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Method for preparing titanium dioxide for delustering chemical fibers

A titanium dioxide and chemical fiber technology, which is applied in the field of preparation of titanium dioxide for chemical fiber extinction, can solve the problems of poor color phase, reduction of surface potential of titanium dioxide particles, and unfavorable dispersion of titanium dioxide.

Inactive Publication Date: 2012-12-26
JIAXING GAOSHENG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Titanium dioxide containing Fe, Cr, Ni and other impurities has "light-color interchangeability", which increases the b value of the polymer, deteriorates the hue, and high impurity content, which will reduce the potential of the surface of titanium dioxide particles, which is not conducive to titanium dioxide. Dispersion of white powder

Method used

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  • Method for preparing titanium dioxide for delustering chemical fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A preparation method of titanium dioxide for chemical fiber matting, comprising the steps of:

[0051] 1) Add polycarboxylate with a raw material solid content of 0.2% in deionized water, put in raw material titanium dioxide, stir and disperse, and prepare a slurry with a raw material solid content of 40-50%;

[0052] 2) Use the iron removal filter to perform preliminary filtration and iron removal on the slurry;

[0053] 3) Use one or two consecutive sand mills to further disperse titanium dioxide;

[0054] 4) Dilute the above-mentioned wet-milled slurry into a diluted slurry with a solid content of 20%;

[0055] 5) Use iron removal filter to filter and remove iron from the diluted slurry;

[0056] 6) Classify and surface treat the diluted slurry after filtration and iron removal;

[0057] 7) Wash and settle the diluted slurry obtained in the previous step to obtain concentrated slurry;

[0058] 8) Spray-dry the concentrated slurry obtained in the previous step to ob...

Embodiment 2

[0072] A preparation method of titanium dioxide for chemical fiber matting, comprising the steps of:

[0073] 1) Add polycarboxylate with a raw material solid content of 0.2% in deionized water, put in raw material titanium dioxide, stir and disperse, and prepare a slurry with a raw material solid content of 40-50%;

[0074] 2) Use the iron removal filter to perform preliminary filtration and iron removal on the slurry;

[0075] 3) Use one or two consecutive sand mills to further disperse titanium dioxide;

[0076] 4) Dilute the above-mentioned wet-milled slurry into a diluted slurry with a solid content of 20%;

[0077] 5) Use iron removal filter to filter and remove iron from the diluted slurry;

[0078] 6) Classify and surface treat the diluted slurry after filtration and iron removal;

[0079] 7) Wash and settle the diluted slurry obtained in the previous step to obtain concentrated slurry;

[0080] 8) Spray-dry the concentrated slurry obtained in the previous step to ...

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Abstract

The invention belongs to the field of fine chemical engineering, and particularly relates to a method for preparing titanium dioxide for delustering chemical fibers. The method comprises the following technological flows: slurry making, iron-removal filtering, wet grinding, diluting, iron-removal filtering, grading, surface treatment, washing settling, atomized drying, grinding and packaging. The method provided by the invention has the advantageous effects as follows: 1, the prepared products have controllable particle sizes and stable dispersity; 2, the impurity removal effect is good; 3, the removal effect of soluble slats is good; and 4, the product quality is guaranteed.

Description

technical field [0001] The invention belongs to the field of fine chemical industry, and in particular relates to a preparation method of titanium dioxide for chemical fiber matting. Background technique [0002] At present, the chemical fiber matting agent requires titanium dioxide to have high purity, proper particle size, uniform distribution, good hue, low impurity content, good dispersion of particles in the medium, and high stability at high temperature during the polymerization process. However, there are the following technical difficulties in the preparation process , [0003] 1. Particle size and particle size distribution [0004] Because the TiO2 particle size has varying degrees of influence on the preparation liquid and permeability of the chemical fiber processing process, the coagulation of the slurry, the spinnability of the polyester, the service life of the filter, the light effect of the fiber, and the abrasion of the spinning equipment; For the optica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
Inventor 沈超
Owner JIAXING GAOSHENG NEW MATERIAL TECH
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