Preparation method of nanometer calcium carbonate modified polyester fiber
A technology of nano-calcium carbonate and polyester fiber, applied in the direction of single-component polyester artificial filament, etc., can solve the problems that the performance and function of polyester fiber cannot fully meet people's requirements, and achieve the purpose of suppressing unstable factors, tow strips, etc. Uniform drying and smooth fabric
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[0033] Preparation process of nano-calcium carbonate modified slices:
[0034] First, on the continuous polyester equipment, use terephthalic acid (PTA) and ethylene glycol (EG) monomers to continuously and stably meter them into the slurry tank according to the molar ratio of PTA to EG of 1:1.25 Beating, adding nano-calcium carbonate and titanium dioxide in the beating kettle, wherein the mol ratio of the addition of nano-calcium carbonate to terephthalic acid is 5.2%, and the mol ratio of the addition of matting agent titanium dioxide to phthalic acid is 1.7%;
[0035] Then the above-mentioned slurry is continuously and stably transported to the esterification-I and esterification-II reaction kettles, and the stabilizer is continuously added to the esterification-II reaction kettles at the same time to control the esterification rate to about 98.0%, and the viscosity of the melt is controlled to 0.66 ; The esterified product is pumped to the polycondensation section, and the...
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