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Titanium dioxide air purifying paper doped with rhodium ions and electrostatic spinning preparation method thereof

An electrospinning method, titanium dioxide technology, applied in the direction of paper, papermaking, paper coating, etc.

Inactive Publication Date: 2012-12-05
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcoming of present existing air purification material and method, provide the electrospinning method preparation method of the rhodium ion-doped titanium dioxide air purification paper that not only makes paper have air purification function, but also improves paper printing performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Isopropyl titanate (purity 98%), polyvinyl acetate (solid content 55%), acetic acid (purity 99.6%), ethanol (purity 99%) were used in a mass ratio of 0.9:1:1.1:2.9 Proportional mixing, adding rhodium trichloride (mass ratio of rhodium element to titanium element = 1:100), magnetic stirring for 3.5 hours (rotating speed 500 rpm), and standing for 2 hours. Electrospinning device (10ml syringe volume, 0.5mm needle diameter) was used for electrospinning at room temperature, the relative humidity was controlled at 50%, the distance from the needle to the collecting plate was 18cm, the spinning voltage was 16kV, and the flow rate was 60μL / min. The collected spun fibers are calcined in a muffle furnace. The muffle furnace has a heating rate of 15K / min, heated to 200°C for 4 hours, and then heated to 580°C at a heating rate of 15K / min, and held for 40 minutes. The spun fiber is cooled and ground at room temperature to obtain nanometer titanium dioxide powder with a pa...

Embodiment 2

[0027] Example 2: Isopropyl titanate (purity 99%), polyvinyl acetate (solid content 60%), acetic acid (purity 99.5%), ethanol (purity 99%) in a mass ratio of 1:0.9:0.9:3.1 Proportional mixing, adding rhodium trichloride (rhodium element to titanium element mass ratio = 0.1: 100), magnetically stirring for 4 hours (rotating speed 600 rpm), and standing for 2 hours. Electrospinning is carried out at room temperature using an electrospinning device (injector volume 10ml, needle diameter 0.5mm), relative humidity is controlled at 50%, distance from needle to collection plate is 19cm, spinning voltage is 17kV, and flow rate is 70μL / min. The collected spun fibers are calcined in a muffle furnace, the heating rate is 10K / min, the temperature is raised to 190°C for 3.5 hours, and then the temperature is raised to 580°C with a heating rate of 15K / min, and the temperature is kept for 40 minutes. The sample is cooled and ground at room temperature. Nano titanium dioxide powder with a part...

Embodiment 3

[0028] Example 3: Isopropyl titanate (purity 99%), polyvinyl acetate (solid content 55%), acetic acid (purity 99.5%), ethanol (purity 99%) in a mass ratio of 0.9:1:0.9:3.1 Proportional mixing, adding rhodium trichloride (rhodium element to titanium element mass ratio = 0.5: 100), magnetically stirring for 4 hours (rotating speed 800 rpm), and standing for 1.5 hours. Electrospinning device (10ml syringe volume, 0.5mm needle diameter) is used for electrospinning at room temperature, the relative humidity is controlled at 52%, the distance from the needle to the collection plate is 19cm, the spinning voltage is 17kV, and the flow rate is 60μL / min. The collected spun fibers are calcined in a muffle furnace, the heating rate is 10K / min, the temperature is raised to 190°C for 4 hours, and the temperature is raised to 570°C with a heating rate of 15K / min, and the temperature is maintained for 40 minutes. The sample is cooled and ground at room temperature. Titanium dioxide powder with...

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Abstract

The invention discloses a titanium dioxide air purifying paper doped with rhodium ions and an electrostatic spinning preparation method thereof. The method is as follows: mixing tetraisopropyl titanate, polyvinyl acetate, acetic acid and alcohol, adding rhodium trichloride, stirring and mixing uniformly, and standing; adopting an electrostatic spinning device to carry out electrostatic spinning on the obtained solution at room temperature; then calcining and grinding the collected spinning fiber, thus obtaining titanium dioxide powder doped with rhodium; mixing the titanium dioxide powder doped with rhodium with filler used for pulping and papermaking by an in-pulp adding manner, and preparing the purifying paper by technical process of pulping and papermaking; or dispersing the titanium dioxide powder doped with rhodium and pigments for coating together, adding a coating auxiliary agent to prepare a coating material, coating by utilizing a paper machine coater, and drying to obtain the purifying paper. By adopting an electrostatic spinning method, the nano titanium dioxide doped with rhodium ions is directly prepared; and when the nano titanium dioxide is applied in paper, the paper is ensured to have an air purifying function, and the printing performance of the paper is improved.

Description

Technical field [0001] The invention relates to air purification paper, in particular to a rhodium ion doped titanium dioxide air purification paper and a method for preparing the same by electrostatic spinning. technical background [0002] Since the 21st century, with the continuous development of nanotechnology, traditional colloidal spinning, solution spinning, melt spinning and other spinning methods have gradually exposed their limitations because the diameters of the fibers produced are generally in the micron level. The diameter of the spun fiber is between nanometer and micrometer, and it has the characteristics of high porosity and large surface area, which has attracted more and more attention. [0003] Electrospinning technology was invented by Formhals in 1934. The usual electrospinning device consists of three parts: a high-voltage power supply, a spinning solution storage device (with needles) and a collection device. The principle is to generate high voltage at the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/63D21H19/14D21H27/00
Inventor 陈克复陈华杨仁党李军杨飞
Owner SOUTH CHINA UNIV OF TECH
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