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

A technology of ultra-fine denier and elastic yarn, which is applied in the field of DTY elastic yarn and fine denier/ultra-fine denier nylon POY filament. It can solve the problems of long and complicated process routes, achieve good performance, improve mixing performance, and increase stretching. The effect of intensity

Active Publication Date: 2011-10-26
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 sulfonate, and it is mixed with nylon 6 in the form of polyelectrolyte to make composite materials; secondly, this method is only used in the field of antistatic fibers, not fine / ultrafine denier fibers thirdly, this method has a relatively long process route and is relatively complicated

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

Embodiment 1

[0083] Getting the raw materials ready: by weight of nylon 6 slices, take by weight 0.2% antioxidant (mass ratio is 1: 1 antioxidant 1010 and antioxidant 168), 0.3% dispersant (mass ratio is 1: 1 liquid Paraffin and PEG600), 0.8% metal salt MgSO 4 .

Embodiment 2

[0086] Nylon 6 chip after vacuum drying, masterbatch (moisture content 700ppm) is conveyed in twin-screw conventional spinning machine, and nylon chip pump supply rate is 64g / min, and masterbatch pump supply flow rate is 6.4g / min, in melt spinning The wire temperature is 285°C, the screw speed is 22r / min and the screw pressure is 90-100kg / cm 2 Next, the molten mixture is extruded by a screw (including static and dynamic mixers), pumped into the spinneret assembly by metering, filtered through 60-80 mesh sea sand, and then passed through the spinneret hole (the spinneret hole features: Diameter 0.18mm, aspect ratio 3.8) extrusion. Then, in the spinneret ring air blowing device, the temperature of the blown air is 32° C., the humidity is 50%, and the wind speed is 0.3 m / s. The cooled fibers are then clustered and oiled through the oil mist nozzle. The oiling rate is 1.6%. The oil used is a double-distilled water emulsion of nylon oil with a weight fraction of 12%. The rabbit s...

Embodiment 3

[0088] Fine denier / ultrafine denier nylon POY filament passes through the yarn guide, the first roller to the first hot box and is heated at a temperature of 163°C; after the POY filament is heated, it is 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 (the drafting ratio is 1.25), while increasing the fiber strength, It can also reduce the elongation and fineness of the fiber; then enter the oil nozzle for oiling, and then wind it into a drum package (winding speed is 300m / min), that is, fine denier / ultrafine denier nylon DTY stretch yarn, and its monofilament The fineness is 0.4dtex, the breaking strength is 4.2cN / 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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Patent Type & Authority Patents(China)
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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