Sheath-core bicomponent fiber and functions thereof
A composite fiber, skin-core technology, applied in the direction of conjugated synthetic polymer rayon, etc., can solve the problem that the water absorption performance cannot meet the requirements of customers, and achieve the effect of good moisture absorption and quick drying performance.
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Embodiment 1
[0024] Dry polyethylene terephthalate (PET) chips and alkali-soluble polyester COPET in a vacuum transfer dryer until the water content is below 50ppm, and send them into the screw through the silo for melting. The sheath-core composite fiber is made of two Screws, controlling their respective temperatures, respectively melt two kinds of raw materials of moisture-absorbing and quick-drying polyester (A: PET+COPET B: PET) that constitute the skin (A) and core (B), A / B=10(5 / 5) / 90 (mass ratio), transported to the spinning box through their respective melt pipelines, and then the melt is quantitatively sent to the sheath-core composite spinning assembly by the metering pump for extrusion, cooling, oiling, and winding Finally, the raw silk of the sheath-core composite fiber is obtained, and the finished sheath-core fiber can be obtained after the raw silk is stretched and shaped. Among them, the spinning temperature is 285°C, the spinning speed is 2500m / min, and the raw silk varie...
Embodiment 2
[0029] Adopt the same spinning temperature, spinning speed, precursor kind, processing method, processing temperature, processing ratio, processing speed as embodiment 1, but change the composite ratio of two kinds of polymers and change by 10(5 / 5) / 90 It is 20(5 / 15) / 80. See Table 1 for specific values.
Embodiment 3
[0031] Adopt the same spinning temperature, spinning speed, precursor kind, processing method, processing temperature, processing ratio, processing speed as embodiment 1, but change the composite ratio of two kinds of polymers and change by 10(5 / 5) / 90 is 30(5 / 25) / 70. See Table 1 for specific values.
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