A kind of polyester fdy hot-melt fiber and preparation method thereof
A hot-melt fiber and polyester technology, which is applied in the field of polyester fiber, can solve the problems of reducing the effective content of catalyst, increasing the content of antimony in polyester, and corrosion of polymerization equipment, etc., and achieves a technology suitable for popularization and use, low melting point, and improved quality. Effect
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Embodiment 1
[0044] A kind of preparation method of polyester FDY hot-melt fiber, concrete process is as follows:
[0045] (1) Esterification reaction;
[0046] After preparing terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, calcium sulfonate isophthalate, macromolecular modulus modifier and zinc oxide into a slurry, the temperature is 235 ° C and the pressure is React under the nitrogen atmosphere of 0.25MPa, reach 90% of theoretical value to water distillation amount; Wherein, the mol ratio of terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol and calcium sulfonate isophthalate is 1:0.4:1.9:0.1:0.02; when the macromolecular modulus regulator is polybutylene adipate with a number average molecular weight of 550, its mass addition is 3% of the phthalic acid mass addition; The mass addition is 0.01% of the mass addition of phthalic acid;
[0047] (2) polycondensation reaction;
[0048] Add antimony trioxide and triphenyl phosphate to the syst...
Embodiment 2
[0062] A kind of preparation method of polyester FDY hot-melt fiber, concrete process is as follows:
[0063] (1) Esterification reaction;
[0064] After preparing terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, zinc isophthalic acid sulfonate, macromolecular modulus regulator and zinc oxide into a slurry, the temperature is 230 ° C and the pressure is Reaction under the nitrogen atmosphere of 0.26MPa, reach 91% of theoretical value to water distillation amount; Wherein, the mol ratio of terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol and isophthalic acid zinc sulfonate is 1:0.5:1.8:0.2:0.01; when the macromolecular modulus regulator is polytrimethylene adipate with a number average molecular weight of 500, its mass addition is 4% of the phthalic acid mass addition; the mass addition of zinc oxide The amount is 0.012% of the mass addition of phthalic acid;
[0065] (2) polycondensation reaction;
[0066] Add ethylene glycol a...
Embodiment 3
[0071] A kind of preparation method of polyester FDY hot-melt fiber, concrete process is as follows:
[0072] (1) Esterification reaction;
[0073] After preparing terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol, magnesium sulfonate isophthalate, macromolecular modulus regulator and zinc oxide into a slurry, the temperature is 238 ° C and the pressure is React under the nitrogen atmosphere of 0.28MPa, reach 90% of theoretical value to water distillation amount; Wherein, the mol ratio of terephthalic acid, isophthalic acid, ethylene glycol, diethylene glycol and magnesium sulfonate isophthalate is 1:0.4:1.9:0.2:0.02; when the macromolecular modulus regulator is polyethylene adipate with a number average molecular weight of 600, its mass addition is 3% of the phthalic acid mass addition; The mass addition is 0.011% of the mass addition of phthalic acid;
[0074] (2) polycondensation reaction;
[0075] Add antimony acetate and trimethyl phosphite to the...
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