Method for preparing hollow three-dimensional crimped polyphenylene sulfide staple fibers
A polyphenylene sulfide and three-dimensional crimping technology is applied in the preparation of hollow polyphenylene sulfide short fibers and the preparation of hollow three-dimensional crimped polyphenylene sulfide short fibers, and achieves the effects of superior performance, good operating performance and high hollow ratio.
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[0015] Example 1
[0016] The preparation method of a hollow three-dimensional crimped polyphenylene sulfide staple fiber of this embodiment adopts two components, wherein the first component is linear polyphenylene sulfide with a melt index of 100g / 10min, and the second component is Linear polyphenylene sulfide with a melt index of 120g / 10min; the two components pass through a twin-screw compound spinning device after drying at 180°C for 8 hours. The temperature of each zone of the twin-screw compound spinning device is set to 280 ~320℃, after melting, it will be sent into the spinning box by metering pump, and melt spinning at 325℃; figure 1 As shown, the spinneret hole of the spinneret 1 of the present invention is a ring composed of two concentric circles, and there are two gaps on the ring; the radius r of the inner ring 3 of the spinneret hole is 0.3mm, and the outer ring 2 The radius R is 0.8mm, the gap between the gaps a is 0.10mm, and the included angle θ of the circula...
Example Embodiment
[0017] Example 2
[0018] The preparation method of a hollow three-dimensional crimped polyphenylene sulfide staple fiber of this embodiment adopts two components, wherein the first component is linear polyphenylene sulfide with a melt index of 100g / 10min, and the second component is Linear polyphenylene sulfide with a melt index of 150g / 10min; the two components pass through a twin-screw compound spinning device after drying at 180°C for 8 hours. The temperature of each zone of the twin-screw compound spinning device is set to 280 ~320℃, after melting, it will be sent into the spinning box by metering pump, and melt spinning at 325℃; figure 1 As shown, the spinneret hole of the spinneret 1 of the present invention is a ring composed of two concentric circles, and there are two gaps on the ring; the radius r of the inner ring 3 of the spinneret hole is 0.3mm, and the outer ring 2 The radius R is 0.8mm, the gap between the gaps a is 0.10mm, and the included angle θ of the circula...
Example Embodiment
[0019] Example 3
[0020] The preparation method of a hollow three-dimensional crimped polyphenylene sulfide staple fiber of this embodiment adopts two components, wherein the first component is linear polyphenylene sulfide with a melt index of 50g / 10min, and the second component is Linear polyphenylene sulfide with a melt index of 60g / 10min; the two components pass through a twin-screw compound spinning device after drying at 180°C for 8 hours. The temperature of each zone of the twin-screw compound spinning device is set to 280 ~320℃, after melting, it will be sent into the spinning box by metering pump, and melt spinning at 325℃; figure 1 As shown, the spinneret hole of the spinneret 1 of the present invention is a ring composed of two concentric circles, and there are two gaps on the ring; the radius r of the inner ring 3 of the spinneret hole is 0.3mm, and the outer ring 2 The radius R is 0.8mm, the gap distance a is 0.10mm, the included angle θ of the circular arc on one s...
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