A kind of edible flame-retardant polyester fiber and its preparation method
A technology of flame-retardant polyester and fiber, applied in the field of polyester fiber, to achieve the effect of increasing activation energy, increasing thermal degradation temperature, and reducing droplet
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Embodiment 1
[0053] A preparation method for taking flame-retardant polyester fiber, the specific steps are as follows:
[0054] (1) Preparation of modified polyester:
[0055] (1.1) Esterification reaction;
[0056] Terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid and flame retardant 2-hydroxyethylphenylphosphorous acid with a molar ratio of 1:1.2:0.06:0.03 were made into a slurry, and the catalyst (three Antimony oxide), stabilizer (triphenyl phosphate) and zinc chloride are mixed evenly, the addition of catalyst and stabilizer is respectively 0.02wt% and 0.01wt% of terephthalic acid addition, the addition of zinc chloride It is 0.9mol% of the amount of terephthalic acid added; then pressurize in a nitrogen atmosphere to carry out the esterification reaction, the pressurized pressure is 0.2MPa, the temperature of the esterification reaction is 252 ° C, and the termination condition of the esterification reaction is: esterification The water distillation amount in the r...
Embodiment 2
[0072] A preparation method for taking flame-retardant polyester fiber, the specific steps are as follows:
[0073] (1) Preparation of modified polyester:
[0074] (1.1) Esterification reaction;
[0075] Terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid and flame retardant 2-hydroxyethylphenylphosphorous acid with a molar ratio of 1:1.2:0.07:0.03 were made into slurry, and catalyst (three Antimony oxide), stabilizer (triphenyl phosphate) and zinc chloride are mixed uniformly, the addition of catalyst and stabilizer is respectively 0.01wt% and 0.02wt% of terephthalic acid addition, the addition of zinc chloride It is 1mol% of the amount of terephthalic acid added; then pressurize the esterification reaction in a nitrogen atmosphere, the pressurized pressure is 0.1MPa, the temperature of the esterification reaction is 250°C, and the termination condition of the esterification reaction is: esterification reaction The amount of water distilled in reaches 90% of t...
Embodiment 3
[0091] A preparation method for taking flame-retardant polyester fiber, the specific steps are as follows:
[0092] (1) Preparation of modified polyester:
[0093] (1.1) Esterification reaction;
[0094] Terephthalic acid, ethylene glycol, 2,6-pyridinedicarboxylic acid and flame retardant 2-hydroxyethylphenylphosphorous acid with a molar ratio of 1:1.2:0.08:0.03 were made into slurry, and catalyst (three Antimony oxide), stabilizer (trimethyl phosphate) and zinc chloride are mixed evenly, the addition of catalyst and stabilizer is respectively 0.03wt% and 0.02wt% of terephthalic acid addition, the addition of zinc chloride It is 1.1mol% of the amount of terephthalic acid added; then carry out the esterification reaction under pressure in a nitrogen atmosphere, the pressurized pressure is 0.2MPa, the temperature of the esterification reaction is 254°C, and the termination condition of the esterification reaction is: esterification The water distillation amount in the reaction...
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