Production method for full-dull nylon 6-slice

A manufacturing method and full extinction technology, which is applied in the manufacture of rayon, textiles and paper, and single-component polyamide rayon. It can solve the problem of light fastness, weakening of heat resistance and oxidation resistance of silk, and prone to chromatic aberration and stripes on the cloth surface. , poor dyeing uniformity, etc., to achieve good matting performance, good spinning performance, and good dispersion

Active Publication Date: 2008-12-03
GUANGDONG XINHUI MEIDA NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the mechanical indicators of the full-dull slice produced by this technology can meet the requirements during spinning, it is prone to breakage during the spinning process, the dyeing uniformity of the silk is poor, and the dyeing rate is low.
Even after interweaving selected high-quality dyed silk and spandex, color difference and stripes are prone to appear on the cloth surface after high temperature setting
The main reason is that after the titanium dioxide content of the nylon 6 full-dull fiber is greatly increased, the light resistance, heat resistance and oxidation resistance of the silk are greatly weakened.

Method used

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  • Production method for full-dull nylon 6-slice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Select titanium dioxide coated with anatase grade average particle size D50m=0.31 μm inorganic manganese ions, add water to prepare a suspension with a concentration of 28%, add 0.3wt% sodium hexametaphosphate dispersant relative to the weight of titanium dioxide, and then grind Machine grinding for 5 hours, put it into the sedimentation tank for 24 hours, put the upper suspension into the titanium dioxide blending tank through the filter, measure the concentration of the titanium dioxide suspension, use caprolactam solution to correct the concentration of the titanium dioxide suspension, so that the titanium dioxide reaches the relative weight It is a standard matting agent solution with a concentration of 20%.

[0024] A certain weight of molten caprolactam solution, water as an initiator of 3.5wt% relative to the weight of caprolactam, 0.1wt% acetic acid, and 7.5wt% titanium dioxide solution, that is, the content of titanium dioxide relative to the weight of caprolact...

Embodiment 2

[0026] The preparation of the titanium dioxide solution was the same as in Example 1.

[0027] A certain weight of caprolactam, water as initiator of 3.5wt% relative to the weight of caprolactam, 7.5wt% titanium dioxide solution, i.e. 1.5% titanium dioxide content relative to the weight of caprolactam, 0.4wt% terephthalic acid, 0.3wt% Dipiperidinyl isophthalamide, 0.1wt% of 3-(diethylamino)-1-propylamine are metered by a metering pump, then mixed by a static mixer and continuously sent into the VK polymerization tube. A stirrer is installed on the upper part of the polymerization tower, and the stirring speed is 130 rpm, so that the caprolactam solution and the titanium dioxide solution are further mixed evenly during the reaction process, and the agglomeration and sedimentation of the titanium dioxide in the polymerization reaction are prevented. Under the conditions of the upper polymerization temperature of 260-270°C and the lower polymerization temperature of 240-250°C, th...

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Abstract

The invention provides a method for manufacturing full-dull nylon-6 chips, which belongs to the field of spinning chip, in particular to full-dull nylon-6 chips manufactured by using titanium dioxide (TiO2) as a dulling agent. The method aims to solve the problem in the production of the prior dulling agent solvent. The method has the technical scheme that (1) a proper TiO2 and TiO2 solution collocation method is selected; (2) proper formulation and process are selected; and (3) a stirring device for dispersing TiO2 dulling agent solution is selected. The technical scheme can improve the TiO2 content in the polymerization process of nylon-6, and the polymer melt is filtered to remove large-diameter TiO2. Accordingly, high-performance chips with good dull performance, good TiO2 dispersion and good spinning performance can be obtained.

Description

Technical field: [0001] The invention belongs to the field of spinning chips. Especially suitable for titanium dioxide (TiO 2 ) is used as a matting agent to manufacture full-dull nylon 6 slices. Background technique: [0002] Nylon is the earliest industrially produced synthetic fiber in my country. It has high strength, good elasticity, soft hand feeling, easy dyeing and wear resistance. It is widely used in clothing fabrics, hosiery, carpets, industrial silk and other fields. However, the clothes processed by traditional ordinary semi-dull nylon fibers are difficult to be applied to casual clothes and high-end clothes because the surface gloss is relatively obvious and the surface has a strong waxy texture. In order to overcome the above shortcomings, people have produced full-dull nylon fibers through physical modification of fibers, which have the characteristics of soft luster, good deep dyeing, high fabric drape, and strong shielding performance. The woven fabric s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08K9/00C08G69/16C08G69/46D01F6/90D01F1/10
Inventor 梁广义毛新华简锦炽李伟聪钟卫民陈社任
Owner GUANGDONG XINHUI MEIDA NYLON
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