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Preparation method of delustering agent for chinlon chemical fibers

A matting agent, chemical fiber technology, applied in chemical instruments and methods, fiber types, fiber processing and other directions, can solve the problem of difficult aluminum cladding layer compactness and uniformity, unfavorable to improve the mechanical properties of nylon fiber, unfavorable nylon fiber dyeing fastness. It is easy to recycle and reuse, reduce photocatalytic activity, and maintain dispersion stability.

Pending Publication Date: 2019-06-07
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

specifically discloses the use of NaAlO 2 The aluminum-coated titanium dioxide is prepared from the solution, and then the aluminum-coated titanium dioxide is organically coated with methyl hydrogen-containing silicone oil and hexamethyldisilazane, which solves the problem of environmental pollution caused by the existing titanium dioxide organic treatment agent
However, this coating method of directly adding inorganic aluminum salts leads to a high concentration of aluminum salts in the system, which is prone to nucleation and coating, and it is difficult to achieve the compactness and uniformity of the aluminum coating layer on the surface of titanium dioxide, which is not conducive to nylon. The improvement of the dyeing fastness of the fiber, at the same time, it ignores the engineering practice of inorganic salt wastewater generated in the production process of aluminum-coated titanium dioxide, which is difficult to recycle and the cost of sewage treatment is high.
In addition, MA Hong-peng et al. reported in S P&BMH RELATED ENGINEERING.2013.(01):10-14 that the inorganic nanopowder modified by methyl hydrogen-containing silicone oil changed from hydrophilic to superhydrophobic state, which enhanced However, the titanium dioxide prepared by this organic modification method is prone to hydrophobic polymerization in caprolactam, and the higher surface tension after modification will lead to poor compatibility with nylon fiber, which is not suitable for It is beneficial to improve the mechanical properties of nylon fiber; at the same time, compared with the coupling agent, the organic modifier used is also more expensive

Method used

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  • Preparation method of delustering agent for chinlon chemical fibers
  • Preparation method of delustering agent for chinlon chemical fibers
  • Preparation method of delustering agent for chinlon chemical fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Particle size refinement and homogenization of anatase titanium dioxide: Weigh 100g of primary titanium dioxide at room temperature and disperse it in 150g of absolute ethanol, stir for 10min with magnetic force, add 0.5g of hexamethylenediamine, and continue stirring for 20min to obtain a mixture Uniform titanium dioxide slurry, and then slowly add the slurry into the grinder, adjust the spindle speed to 2500r / min, grind for 30min, dry the resulting slurry in an 80°C blast oven and grind it for later use.

[0047] figure 2 It is the particle size distribution curve of anatase titanium dioxide before and after grinding, and the results show that the particle size distribution of the ultrafine powder after grinding is 0.2-0.4 μm and the particle size distribution is concentrated.

[0048] (2) Preparation of aluminum-coated titanium dioxide: Weigh 20 g of the ultrafine powder obtained in step (1), disperse it in 30 g of absolute ethanol, add 1.0 g of caprolactam, sti...

Embodiment 2

[0055] (1) Anatase titanium dioxide particle size refinement and homogenization treatment: Weigh 100g of titanium dioxide primary product at room temperature and disperse it in 400g of absolute ethanol, magnetically stir for 10min, add 0.3g caprolactam, continue to stir for 20min to obtain a homogeneous mixture Titanium dioxide slurry, and then slowly add the slurry into the grinder, adjust the spindle speed to 2000r / min, grind for 40min, dry the resulting slurry in a blast oven at 80°C and grind it for later use.

[0056] (2) Preparation of aluminum-coated titanium dioxide: Weigh 20 g of the ultrafine powder obtained in step (1), disperse it in 80 g of absolute ethanol, add 0.2 g of caprolactam, stir magnetically for 10 min to obtain a slurry, and disperse the slurry ultrasonically for 20 min; then Put it in an oil bath and heat it to 80°C with a stirring rate of 300r / min. Add 2.404g of aluminum isopropoxide and stir for 15 minutes. A mixed solution with a pH of 8.5 was adjus...

Embodiment 3

[0063] (1) Anatase titanium dioxide particle size refinement and homogenization treatment: Weigh 100g of titanium dioxide primary product at room temperature and disperse it in 300g of absolute ethanol, magnetically stir for 10min, add 0.4g of adipic acid, continue stirring for 20min to obtain a mixture Uniform titanium dioxide slurry, then slowly add the slurry into the grinder, adjust the spindle speed to 2200r / min, grind for 35min, dry the resulting slurry in a blast oven at 80°C and grind it for later use.

[0064] (2) Preparation of aluminum-coated titanium dioxide: Weigh 20 g of the ultrafine powder obtained in step (1), disperse it in 70 g of absolute ethanol, add 0.6 g of caprolactam, stir magnetically for 10 min to obtain a slurry, and ultrasonically disperse the slurry for 30 min; then Put it in an oil bath and heat it to 70°C, with a stirring rate of 400r / min, add 1.603g of aluminum isopropoxide, and stir for 15 minutes, then evenly add anhydrous ethanol and deionize...

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Abstract

The invention relates to a preparation method of a delustering agent for chinlon chemical fibers. The preparation method comprises the following steps: preparing anatase titanium dioxide ultrafine powder; preparing aluminum coated titanium dioxide slurry; and carrying out surface grafting modification by a coupling agent method. The prepared flatting agent for the chinlon chemical fibers has excellent flatting performance, good dispersion stability, low photocatalytic activity and good compatibility with the chinlon fibers. The preparation method is simple in process, mild in reaction condition and suitable for industrial large-scale production; by-products are easy to recycle, sewage treatment is easy and convenient and the process cost is effectively reduced.

Description

technical field [0001] The invention belongs to the field of matting agents for chemical fibers, in particular to a preparation method of matting agents for nylon chemical fibers. Background technique [0002] Polyamide fiber, commonly known as nylon or nylon, is a synthetic fiber with good chemical stability and mechanical properties. The products made of it have the characteristics of good elasticity, high strength, wear resistance and resistance to moths, and are loved by consumers. However, the luster of ordinary nylon fibers that have not been matted is harsh and has no drape. In order to solve this problem, the fiber composition can be improved. Usually, a certain amount of functional inorganic powder with a refractive index that is quite different from the fiber-forming polymer is added to the synthetic fiber. [0003] Anatase titanium dioxide has the advantages of high whiteness, high refractive index, large refractive index difference with fiber-forming polymer, l...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/04C09C3/06C09C3/08C09C3/12D06M11/46D06M101/34
Inventor 侯成义陈爽徐锦龙杜玮辰汪绪兰张青红王宏志李耀刚
Owner DONGHUA UNIV
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