Preparation method of modified polyester chip, polyester chip and polyester fiber
A technology of modified polyester chips, applied in the field of preparation of polyester chips and polyester fibers, modified polyester chips, can solve the problems of tourmaline superfine powder agglomeration, etc., to achieve environmental and human benefits, long-lasting effect , the effect of low viscosity
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[0040] Example 1
[0041] Add 100 parts of purified terephthalic acid, 1.3 parts of polyhydroxy-modified nano tourmaline 1 and 110 parts of ethylene glycol into a container with a stir bar, thermometer and diverter, and carry out the esterification reaction at 250-255°C. During the reaction process, the generated water was continuously removed, the viscosity of the reaction intermediate was measured to monitor the esterification rate of the reaction, and the reaction was performed until the esterification rate reached 92% or more, and the temperature was lowered to obtain the esterification intermediate 1.
[0042] Add 100 parts of esterification intermediate 1 and 320 ppm of antimony trioxide into a container with a stir bar, a thermometer and a vacuum pump. Perform polycondensation reaction at a negative pressure of <6000 Pa and at 267°C for 1.5 hours, and then adjust the negative pressure to 70Pa, react at 270°C for 4 hours, cool down, cast tape, cool, and pellet to obtain modif...
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[0043] Example 2
[0044] Add 100 parts of purified terephthalic acid, 3 parts of polyhydroxy-modified nano tourmaline 2 and 120 parts of ethylene glycol into a container with a stir bar, thermometer and diverter, and carry out the esterification reaction at 255-260°C. During the reaction process, the generated water is continuously removed, the viscosity of the reaction intermediate is measured to monitor the esterification rate of the reaction, the reaction is until the esterification rate is at least 92%, and the temperature is lowered to obtain the esterification intermediate 2.
[0045] Add 100 parts of esterification intermediate 2 and 350ppm antimony trioxide into a container with a stir bar, a thermometer and a vacuum pump, under a negative pressure of <6000Pa, and carry out the polycondensation reaction at 270°C for 1.5 hours, and then adjust the negative pressure to 66Pa , Reacting at 275°C for 3 hours, cooling, casting, cooling, and pelletizing to obtain modified polyest...
Example Embodiment
[0046] Example 3
[0047] Add 100 parts of purified terephthalic acid, 7 parts of polyhydroxy-modified nano tourmaline 1 and 140 parts of ethylene glycol into a container with a stir bar, thermometer and diverter, and carry out the esterification reaction at 270-275°C. During the reaction process, the generated water was continuously removed, the viscosity of the reaction intermediate was measured to monitor the esterification rate of the reaction, and the reaction was performed until the esterification rate was at least 92%, and the temperature was lowered to obtain the esterification intermediate 3.
[0048] Add 100 parts of esterification intermediate 3 and 380ppm antimony trioxide into a container with a stir bar, a thermometer and a vacuum pump, under a negative pressure of <6000Pa, and carry out the polycondensation reaction at 280°C for 1 hour, and then adjust the negative pressure to 60Pa. React at 285°C for 2 hours, cool down, cast tape, cool, and pellet to obtain modified...
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