Low-temperature-resistant ionic conduction hydrogel and preparation method and application thereof
A technology of ion conduction and low temperature resistance, applied in the field of composite materials, can solve the problems of high material cost, environmental health hazards, loss of elasticity and conductivity, etc., and achieve high mechanical properties and electrical conductivity, and wide application prospects
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[0035] The invention provides a method for preparing a low-temperature-tolerant ion-conductive hydrogel, comprising the following steps:
[0036] (1) Minerals, water and organic acids are mixed to obtain an organic acid-coated mineral solution;
[0037] (2) Carrying out insulation treatment after dissolving the natural polymer compound to obtain a pre-gel solution;
[0038] (3) Add the organic acid-coated mineral solution, acrylamide, ammonium persulfate, N, N-methylenebisacrylamide and tetramethylethylenediamine successively to the pregel solution, and then keep warm Process to obtain a hydrogel precursor solution;
[0039] (4) standing still after degassing the hydrogel precursor solution to obtain a hydrogel;
[0040] (5) soaking the hydrogel in a calcium chloride solution to obtain a low-temperature-tolerant ion-conductive hydrogel;
[0041] The steps (1) and (2) are not limited by the order of time.
[0042] The invention mixes minerals, water and organic acid to obta...
Embodiment 1
[0052] Weigh 0.2 g of talc powder and dissolve it in 100 mL of deionized water, then add 0.2 g of citric acid, and stir at room temperature for 6 hours to obtain a uniform citric acid-coated talc powder solution for use.
[0053] Dissolve 0.3g of chitosan in 10mL of acetic acid, stir at 25°C for 3h, then incubate at 60°C for 0.5h to obtain a uniform solution, take 0.4mL of prepared citric acid-coated talc powder and add it under vigorous stirring Stirring was continued in the above solution for 1 h, then 1.0 g of acrylamide was added to the above solution and 10 mL of deionized water was added and stirred for 2 h. Add 0.005 g ammonium persulfate, 0.010 g N, N-methylenebisacrylamide and 20 μL tetramethylethylenediamine to the above solution, and then incubate the sample at 60 °C for 4 h to obtain a hydrogel precursor solution . The prepared hydrogel precursor solution was degassed and poured into a small round bottom beaker, and the sample was left at room temperature for 12 h...
Embodiment 2
[0058] Weigh 0.25 g of talc powder and dissolve it in 100 mL of deionized water, then add 0.25 g of tannic acid, and stir at room temperature for 6 hours to obtain a uniform tannic acid-coated talc powder solution for use.
[0059] Dissolve 0.3g of sodium alginate in 10mL of deionized water, stir at 25°C for 3h, then keep at 60°C for 0.5h to obtain a uniform solution, take 0.2mL of the prepared tannic acid-coated talc powder and stir vigorously Added to the above solution and continued to stir for 1h. Then add 1.0 g of acrylamide to the above solution, add 10 mL of deionized water and stir for 2 hours, add 0.005 g of ammonium persulfate, 0.010 g of N, N-methylenebisacrylamide and 20 μL of tetramethylethylenediamine to the above solution, and then the sample was incubated at 60 ° C for 4 h to obtain a hydrogel precursor solution. The prepared hydrogel precursor solution was degassed and poured into a small round bottom beaker, and the samples were left at room temperature for ...
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Abstract
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