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
3 Cites 29 Cited by

AI-Extracted 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 transmi...
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Method used

Columnar model is shown in Figure 2, and 10mL plastic tube is taken as mold (Figure 2 (a)), and the precursor solution prepared before adding (i.e. system before initiation) is cross-linked by thermal initiation system to obtain columnar ion Liquid gel (Fig. 2(b)), apply an appropriate amount of copper chloride crystals on the surface, cut the gel into 4 parts with a razor blade (Fig. 2(c)), and then splicing the 4 parts of the gel randomly (different segments Copper chloride crystals were applied in different amounts to distinguish different sections in appearance), and placed for 5s (Fig. 2(d)). The bridge load model is shown in Figure 3. The spliced ​​gel is suspended in the air, and it can be seen that the gel can still mai...
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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.

Technology Topic

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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(20)
  • Effect test(1)

Example Embodiment

[0040] Example 1
[0041] Use 1-ethyl-3-methylimidazole ethyl sulfate as the ionic liquid filling liquid, add N,N-dimethylacrylamide (DMAA) and α-ketoglutarate to it, stir and mix well, Put it into a small flask connected with a nitrogen bottle and a suction tube, alternately perform suction and inflation processes to remove oxygen in the system, then add it to a glass mold or transparent plastic mold, and place it under a UV lamp for 2 hours to cause free radical gathering After the reaction, an 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. Among them, DMAA is 33% of the total mass of 1-ethyl-3-methylimidazole ethyl sulfate, DMAA and α-ketoglutarate, and the amount of α-ketoglutarate is 0.5% of the amount of DMAA substance.

Example Embodiment

[0042] Example 2
[0043] Use 1-ethyl-3-methylimidazole ethyl sulfate as the ionic liquid filling liquid, add N-hydroxyethyl acrylamide (HEAA) and 2-hydroxy-methyl phenyl acetone, stir and mix thoroughly, Put it into a small flask connected with a nitrogen cylinder and an exhaust pipe, alternately perform the process of pumping and inflating to remove oxygen in the system, then add it to a glass mold or a transparent plastic mold, and place it under an ultraviolet lamp for 4 hours to get An ionic liquid gel with a tensile strength of 0.38 MPa, an elongation at break of 2800%, and a light transmittance of 93%. Wherein, the amount of HEAA is 36% of the total mass of 1-ethyl-3-methylimidazole ethyl sulfate salt, HEAA and 2-hydroxy-methylphenylacetone. The amount of 2-hydroxy-methyl phenyl acetone is 1% of the amount of the substance of HEAA.

Example Embodiment

[0044] Example 3
[0045] Using 1-ethyl-3-methylimidazole ethyl sulfate as the ionic liquid filling liquid, add monomer and 2-methyl-2-(4-morpholinyl)-1-[4-(methylsulfide) to it Benzyl) phenyl]-1-acetone, stir and mix well, put it into a small flask connected with a nitrogen cylinder and an exhaust pipe, alternately perform exhaust and inflation processes to remove oxygen in the system, and then add the glass mold or In a transparent plastic mold, irradiated 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-acetone.
[0046] The monomer is a mixture of N,N-dimethylacrylamide (DMAA), N-methylolacrylamide (HMAA) and N-hydroxyethylacrylamide (HEAA) in any ratio.
[0047] The amount of 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-acetone was 0.5% of the amount of monomer.
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PUM

PropertyMeasurementUnit
Tensile strength0.35mPa
Tensile strength0.38mPa
Tensile strength0.65mPa
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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