A kind of preparation method of semi-dull nylon 6 filament

A semi-extinction, nylon technology, applied in the field of spinning, can solve the problem that the slicing method is difficult to meet the requirements of small batch filament production, and achieve the effects of good spinnability, stable product quality and easy operation.

Active Publication Date: 2016-03-16
FUJIAN JINJIANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the change of market demand, the existing slicing method is difficult to meet the production requirements of small batches of filaments with different matt degrees, so it is necessary to study the use of masterbatch method to produce semi-dull nylon 6 filaments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the production process of bright nylon 6 slices, add about 0.1% stabilizer, the stabilizer is N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1 , 3-phthalamide, the second bright nylon 6 chips (water content less than 600ppm) with a relative viscosity of about 2.5 were obtained, and melt blended with titanium dioxide, extruded, cooled and granulated under the protection of nitrogen Afterwards, the full-dull nylon 6 masterbatch is prepared for later use, and the percentage content of the titanium dioxide mass in the full-dull nylon 6 masterbatch is 20%, and the moisture content of the obtained full-dull nylon 6 masterbatch is less than 2000ppm.

[0017] The dried full-dull nylon 6 masterbatch and the first bright nylon 6 slices are passed through their respective conveying pipes at a mass ratio of 1:66, blended and melted by a screw extruder, enter the spinning box, and pass through a metering pump, After spinning assembly, cooling, oiling and winding, etc., it is wound i...

Embodiment 2

[0020] In the production process of bright nylon 6 chips, about 0.15% of stabilizer is added, and the stabilizer is N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl)-1 , 3-phthalamide, the second bright nylon 6 chips (water content less than 600ppm) with a relative viscosity of about 2.6 were obtained, and melt blended with titanium dioxide, extruded, cooled and granulated under the protection of nitrogen Afterwards, the full-dull nylon 6 masterbatch is prepared for later use. The mass of titanium dioxide accounts for 40% of the full-dull nylon 6 masterbatch, and the moisture content of the obtained full-dull nylon 6 masterbatch is less than 1900ppm. The mass percentage of titanium dioxide in the bright nylon 6 slice is less than or equal to 0.05%.

[0021] The above-mentioned dried full-dull nylon 6 masterbatch and the first bright nylon 6 slices are passed through their respective conveying pipes at a mass ratio of 1:130, blended and melted by a screw extruder, enter the spinning ...

Embodiment 3

[0024] In the production process of bright nylon 6 slices, a stabilizer with a mass fraction of about 0.12% is added, and the stabilizer is N,N'-bis(2,2,6,6-tetramethyl-4-piperidinyl )-1,3-phthalamide to prepare the second glossy nylon 6 chips (water content less than 600ppm) with a relative viscosity of about 2.55, and melt blending, extruding, and titanium dioxide with titanium dioxide under nitrogen protection. After cooling and granulating, the full-dull nylon 6 masterbatch is prepared for use. The mass of titanium dioxide accounts for 30% of the full-dull nylon 6 masterbatch, and the moisture content of the obtained full-dull nylon 6 masterbatch is less than 1800ppm. The mass percentage of titanium dioxide in the bright nylon 6 slice is less than or equal to 0.05%.

[0025] The above-mentioned dried full-dull nylon 6 masterbatch and the first bright nylon 6 slices are passed through their respective conveying pipelines at a mass ratio of 1:99, blended and melted by a scre...

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Abstract

The invention relates to the field of spinning, and particularly relates to a preparation method of a semi-dull nylon 6 filament. The method comprises the steps of blending and melting full-dull nylon 6 master batch and a first bright nylon 6 slice in a screw extruder by a master batch adding control system, enabling the product to enter a spinning box body, enabling the product to pass through a metering pump and a spinning component, and cooling, oiling and winding by other devices to obtain the semi-dull nylon 6 filament, wherein the mass ratio of the full-dull nylon 6 master batch to the first bright nylon 6 slice is 1:200 to 1:20. The preparation method of the semi-dull nylon 6 filament has the beneficial effects that filaments with different dullness degrees can be produced by changing the mass ratio of the master batch to the slice, small-batch production is realized, and the semi-dull nylon 6 filament is good in spinnability and stable in product quality; furthermore, the complicated treatment is not needed to be carried out on a delustering agent, titanium dioxide, so that the operation is simple and convenient.

Description

technical field [0001] The invention relates to the field of spinning, in particular to a method for preparing semi-dull nylon 6 filaments. Background technique [0002] Nylon fiber has many excellent properties, such as good wear resistance, good elasticity, high strength, etc., so it is welcomed by consumers. With the large-scale expansion of nylon fiber production capacity at home and abroad, the competition in the nylon fiber market is becoming increasingly fierce, and the profit margin of products is getting smaller and smaller. Therefore, manufacturers must continue to innovate and produce differentiated, high value-added products in order to enhance their market competitiveness. . [0003] According to the classification of the industry standard "FZ / T5104-2011 Fiber Grade Polycaprolactam Chips", nylon 6 chips can be divided into bright (the mass percentage of titanium dioxide is less than or equal to 0.05%), semi-dull (the mass percentage of titanium dioxide is great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/90D01F1/10D01D5/08
Inventor 吴华新陈飞陈万钟林庆辉
Owner FUJIAN JINJIANG TECH
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