Low-cost titanium dioxide matting agent for polyamide fibers, and preparation and application thereof

A polyamide fiber, titanium dioxide technology, applied in the direction of single-component polyamide rayon, fibrous filler, fiber chemical characteristics, etc., can solve the problem of poor mechanical properties, poor extinction performance, and poor dispersion stability of polyamide fibers. problem, to achieve the effect of reducing photocatalytic activity, inhibiting photocatalytic activity, and mild reaction conditions

Inactive Publication Date: 2019-10-22
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a low-cost titanium dioxide matting agent for polyamide fibers and its preparation and application, so as to overcome the poor mechanical properties, poor dispersion stability and poor matting performance of polyamide fibers caused by matting agents in the prior art. Excellent defect

Method used

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  • Low-cost titanium dioxide matting agent for polyamide fibers, and preparation and application thereof
  • Low-cost titanium dioxide matting agent for polyamide fibers, and preparation and application thereof
  • Low-cost titanium dioxide matting agent for polyamide fibers, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Preparation of anatase titanium dioxide ultrafine powder: Weigh 300g of titanium dioxide crude product at room temperature and disperse in 450g of deionized water, stir magnetically for 5min, add 1.50g of sodium hexametaphosphate, and continue stirring for 10min to obtain a uniformly mixed titanium dioxide slurry Then slowly add the slurry into the grinder, adjust the spindle speed to 2500r / min, grind for 30min, and wash for later use.

[0057] figure 2 It is the particle size distribution curve of anatase titanium dioxide before and after grinding. 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.

[0058] (2) Preparation of silicon-aluminum coated titanium dioxide: magnetically stir the anatase titanium dioxide ultrafine powder slurry obtained in step (1) for 10 minutes, and ultrasonically disperse it for 20 minutes; then place it in an oil bath and heat it...

Embodiment 2

[0065] (1) Preparation of anatase titanium dioxide ultrafine powder: Weigh 300g of titanium dioxide crude product at room temperature and disperse in 1200g of deionized water, stir magnetically for 5min, add 0.90g of polyethylene glycol, and continue stirring for 10min to obtain a uniformly mixed titanium dioxide slurry Then slowly add the slurry into the grinder, adjust the spindle speed to 2000r / min, grind for 40min, and wash for later use.

[0066] (2) Preparation of silicon-aluminum coated titanium dioxide: magnetically stir the anatase titanium dioxide ultrafine powder slurry obtained in step (1) for 10 minutes, and ultrasonically disperse for 30 minutes; then place it in an oil bath and heat it to 80°C , Stirring rate 500r / min, after stirring 15min, to wherein evenly drip by using 7.10g sodium silicate nonahydrate and 62.4mL deionized water configuration and form the solution that concentration is 0.4mol / L, rate of addition is 80ml / ( h·mol), use 1.6wt% sulfuric acid to c...

Embodiment 3

[0081] (1) Preparation of anatase titanium dioxide ultrafine powder: Weigh 300g titanium dioxide crude product at room temperature and disperse in 700g deionized water, stir magnetically for 5min, add 1.20g caprolactam, continue stirring for 10min to obtain a uniformly mixed titanium dioxide slurry, then Slowly add the slurry into the grinder, adjust the spindle speed to 2300r / min, grind for 35min, and wash for later use.

[0082] (2) Preparation of silicon-aluminum coated titanium dioxide: magnetically stir the anatase titanium dioxide ultrafine powder slurry obtained in step (1) for 10 minutes, and ultrasonically disperse it for 25 minutes; then place it in an oil bath and heat it to 70°C , Stirring rate 400r / min, after stirring 15min, to wherein evenly drip by using 2.37g sodium silicate nonahydrate and 41.6mL deionized water configuration and form the solution that concentration is 0.2mol / L, rate of addition is 100ml / ( h mol), use 1.6wt% sulfuric acid to control the system...

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Abstract

The invention relates to a low-cost titanium dioxide matting agent for polyamide fibers, and preparation and application thereof. The matting agent comprises core-layer anatase phase titanium dioxide,and further comprises an amorphous silicon coating layer and an amorphous aluminum coating layer successively coating the surface of the core-layer anatase phase titanium dioxide, and an outermost anionic surfactant modification layer. A preparation method for the matting agent comprises the following steps: sequentially preparing the amorphous silicon coating layer and the amorphous aluminum coating layer on the surface of ultrafine anatase titanium white powder, and then carrying out organic modification by using an anionic surfactant. The method improves the utilization rate of an expensive aluminum modifier by 12.9% by preparing the amorphous silicon coating layer, and increases the grafting rate of the anionic surfactant by 3 times by preparing the aluminum coating layer; and the method has mild reaction conditions, is suitable for large-scale and continuous industrial production, and effectively reduces process cost.

Description

technical field [0001] The invention belongs to the field of matting agents and their preparation and application, in particular to a low-cost titanium dioxide matting agent for polyamide fibers and its preparation method and application. Background technique [0002] Polyamide fiber, commonly known as nylon or nylon, has good comprehensive properties, such as light weight, hydrophilicity, good mechanical properties, heat resistance, wear resistance and chemical resistance. Nylon fiber fabric has excellent properties such as high strength, good resilience, fatigue resistance, good dyeability, corrosion resistance and insect resistance. Nylon fiber products are favored by consumers in the fields of military and civilian clothing, footwear, swimwear, and carpet decoration. However, the glossy nylon fiber has a dazzling luster, no drape and is transparent. In order to solve these problems, the fiber composition can be improved. Usually, a certain amount of functional inorgani...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06C09C3/08D01F1/10D01F6/60
CPCC01P2002/82C01P2002/85C01P2002/88C01P2004/03C01P2004/04C01P2004/62C01P2006/90C09C1/3692C09C3/006C09C3/066C09C3/08D01F1/106D01F6/60
Inventor 张青红陈爽侯成义徐锦龙杜玮辰汪绪兰李耀刚王宏志杜娇娇
Owner DONGHUA UNIV
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