with good mechanical properties
  • Preparation method of high-transmittance self-healing ionic liquid gel with good mechanical properties
  • Preparation method of high-transmittance self-healing ionic liquid gel with good mechanical properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Using 1-ethyl-3-methylimidazolium ethyl sulfate as the ionic liquid filling solution, add N,N-dimethylacrylamide (DMAA) and α-ketoglutaric acid to it, stir and mix well, Put it into a small flask connected with a nitrogen bottle and an exhaust tube, alternately perform the pumping and inflation process to eliminate the oxygen in the system, then put it into a glass mold or a transparent plastic mold, and irradiate it under an ultraviolet lamp for 2 hours to initiate free radical gathering After the reaction, the ionic liquid gel with a tensile strength of 0.35 MPa, an elongation at break of 3000% and a light transmittance of 94% can be obtained. Wherein, DMAA is 33% of the total mass of 1-ethyl-3-methylimidazole ethyl sulfate, DMAA and α-ketoglutaric acid, and the amount of α-ketoglutaric acid is 0.5% of the amount of DMAA substance.

Embodiment 2

[0043] Use 1-ethyl-3-methylimidazolium ethyl sulfate as the ionic liquid filling solution, add N-hydroxyethylacrylamide (HEAA) and 2-hydroxy-methyl phenylacetone to it, and stir and mix thoroughly, Put it into a small flask connected with a nitrogen bottle and an exhaust tube, alternately perform the process of pumping and inflating to eliminate the oxygen in the system, then put it into a glass mold or a transparent plastic mold, and irradiate it under an ultraviolet lamp for 4 hours to obtain The tensile strength is 0.38MPa, the elongation at break is 2800%, and the light transmittance is 93% of the ionic liquid gel. Wherein, the amount of HEAA is 36% of the total mass of 1-ethyl-3-methylimidazolium ethyl sulfate, HEAA and 2-hydroxy-methyl phenylacetone. The amount of 2-hydroxy-methylpropiophenone was 1% of the amount of substance of HEAA.

Embodiment 3

[0045] With 1-ethyl-3-methylimidazolium ethyl sulfate salt as the ionic liquid filling liquid, add monomer and 2-methyl-2-(4-morpholinyl)-1-[4-(methylsulfide) Base) phenyl]-1-acetone, after fully stirring and mixing, put it into a small flask connected with a nitrogen bottle and an exhaust tube, and alternately perform the process of exhausting and inflating to eliminate the oxygen in the system, and then add a glass mold or Put it in a transparent plastic mold and irradiate it under an ultraviolet lamp for 2 hours to obtain an ionic liquid gel with a tensile strength of 0.65 MPa, an elongation at break of 2000%, and a light transmittance of 95%. Among them, the quality of the monomer is 1-ethyl-3-methylimidazole ethyl sulfate salt, monomer, 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio) 45% of the total mass of phenyl]-1-propanone.

[0046] The monomer is a mixture of N,N-dimethylacrylamide (DMAA), N-methylolacrylamide (HMAA) and N-hydroxyethylacrylamide (HEAA) in any proporti...

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Abstract

A preparation method of high-transmittance self-healing ionic liquid gel with good mechanical properties comprises: adding a monomer and a photoinitiator into ionic liquid, mixing well, removing oxygen, adding to a light-transmitting container, and exposing to an ultraviolet lamp to obtain the ionic liquid gel; or comprises: adding a monomer and a thermal initiator into ionic liquid, mixing well, removing oxygen, adding to a mold, mixing well under stirring, and curing to obtain ionic liquid gel. By modifying ionic liquid gel synthetic process parameters, such as the monomer for reaction, molar ratio of the monomer, reaction time, and initiating mode, self-healing property can be introduced to the field of ionic liquid gels successfully, and certain stress tolerance is imparted; the mechanical properties of the gel are significantly improved, the yellowing problem common in ionic gels is solved, and the gel has good light transmittance; the gel has a promising application prospect in the crossing field of gels.

Description

technical field [0001] The invention relates to an ionic liquid gel, in particular to a preparation method of an ionic liquid gel with excellent mechanical properties, high light transmission and self-healing. Background technique [0002] Ionic liquids are organic molten salts that are in a liquid state at or near room temperature, and are composed of anions and cations, also known as low-temperature molten salts. Ionic liquids have unique physical and chemical properties such as low vapor pressure, high electrical conductivity, wide electrochemical window, and good thermal stability, which have aroused interest and widespread attention in academia and industry. [0003] The polyionic liquid can be obtained by polymerizing the ionic liquid. According to the chemical structure, polyionic liquids can be divided into the following categories: (1) polycationic ionic liquids, that is, cations are covalently bonded to the polymer backbone; (2) polyanionic ionic liquids, that is,...

Claims

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Application Information

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IPC IPC(8): C08F120/54C08F120/58C08F220/54C08F220/58C08F220/28C08F2/48C08J3/09C08L33/24
CPCC08F2/48C08F120/54C08F120/58C08F220/28C08F220/54C08F220/58C08J3/09C08J2333/24C08F220/281
Inventor 杨建海刘建辉刘通秀陈咏梅汪颐勋
Owner XI AN JIAOTONG UNIV
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