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

Active Publication Date: 2010-06-09
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is an essential difference between this invention and the one we described: First, it obtains a polyelectrolyte by stirring and drying an alkali metal salt or an alkylbenzene sulfonate and a hydrophilic polymer, and the metal salt includes only Alkali metal or alkylbenzene

Method used

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  • Denier/superfine denier nylon master granule, preoriented yarn (POY) and draw textured yarn (DTY) stretch yarn and preparation method thereof
  • Denier/superfine denier nylon master granule, preoriented yarn (POY) and draw textured yarn (DTY) stretch yarn and preparation method thereof
  • Denier/superfine denier nylon master granule, preoriented yarn (POY) and draw textured yarn (DTY) stretch yarn and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[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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Abstract

The invention belongs to the field of spinning materials. Firstly, the invention provides a fine denier/superfine denier nylon master granule prepared by proportionally adding a modifying agent, an antioxidant and a dispersant to nylon 6 sliced sheets according to the proportion, melting, mixing and extruding, and the modifying agent is a metallic salt which can take effect on nylon base; The fine denier/superfine denier nylon master granule and the nylon 6 sliced sheets are proportionally mixed, melted and spun, and the fine denier/superfine denier nylon POY is prepared by cooling, oiling, bundling and coiling; and the POY is textured to obtain the DTY. The invention provides the fine denier/superfine denier nylon POY of which the filament size is 0.3-0.8dtex, the filament size of the DTY is 0.25-0.70dtex, which fills the vacancy that the fine denier/superfine denier nylon POY and the DTY are produced by the conventional yarn-spinning process at home and abroad.

Description

technical field [0001] The invention belongs to the field of spinning materials, and in particular relates to a fine / ultrafine denier nylon masterbatch and a preparation method thereof, and fine / ultrafine denier nylon POY filaments and DTY elastic yarns prepared therefrom. Background technique [0002] At present, synthetic fibers generally include polyester (polyethylene terephthalate), nylon (polyamide), polypropylene (polypropylene), spandex (polyurethane), acrylic (polyacrylonitrile) and the like. These fibers have different properties and thus different uses. But at present generally take fabric, because its fiber is thicker, feel rough, softness is poor, air permeability is poor, water absorption is poor, easy to pilling. With the improvement of people's living standards, the requirements for textiles are getting higher and higher. To solve these problems, meet people's different requirements, and develop different types, research on new and functional fibers is in f...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08K3/30C08K3/24C08K3/34D01F6/90D01D5/08D02G1/20
Inventor 来国桥郝超伟马清芳蒋剑雄徐怡庄陆达天
Owner HANGZHOU NORMAL UNIVERSITY
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