A kind of low chromatic aberration polyester ultra-soft ultra-fine yarn and preparation method thereof
A technology of ultra-fine yarn and polyester, applied in the direction of single-component polyester rayon, dyeing method, melt spinning method, etc., can solve the problems of dye color spots, hindering liquid flow circulation, spots and other problems, and achieve soft luster Effect
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Embodiment 1
[0070] A method for preparing low-chromatic-difference polyester ultra-soft ultra-fine filaments, the main process comprising:
[0071] (1) Preparation of catalyst magnesium ethylene glycol:
[0072] Add ethylene glycol into the single-chamber electrolytic cell, the supporting electrolyte is magnesium chloride, the metal magnesium block is the anode, and the cathode is graphite; connect direct current, the initial voltage is 6V, the cathode current density is 150mA, and electrolyze for 10 hours at 50°C. Take out the electrode to obtain a white suspension; filter under reduced pressure, wash the white solid with absolute ethanol, and dry to obtain magnesium ethylene glycol;
[0073] (2) Preparation of polyester, including esterification reaction and polycondensation reaction:
[0074] Esterification reaction:
[0075] Use terephthalic acid and ethylene glycol as raw materials, the molar ratio of ethylene glycol to terephthalic acid is 1.2:1, add anti-ether agent sodium acetat...
Embodiment 2
[0092] A method for preparing low-chromatic-difference polyester ultra-soft ultra-fine filaments, the main process comprising:
[0093] (1) Preparation of catalyst magnesium ethylene glycol:
[0094] Add ethylene glycol into the single-chamber electrolytic cell, the supporting electrolyte is magnesium chloride, the metal magnesium block is the anode, and the cathode is graphite; connect direct current, the initial voltage is 10V, the cathode current density is 200mA, electrolyze at 60°C for 12 hours, after the electrolysis ends Take out the electrode to obtain a white suspension; filter under reduced pressure, wash the white solid with absolute ethanol, and dry to obtain magnesium ethylene glycol;
[0095] (2) Preparation of polyester, including esterification reaction and polycondensation reaction:
[0096] Esterification reaction:
[0097] Using terephthalic acid and ethylene glycol as raw materials, the molar ratio of ethylene glycol to terephthalic acid is 2.0:1, adding an...
Embodiment 3
[0114] A method for preparing low-chromatic-difference polyester ultra-soft ultra-fine filaments, the main process comprising:
[0115] (1) Preparation of catalyst magnesium ethylene glycol:
[0116] Add ethylene glycol into the single-chamber electrolytic cell, the supporting electrolyte is magnesium chloride, the metal magnesium block is the anode, and the cathode is graphite; connect direct current, the initial voltage is 7V, the cathode current density is 160mA, and electrolyze for 11 hours at 55°C. Take out the electrode to obtain a white suspension; filter under reduced pressure, wash the white solid with absolute ethanol, and dry to obtain magnesium ethylene glycol;
[0117] (2) Preparation of polyester, including esterification reaction and polycondensation reaction:
[0118] Esterification reaction:
[0119] Using terephthalic acid and ethylene glycol as raw materials, the molar ratio of ethylene glycol to terephthalic acid is 1.5:1, adding anti-ether agent sodium a...
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