Polyethylene terephthalate polymer, yarn comprising same, and method for manufacturing car mat
A polyethylene terephthalate yarn, polyethylene terephthalate technology, which is applied in the field of yarn and automobile pads, can solve the problems of low wear resistance and the like, and achieves improved wear resistance, The effect of increasing density
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Embodiment 1
[0064] A slurry prepared by mixing 50 parts by weight of ethylene glycol with respect to 100 parts by weight of terephthalic acid was introduced into the esterification reactor, and pressurized at 250° C. for 4 hours under a pressure of 0.5 Torr to make the water Flow out of the reactor for esterification to produce bis(2-hydroxyethyl) terephthalate. In this case, 300 ppm of phosphorus-based heat stabilizer was added at the end of the esterification reaction. Meanwhile, 0.1% by weight of 90% barium sulfate particles having an average particle diameter of 1.4 μm and 10% of barium sulfate particles having a particle diameter of 4.2 μm were added to the polymer after the esterification reaction. Thereafter, 300 ppm antimony catalyst was added as a polymerization catalyst at the initial stage of the polycondensation reaction, the temperature was raised from 250° C. to 285° C. at 60° C. / hour, and the pressure was lowered to 0.5 Torr to carry out the polycondensation reaction.
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Embodiment 2～4
[0068] Polymers, yarns, and car mats were prepared in the same manner as in Example 1, except that the intrinsic viscosity of the polyethylene terephthalate polymer and the denier of the yarns were changed as shown in Table 1.
Embodiment 5
[0070] Polymer, yarn and car mat were prepared in the same manner as in Example 1, except that the intrinsic viscosity of the polyethylene terephthalate polymer and the denier of the yarn were changed as shown in Table 1, And 0.1% by weight of 90% of silica particles with an average particle diameter of 1.4 μm and 10% of silica particles with an average particle diameter of 4.2 μm was introduced in the manufacture of polyethylene terephthalate polymer instead of barium sulfate.
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