Fine denier or ultra-fine denier nylon fibre and production method thereof
A technology of nylon fiber and production method, which is applied in the field of spinning materials and achieves the effects of simple process, high strength and good mechanical properties
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Embodiment 1
[0044] The ratio of the following table 1 was prepared using a twin-screw extruder to prepare KAl(SO 4 ) 2 Additive masterbatch, where the temperatures of each zone of the extruder are: 260°C, 305°C, 290°C and 290°C.
[0045] Table 1: Containing KAl(SO 4 ) 2 additive masterbatch formula
[0046] ingredients
[0047] The obtained KAl(SO 4 ) 2 The additive masterbatch and nylon 6 chips are dried in a vacuum oven to remove moisture and small molecular substances. The drying temperature is between 90-100°C, and the drying time is 24-48 hours. Then KAl(SO 4 ) 2 The additive masterbatch and nylon 6 chips are mixed at a weight ratio of 5:1000 and melt-spun. The temperatures of the melt in each zone of the screw extruder are 250°C, 270°C, 270°C, and 275°C. The spinning temperature It is 250°C. The spinneret hole diameter used is 0.35mm, the length is 0.7mm, and the winding speed is 1700m / min. It can obtain fine-denier nylon fibers with a winding fineness of 0.79 de...
Embodiment 2
[0049] Prepare fine denier or superfine denier nylon fiber according to the method for embodiment 1, difference is, use twin-screw extruder to prepare NaCl and LaCl according to the ratio of following table 2 3 The additive masterbatch of the mixture (mixing weight ratio 1:1), the weight ratio of the additive masterbatch and nylon 6 chips is 1:1000, the spinning temperature is 255°C, and the winding speed is 1400m / min. 1.20 times hot drawing on the drawing machine. A fine-denier nylon fiber with a fineness of 0.70 denier was obtained. In the mechanical property test, the fiber filament strength reaches 4.0cN / dtex, and the elongation at break is 19%.
[0050] Table 2: NaCl and LaCl 3 Additive Masterbatch Formulation for Mixtures
[0051] ingredients
Embodiment 3
[0053] Prepare fine denier or superfine denier nylon fiber according to the method for embodiment 1, difference is, use twin-screw extruder to prepare NaBr and CaCl according to the ratio of following table 3 2 The additive masterbatch of the mixture, the weight ratio of the additive masterbatch to nylon 6 chips is 5:100, the spinning temperature is 255° C., and the winding speed is 4000 m / min. A fine-denier nylon fiber with a fineness of 0.40 denier was obtained. In the mechanical property test, the fiber filament strength reaches 3.9cN / dte, and the elongation at break is 24%.
[0054] Table 3: NaBr and CaCl 2 Additive Masterbatch Formulation for Mixtures
[0055] ingredients
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