Flame-resistant polyester fiber and preparation method thereof
A technology of flame-retardant polyester and fiber, which is applied in the manufacture of fire-resistant flame-retardant filaments, single-component polyester artificial filaments, and single-component copolyester artificial filaments, etc. It can solve the problems of anti-melt droplet and other difficulties , to achieve the effect of improving anti-droplet performance, improving flame retardant performance and maintaining excellent performance
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Embodiment 1
[0055] A preparation method of flame-retardant polyester fiber, the main process is:
[0056] 1) preparation of catalyst magnesium ethylene glycol:
[0057] 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;
[0058] (2) Preparation of flame retardant:
[0059] Mix 2-carboxyethylphenylphosphinic acid (CEPPA) and ethylene glycol at a molar ratio of 1:2, and react the mixture at 100°C for 30min to synthesize ethylene glycol 2-carboxyethylphenylphosphinic acid (CEPPA -EG).
[0060] (3) Preparation of polyester, including esterification reaction and polyc...
Embodiment 2
[0074] A preparation method of flame-retardant polyester fiber, the main process is:
[0075] (1) Preparation of catalyst magnesium ethylene glycol:
[0076] 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;
[0077] (2) Preparation of flame retardant:
[0078] Mix 2-carboxyethylphenylphosphinic acid (CEPPA) and ethylene glycol at a molar ratio of 1:3, and react the mixture at 120°C for 60min to synthesize ethylene glycol 2-carboxyethylphenylphosphinic acid (CEPPA -EG).
[0079] (3) Preparation of polyester, including esterif...
Embodiment 3
[0094] A preparation method of flame-retardant polyester fiber, the main process is:
[0095] (1) Preparation of catalyst magnesium ethylene glycol:
[0096] 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 8V, 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;
[0097] (2) Preparation of flame retardant:
[0098] Mix 2-carboxyethylphenylphosphinic acid (CEPPA) and ethylene glycol at a molar ratio of 1:2, and react the mixture at 105°C for 40min to synthesize ethylene glycol 2-carboxyethylphenylphosphinic acid (CEPPA -EG).
[0099] (3) Preparation of polyester, including esterification reaction and poly...
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