Preparation method of luminous polyethylene terephthalate
A technology of polyethylene terephthalate and ethylene glycol, which is applied in the field of preparation of polyethylene terephthalate composite materials, can solve the problem of difficulty in ensuring uniform dispersion of luminescent materials, the breakage rate of luminescent fibers and the Problems such as poor strength, to achieve the effect of good spinnability, long-lasting luminous effect, and uniform dispersion
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[0021] Example 1
[0022] A 5L stainless steel reactor equipped with a nitrogen inlet, a condensate outlet and a stirrer was charged with 1000 grams of purified terephthalic acid (PTA), 250 grams of ethylene glycol (EG), and 280 grams of nano-strontium aluminate-ethylene glycol The sol (including 19 grams of strontium aluminate, 260 grams of ethylene glycol, and 1 gram of polyethylene glycol) has an esterification reaction temperature of 250° C., a reaction pressure of 0.26 MPa, and a reaction time of 110 minutes. The product of the above esterification process is then subjected to a polycondensation process to obtain a luminous PET composite material. The polycondensation reaction temperature in the low vacuum stage is 260°C, the pressure is gradually reduced from normal pressure to 1000 Pa, the reaction time is 30 minutes, the polycondensation reaction temperature in the high vacuum stage is 275°C, the vacuum degree of the reaction system is 55 Pa, and the reaction time is 82 m...
Example Embodiment
[0024] Example 2
[0025] A 5L stainless steel reactor equipped with a nitrogen inlet, a condensate outlet and a stirrer was charged with 1000 grams of purified terephthalic acid (PTA), 300 grams of ethylene glycol (EG), and 230 grams of trivalent europium activated yttrium aluminum pomegranate Stone-glycol sol (18 g of yttrium aluminum garnet activated by trivalent europium, 210 g of ethylene glycol, and 2 g of polyvinyl alcohol), the esterification temperature is 245℃, the reaction pressure is 0.25MPa, and the reaction time For 120 minutes. The product of the above esterification process is then subjected to a polycondensation process to obtain a luminous PET composite material. The polycondensation reaction temperature in the low vacuum stage is 255°C, the pressure is gradually reduced from normal pressure to 1000 Pa, the reaction time is 25 minutes, the polycondensation reaction temperature in the high vacuum stage is 280°C, the vacuum degree of the reaction system is 50 Pa,...
Example Embodiment
[0027] Example 3
[0028] In a 5L stainless steel reactor equipped with a nitrogen inlet, a condensate outlet and a stirrer, 1000 grams of purified terephthalic acid (PTA), 250 grams of ethylene glycol (EG), and 280 grams of nano-divalent europium-activated chlorophosphoric acid are added Strontium-glycol sol (19.5 g of strontium chlorophosphate activated by nano-divalent europium, 260 g of ethylene glycol, and 0.5 g of polyethylene glycol), the esterification temperature is 250°C, the reaction pressure is 0.25MPa, and the reaction The time is 90 minutes. The product of the above esterification process is then subjected to a polycondensation process to obtain a luminous PET composite material. Among them, the polycondensation reaction temperature in the low vacuum stage is 200-240°C, the pressure is gradually reduced from normal pressure to 1000 Pa, the reaction time is 30 minutes, the polycondensation reaction temperature in the high vacuum stage is 285°C, the vacuum degree of ...
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