Cyclodextrin supermolecular composite phase-change energy-storage superfine fiber and preparation method and application thereof
A composite phase change and ultra-fine fiber technology, applied in fiber processing, cellulose/protein conjugated rayon, filament/thread forming, etc., can solve the problems of complex post-processing methods, and achieve low cost, high heat Stability, the effect of simplifying the preparation process
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Embodiment 1
[0030] (1) Dissolve 100 parts by mass of cellulose acetate (CA, number average molecular weight 30,000, degree of acetyl substitution 2.5) in a mixed solvent prepared with acetone and N,N-dimethylformamide at a mass ratio of 1:1. into a solution with a mass fraction of 15%; 30 mass parts of α-cyclodextrin and 100 mass parts of polyethylene glycol-4000 are dissolved in water and N,N-dimethylformamide at a mass ratio of 1:1 A solution with a mass fraction of 15% was prepared in a mixed solvent, mechanically stirred for 2 hours to form a cyclodextrin inclusion complex, and then added to a cellulose acetate solution and mechanically stirred to form a mixed spinning solution.
[0031] (2) Put the mixed spinning solution into a liquid storage tank with a spinneret and spin it by high-voltage electrospinning to obtain ultra-fine fibers; the spinning conditions are: the ambient temperature is 25°C, the relative humidity is 90%, the electrospinning voltage is 80kV, the distance between...
Embodiment 2
[0035] (1) Dissolve 100 parts by mass of hydroxypropyl cellulose (highly substituted hydroxypropyl cellulose, number average molecular weight 80,000) in a mixed solvent prepared with ethanol and water at a mass ratio of 5:1 to make a mass fraction of 10% solution; prepared by dissolving 10 parts by mass of β-cyclodextrin and 20 parts by mass of polyethylene glycol-10000 in water and N,N-dimethylacetamide in a mixed solvent with a mass ratio of 1:1 The solution with a mass fraction of 15% was mechanically stirred for 2 hours to form a cyclodextrin inclusion complex, and then added to a hydroxypropyl cellulose solution and mechanically stirred to form a mixed spinning solution.
[0036] (2) Put the mixed spinning solution into a liquid storage tank with a spinneret and spin it by high-voltage electrospinning to obtain ultra-fine fibers; the spinning conditions are: the ambient temperature is 35°C, the relative humidity is 30%, the electrospinning voltage is 5kV, the distance bet...
Embodiment 3
[0040](1) Dissolve 20 parts by mass of hydroxyethyl methylcellulose (molecular weight: 40,000) in a mixed solvent prepared with ethanol and N,N-dimethylformamide at a mass ratio of 1:1 to make a mass fraction of 5% solution; 100 parts by mass of β-permethylated cyclodextrin and 200 parts by mass of pentaerythritol are dissolved in water and N,N-dimethylformamide in a mixed solvent with a mass ratio of 3:1 to make mass The solution with a fraction of 20% was mechanically stirred for 2 hours to form a cyclodextrin inclusion complex, and then hydroxyethyl methylcellulose solution was added and mechanically stirred to form a mixed spinning solution.
[0041] (2) Put the mixed spinning solution into a liquid storage tank with a spinneret and spin it by high-voltage electrospinning to obtain superfine fibers; the spinning conditions are: the ambient temperature is 15°C, the relative humidity is 55%, the electrospinning voltage is 10kV, the distance between the spinneret and the coll...
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