A preparing method of a polyethylene fine-denier moisture-conducting fiber
A polyethylene and wet fiber technology, applied in the direction of single-component polyolefin rayon, dry spinning method, stretch spinning method, etc. Water-based, poor wearing comfort and other issues, to achieve the effect of improving the moisture-wicking effect, good textile processing performance, and improved wearing performance
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[0019] Example 1: A production process of polyethylene superfine fiber:
[0020] The swelling suspension of polyethylene powder in decalin is prepared, and the mass ratio of ultra-high molecular weight polyethylene and decalin for fibers with a molecular weight of 4 million to 8 million is 1:10, which is extruded and sheared by a twin-screw extruder , Fully dissolved into polyethylene solution, the temperature of each zone of the screw is 90~180℃; the polyethylene solution is sprayed through the spinneret, the tow is removed by the hot air circulation system to remove the decalin, the hot air circulation system is a closed heating chamber with nitrogen circulation, Air temperature 145℃, air volume 135 m 3 / h; After pre-stretching, the stretching ratio is 3.0, and it is heat-stretched in one or more steps. The temperature of the multi-stage hot-drawing hot box is 140-150℃, and the total hot-drawing ratio is 5.0; One or more relaxation steps, the relaxation temperature is 146°C, an...
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[0023] Example 2: A production process of polyethylene superfine fiber:
[0024] The swelling suspension of polyethylene powder in decalin is prepared, and the mass ratio of ultra-high molecular weight polyethylene and decalin for fibers with a molecular weight of 4 million to 8 million is 1:20, which is extruded and sheared by a twin-screw extruder , The polyethylene material fully unwraps the polyethylene solution, the temperature of each zone of the screw is 90~180℃; the polyethylene solution spinneret spins, the tow is removed by the hot air circulation system to remove the decalin, the hot air circulation system is a closed heating chamber with nitrogen circulation Room, air temperature 70℃, air volume 160 m 3 / h; After pre-stretching, the stretching ratio is 1.0, and it is heat-stretched in one or more steps. The temperature of the multi-stage hot-drawing hot box is 120-140℃, and the total hot-drawing ratio is 8.0; One or more relaxation steps, the relaxation temperature is...
Example Embodiment
[0027] Example 3: A production process of polyethylene superfine fiber:
[0028] The swelling suspension of polyethylene powder in decalin is prepared, and the mass ratio of ultra-high molecular weight polyethylene and decalin for fibers with a molecular weight of 4 million to 8 million is 1:10, which is extruded and sheared by a twin-screw extruder , The polyethylene material fully unwraps the polyethylene solution, the temperature of each zone of the screw is 90~180℃; the polyethylene solution is sprayed through the spinneret, the tow is removed by the hot air circulation system to remove the decalin, the hot air circulation system is closed heating with nitrogen circulation Chamber, air temperature 110℃, air volume 90 m 3 / h; After pre-stretching, the stretching ratio is 4.0, and it is heat-stretched in one or more steps. The temperature of the multi-stage hot-drawing hot box is 90-120℃, and the total hot-drawing ratio is 10.0; One or more relaxation steps, a relaxation temper...
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