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A method for preparing titanium dioxide-loaded polymer fibers by hydrothermal injection

A technology of polymer fiber and titanium dioxide, applied in the nano field, can solve the problems of limited application and difficult recycling, and achieve the effect of simple and easy method, strong operability and low cost

Inactive Publication Date: 2016-09-14
NINGHAI TIANHE ECOLOGICAL WATERSCAPE CONSTRCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the nanoscale particle size of titanium dioxide, it is very difficult to recycle, which greatly limits its application.

Method used

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  • A method for preparing titanium dioxide-loaded polymer fibers by hydrothermal injection

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The method for preparing titanium dioxide-loaded polymer fibers by hydrothermal injection of the present invention comprises the following steps:

[0024] a) After fully mixing commercially available polymer fibers (including but not limited to polyester, acrylic, nylon, Velen, spandex, polypropylene, etc.) and water at a mass ratio of 10:300, add water with injection holes In the thermal reaction kettle, the heating after sealing is carried out at a heating rate of 3 degrees / minute;

[0025] b) When the temperature of the reactor rises to 160 degrees, keep the temperature for 30 minutes; then use high-pressure nitrogen to make 2ml the density of 1.73 g / cm 3 The titanium tetrachloride solution is injected into the reactor along the injection hole;

[0026] c) After closing the injection hole, continue to maintain the temperature for 120 minutes, then cool naturally for 8 hours; then centrifuge the reactant for 10 minutes, wash with absolute ethanol for 3 times, and dry...

Embodiment 2

[0028] The method for preparing titanium dioxide-loaded polymer fibers by hydrothermal injection of the present invention comprises the following steps:

[0029] a) Mix the commercially available polymer fiber and water thoroughly at a mass ratio of 10:450, then add it into a hydrothermal reaction kettle with an injection hole, and heat it at a rate of 2 degrees per minute after sealing;

[0030] b) When the temperature of the reaction kettle rises to 150 degrees, keep the temperature for 10 minutes; then use high-pressure nitrogen to make 0.5ml the density of 1.73 g / cm 3 The titanium tetrachloride solution is injected into the reactor along the injection hole;

[0031] c) After closing the injection hole, continue to maintain the temperature for 60 minutes, then cool naturally for 6 hours; then centrifuge the reactant for 5 minutes, wash with absolute ethanol twice, and dry at 60°C for 8 hours to obtain the target product.

Embodiment 3

[0033] The method for preparing titanium dioxide-loaded polymer fibers by hydrothermal injection of the present invention comprises the following steps:

[0034] a) After fully mixing commercially available polymer fibers (including but not limited to polyester, acrylic, nylon, Velen, spandex, polypropylene, etc.) and water at a mass ratio of 13:200, add water with injection holes In the thermal reaction kettle, the heating after sealing is carried out at a heating rate of 5 degrees per minute;

[0035] b) When the temperature of the reactor rises to 190 degrees, keep the temperature for 40 minutes; then use high-pressure nitrogen to make 4ml the density of 1.73 g / cm 3 The titanium tetrachloride solution is injected into the reactor along the injection hole;

[0036] c) After closing the injection hole, continue to maintain the temperature for 150 minutes, then cool naturally for 10 hours; then centrifuge the reactant for 10 minutes, wash with absolute ethanol 4 times, and dr...

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Abstract

The invention discloses a method for preparing a titanium dioxide loaded high polymer fiber through hydrothermal injection. The method comprises the following steps: (a) fully and uniformly mixing a commercially available high polymer fiber and water according to a weight ratio of (10-13):(200-450) to obtain a mixture, adding the mixture into a hydrothermal reaction kettle with an injection hole, and heating after sealing; (b) preserving the temperature for 10-40 minutes after the temperature of the reaction kettle rises to 150-190 DEG C, introducing high-pressure nitrogen, and injecting 0.5-10ml of titanium tetrachloride solution with the density of 1.73g / cm<3> along the injection hole; and (c) closing the injection hole, continuously preserving the temperature for 60-150 minutes, naturally cooling for 6-10 hours, centrifuging reactants for 5-10 minutes, cleaning 2-4 times by using absolute ethyl alcohol, and drying at the temperature of 60-80 DEG C for 8-12 hours, so as to obtain a target product. The method has the characteristics of being mild in preparation conditions, simple, feasible, high in operability, high in repeatability, and low in cost, has the certain universality, and the like.

Description

technical field [0001] The invention relates to a preparation method of a composite fiber with titanium dioxide evenly loaded on the surface by using a commercially available polymer fiber as a carrier through a hydrothermal injection method, and belongs to the field of nanotechnology. Background technique [0002] Titanium dioxide (TiO 2 ) has stable physical and chemical properties, good photoelectric properties, is non-toxic to biological safety, has abundant sources, and the photogenerated electron-hole potential potential is high, so it has strong oxidizing and reducing properties. It is an excellent Photocatalyst, and is recognized as an environmentally friendly photocatalytic material with the most development and application potential in the field of environmental pollution control. [0003] However, due to the nanoscale particle size of titanium dioxide, it is very difficult to recycle, which greatly limits its application. Therefore, the key to the application of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/46
Inventor 童宁军
Owner NINGHAI TIANHE ECOLOGICAL WATERSCAPE CONSTRCO