Denier/superfine denier nylon master granule, preoriented yarn (POY) and draw textured yarn (DTY) stretch yarn and preparation method thereof
A fine denier nylon and ultra-fine denier technology, applied in the field of DTY elastic yarn, fine denier/ultra-fine denier nylon POY filament, can solve the problems of complexity and long process route, and achieve improved mixing performance, good performance, and increased tensile strength. The effect of tensile strength
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[0082] Example 1:
[0083] Preparation: Based on the weight of nylon 6 slices, weigh 0.2% of its weight of antioxidant (weight ratio of antioxidant 1010 and antioxidant 168), and 0.3% of dispersant (liquid with weight ratio of 1:1) Paraffin and PEG600), 0.8% metal salt MgSO 4 .
Example Embodiment
[0085] Example 2
[0086] Transfer the vacuum-dried nylon 6 chips and masterbatch (water content 700ppm) to the twin-screw conventional spinning machine. The nylon chip pump supply is 64g / min, and the masterbatch pump supply flow is 6.4g / min. The wire temperature is 285℃, the screw speed is 22r / min and the screw pressure is 90-100kg / cm 2 Next, the molten mixture melt is extruded by a screw (containing static and dynamic mixers), is metered into the spinneret assembly, filtered by 60-80 mesh sea sand, and then passed through the spinneret hole (the spinneret hole features: The diameter is 0.18mm and the aspect ratio is 3.8) extrusion. Then in the spinneret ring blowing device, the blowing air temperature is 32° C., the humidity is 50%, and the wind speed is 0.3 m / s. The cooled fiber is then bundled and oiled by an oil mist nozzle. The oiling rate is 1.6%. The oil used is a nylon oil double distilled water emulsion with a weight fraction of 12%. The oiled tow passes through the lo...
Example Embodiment
[0087] Example 3
[0088] The fine denier / super fine denier nylon POY filament is heated at a temperature of 163℃ through the yarn guide, the first roller to the first heating box; the POY filament is heated and cooled by the cooling plate, and then enters the false twister for twisting treatment (D The / Y ratio is 1.65, the material of the friction disc is ceramic, and the assembly form is 1-5-3); after cooling and false twisting, it enters the second roller for proper drafting (drawing ratio is 1.25), which increases the fiber strength at the same time. It can also reduce the elongation and fineness of the fiber; then enter the oil nozzle to oil, and then wind into a tube package (winding speed is 300m / min), that is, fine denier / superfine denier nylon DTY stretch yarn, its monofilament The fineness is 0.4 dtex, the breaking strength is 4.2 cN / dtex, the elongation is 28%, the boiling water shrinkage is 7.2%, and the crimp shrinkage is 43%.
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