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Nylon 6 melt spinning method and device under external field condition

A kind of melt spinning, nylon technology, applied in spinning method and device, nylon 6 melt spinning device and fiber refinement field

Active Publication Date: 2015-07-22
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous research has proved that applying a pulsed magnetic field during the polymer forming process can produce a "magnetic crystallization effect", which affects the spatial arrangement and conformational behavior of polymer chains and segments. This effect can regulate the size of polymer materials. and properties, where the method has not been applied so far to improve nylon 6 melt spinning technology

Method used

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  • Nylon 6 melt spinning method and device under external field condition
  • Nylon 6 melt spinning method and device under external field condition
  • Nylon 6 melt spinning method and device under external field condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this example, see figure 1 , figure 2 and Figure 4 , a melt spinning device of a melt spinning method under external field conditions, comprising a melting heating device 1, a material holding device 2, a feeding device 3, a spinneret 4 and a fiber collecting plate 5, and the melting heating device 1 is arranged on The periphery of the material holding device 2 heats the nylon 6 material entering the material holding device 2, and the nylon 6 material is heated to melt to form a nylon 6 melt. The spinneret 4 is installed at the bottom of the material holding device 2, and the feeding device 3 will The liquid material in the material holding device 2 is pressed down and pushed to the spinneret 4 for ejection, and the spinning formed at room temperature is received on the fiber collecting plate 5. An adjustable auxiliary pulse magnetic field device 6 is set, the auxiliary pulse magnetic field device 6 is a pulse coil 61, the temperature of the auxiliary pulse magne...

Embodiment 2

[0024] This embodiment is basically the same as Embodiment 1, especially in that:

[0025] In this example, see Figure 4 , in the melting stage, turn on the pulsed magnetic field device and set the strength and frequency, the magnetic field strength is 1.5T, and the frequency is 25 times / min.

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Abstract

The invention discloses a nylon 6 melt spinning method and device under an external field condition. The nylon 6 melt spinning device comprises a fusing heating device, a containing device, a feeding device, a spinning nozzle, a fiber collecting plate and an adjustable pulsed magnet field device. The nylon 6 melt spinning device is characterized in that nylon 6 slices are heated and fused by the heating device in the containing device, subjected to pulsed magnet field processing by a certain time, pushed to the spinning nozzle through the feeding device, sprayed out and received at the fiber collecting plate; the adjustable pulsed magnet field device is composed of a pulsed magnet field generator and a cooling circulating water device; the strength and frequency of the pulsed magnet field generator are controllable within a certain range. The pulsed magnet field with the adjustable strength and frequency is applied in a traditional nylon 6 melt spinning process, a nylon 6 melt is subjected to action of the pulsed magnet field in the spinning process, the nylon 6 segmental motion activity is improved, the mobility of the melt is improved, and the diameter of the manufactured fiber is reduced, and the tensile strength is improved.

Description

technical field [0001] The invention relates to a spinning method and device, in particular to a nylon 6 melt spinning device and a fiber thinning method, which are applied in the technical field of synthetic fiber preparation. Background technique [0002] Nylon 6 has been widely used in various industries due to its excellent dyeability, high strength, good gloss, good drapability, and good hygroscopicity. Weaving cloth, etc.; civilian products include weaving clothing and decorative fabrics, which can be used for weaving socks, underwear, sportswear, carpets, etc. Nylon 6, that is, nylon 6, is usually melt-spun from polycaprolactam obtained by ring-opening polymerization of caprolactam. [0003] Melt spinning is a method in which the fiber-forming high polymer melt flows out of the melt stream through the spinning spinneret, and is cooled and solidified in the surrounding air or water. The traditional melt spinning device is mainly composed of a screw, a sleeve, a heati...

Claims

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Application Information

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IPC IPC(8): D01D5/088D01D13/00
CPCD01D5/08D01D10/00D01D13/00
Inventor 刘丽董圣歌林河山应超
Owner SHANGHAI UNIV
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