Antistatic polylactic acid fiber blended yarn and preparation method thereof
A technology of polylactic acid fiber and blended yarn, which is applied in the direction of melt spinning, yarn, textile and paper making, and achieves the effect of broad application prospect and good antistatic performance
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[0036] The present invention also provides a kind of preparation method of antistatic polylactic acid fiber blended yarn, preferably comprises the following steps:
[0037] (1): Take polylactic acid and polypropylene carbonate by weight, add together in the extruder to melt and blend and extrude, then melt-spin the extruded product through a spinning machine to obtain polylactic acid fibers;
[0038] (2): the polylactic acid fiber obtained in step (1) is opened with the ramie fiber and the conductive fiber weighed according to the formula, and obtains a fiber mixture;
[0039] (3): carding the fiber mixture obtained in step (2), and spinning it into tops or rovings;
[0040] (4): Twisting the top or roving spun into step (3) again to obtain the target product.
[0041] In a preferred embodiment of the present invention, in step (1), the temperatures of each section of the extruder are respectively: feeding section 160°C, compression section 180°C, homogenization section 175°C...
Embodiment 1
[0052] (1) 70 parts of polylactic acid and 20 parts of polypropylene carbonate were melt blended and extruded together, and the temperature of each section was controlled to be 160°C in the feeding section, 180°C in the compression section, and 175°C in the homogenization section, and the screw speed was 55r / min. Then melt-spin the obtained product through a spinning machine at 180°C to obtain polylactic acid fibers, and the winding speed of the melt-spinning is 2500m / min;
[0053] (2) Get the polylactic acid fiber that step (1) makes, 40 parts of ramie fibers and 10 parts of conductive fibers, each constituent fiber is opened, and then forms a fiber mixture;
[0054] (3) Carding the fiber mixture, then spinning the fiber mixture into tops or directly into roving;
[0055] (4) Twisting the obtained top or roving to make its twist at 500T / M, forming such as figure 1 Yarn blends shown.
[0056] The clothing woven from the antistatic polylactic acid fiber blended yarn prepared ...
Embodiment 2
[0058] (1) Melt, blend and extrude 50 parts of polylactic acid and 8 parts of polypropylene carbonate, control the temperature of each section to be 160°C in the feeding section, 180°C in the compression section, 175°C in the homogenization section, and the screw speed is 55r / min. Then melt-spin the obtained product through a spinning machine at 180°C to obtain polylactic acid fibers, and the winding speed of the melt-spinning is 2500m / min;
[0059] (2) Get the polylactic acid fiber that step (1) makes, 10 parts of ramie fibers and 5 parts of conductive fibers, each constituent fiber is opened, and then forms a fiber mixture;
[0060] (3) Carding the fiber mixture, then spinning the fiber mixture into tops or directly into roving;
[0061] (4) Twisting the obtained top or roving to form a blended yarn with a twist of 500T / M.
[0062] The clothing woven from the antistatic polylactic acid fiber blended yarn obtained in Example 2 was tested, and according to GB / T12703-1991 "Tex...
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