Two-component split type composite FDY fiber and preparation method thereof
A composite fiber and two-component technology, applied in the field of fiber spinning, can solve the problems of poor dyeability and harsh dyeing conditions of PET
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Embodiment 1
[0042] 1. Preparation of double-group lobed FDY fibers
[0043] Take 78 parts of polytrimethylene terephthalate chips and dry them at 140°C, put them into a polyester spinning screw extruder and melt them at 275°C; take 22 parts of polycaprolactam chips, dry them at 90°C and put them into polyamide spinning The screw extruder melts at 270°C;
[0044] The melt of the two screw extruders was passed through as figure 2 The 8-split spinneret is extruded to obtain as-spun fibers. The following examples all use this spinneret to extrude to obtain 8-split as-spun fibers. The lobes between the fiber skeletons are composed of polycaprolactam, and the fiber lobes are polytrimethylene terephthalate;
[0045] Then, the as-spun fiber is cooled and shaped by ring blowing through a cooling blowing device, the cooling temperature is 23° C., and then oiled by an oil tanker on both sides. The oil agent is 10wt% siloxane emulsion, and the oil content of the fiber after oiling is 1.1 %, then ...
Embodiment 2 to Embodiment 4
[0049] 1. Preparation of double-group split-sheet FDY fibers
[0050] The concrete process parameter of this part operation among above-mentioned three embodiments sees Table 2:
[0051] Measure the performance of two-group split-sheet FDY fibers prepared in Examples 2 to 5, which are listed in Table 1.
[0052] 2. Preparation of two-component microfiber fabric
[0053] The process of this part of the above-mentioned three embodiments is all the same as that of Embodiment 1.
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