A kind of anti-icing double-layer spinning film and preparation method thereof
A spinning film, double-layer technology, applied in the field of anti-icing double-layer spinning film and its preparation, can solve the problems of loss of super-hydrophobicity, damage of micro-nano structure, unsatisfactory performance of durable anti-icing effect, etc. Achieve the effect of solving the loss of superhydrophobicity, the method is simple and easy to operate, and it is convenient to replenish and replace
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Embodiment 1
[0027] Example 1: The preparation of PG-PET-PET / CHI anti-icing double-layer spinning film, the specific steps are:
[0028] (1) Weigh 1g of PET granules, put them in a vacuum-dried Erlenmeyer flask after vacuum drying at 60°C for 2 hours, add 1ml of dichloromethane and 4ml of trifluoroacetic acid, stir for 8 hours with magnetic force until PET is completely dissolved, and obtain PET Electrospinning precursor solution, let the precursor solution stand still until the bubbles in it completely disappear; weigh 0.7g PET particles and 0.3g CHI powder, vacuum dry at 60°C for 2 hours, and then put them in a vacuum-dried conical flask. Add 5ml of trifluoroacetic acid, and stir for 12 hours until the solute is completely dissolved to obtain a PET / CHI electrospinning precursor solution, which is left to stand until the bubbles in it completely disappear.
[0029] (2) Using aluminum foil as the receiving plate, the PET electrospinning precursor solution in step (1) is electrospun to ob...
Embodiment 2
[0038] Example 2: The preparation of EG-PET-PVA double-layer spinning membrane, concrete steps are as follows:
[0039] (1) Weigh 1g of PET granules, put them in a vacuum-dried Erlenmeyer flask after vacuum drying at 60°C for 2 hours, add 1ml of dichloromethane and 4ml of trifluoroacetic acid, stir for 8 hours with magnetic force until PET is completely dissolved, and obtain PET Electrospinning precursor solution, let the precursor solution stand still until the bubbles in it completely disappear; weigh 0.7g of PVA powder, add 10ml of deionized water to fully swell it, then heat and stir in a water bath at 80°C for 3h to dissolve, and cool to At room temperature, add 0.1wt% surfactant (SDBS) to the fully dissolved PVA solution, and then fully stir until uniform to obtain a PVA electrospinning precursor solution, and leave the precursor solution until the bubbles therein disappear completely.
[0040] (2) Using aluminum foil as the receiving plate, the PET electrospinning pre...
Embodiment 3
[0048] Example 3: The preparation of GL-PVDF-PEG double-layer spinning membrane, the specific steps are as follows:
[0049] (1) Weigh 15g of PVDF powder, put it in a vacuum-dried Erlenmeyer flask after vacuum drying at 60°C for 2h, add 85g of DMF, heat and stir at 80°C for 8h until PVDF is completely dissolved, and obtain PVDF electrospinning precursor solution, Let the precursor solution stand until the bubbles in it completely disappear; weigh 10g of PEG-2000 solid particles, dissolve them in distilled water to form a solution with a mass concentration of 40%, heat and stir in a water bath at 80°C for 2 hours until a uniform solution is formed, and obtain PEG electrostatic For spinning precursor solution, let the precursor solution stand until the air bubbles in it disappear completely.
[0050] (2) Aluminum foil is used as the receiving plate, and the PVDF electrospinning precursor solution in the step (1) is electrospun to obtain a superhydrophobic spinning film; the no...
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