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Zeolite-loaded and vanadium ion-doped titanium dioxide antibacterial paper and preparation method thereof

A technology of titanium dioxide and vanadium ions, which is applied in paper, papermaking, paper coating, etc., to achieve the effects of improving the response effect, improving the bactericidal performance, and improving the bactericidal performance

Inactive Publication Date: 2011-04-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to overcome the shortcoming of the organic antibacterial agent that antibacterial paper uses at present, provide the preparation method of the titanium dioxide antibacterial paper that not only guarantees the antibacterial performance of paper, but also improves the paper printing performance of zeolite loading vanadium ion doping

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Butyl titanate (purity 98%), absolute ethanol (purity 99.5%), and hydrochloric acid aqueous solution (mass concentration 36%) were mixed with a centrifuge at room temperature in a ratio of 1:2.5:0.4 (rotating speed 800rpm), and then vanadyl triisopropoxide (controlling the V / Ti molar ratio to 0.5:100) was added into the above solution and continued to stir for 2 hours (rotating speed 800rpm). After the natural zeolite (the amount used is 0.9 times the mass of butyl titanate) passed through a 200-mesh sieve, the above solution was added to continue stirring (500 rpm) for 5 hours, and then distilled water was added dropwise until a gel was formed. The gel was dried at 100° C. for 4 hours, then calcined at 500° C. for 4 hours, cooled and then ground to a particle size of about 30 μm to obtain a loaded zeolite. Mix 4% loaded zeolite relative to the quality of dry pulp with 325 mesh talcum powder relative to 10% relative to the quality of dry pulp, and add it to t...

Embodiment 2

[0028] Example 2: Butyl titanate (purity 98%), absolute ethanol (purity 99.5%), hydrochloric acid (purity 37%) were mixed in a centrifuge at room temperature at a ratio of 0.9:2.6:0.5 (speed 1000rpm) , then add vanadyl triisopropoxide (controlling the V / Ti molar ratio to 1:100) into the above solution and continue mixing for 1.5 hours (rotating speed 1000rpm), and the natural zeolite (the amount is 1 times that of butyl titanate) is passed through a 200-mesh sieve Finally, the above solution was added and stirred for 5 hours (rotating speed 700 rpm), and then distilled water was added dropwise until a gel was formed. Dry at 105°C for 4 hours, then calcinate at 505°C for 4.5 hours, and grind to a particle size of about 40 μm after cooling. Add 2.5%, 5%, and 10% loaded zeolite to the pulp mixing tank for use in the paper machine, respectively, relative to the mass percentage of dry pulp. The pulp ratio is 50% softwood and 50% hardwood, and the mixing degree 48°SR, the dosage of...

Embodiment 3

[0029] Example 3: Butyl titanate (99%), absolute ethanol (99.5%), and hydrochloric acid (37%) were mixed in a centrifuge at a ratio of 1.1:2.6:0.4 at room temperature (500 rpm), and then Vanadyl triisopropoxide (controlling the V / Ti molar ratio to 1.5:100) was added to the above solution and continued to mix for 2 hours (rotating speed 500rpm). The above solution was continuously stirred for 4.5 hours (stirring speed 600 rpm), and then distilled water was added dropwise until a gel was formed. Dry at 110°C for 4 hours, then calcinate at 510°C for 4 hours, and grind to a particle size of about 38 μm after cooling. Mix the loaded zeolite with a mass percentage of 3% (relative to the dry pulp) and 325 mesh talcum powder with a mass percentage of 5% (relative to the dry pulp), add it to the pulp mixing tank for use in the paper machine, and make the slurry The ratio is 40% coniferous wood and 60% hardwood, the beating degree of mixing is 45°SR, the dosage of cationic rosin glue i...

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PUM

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Abstract

The invention discloses zeolite-loaded and vanadium ion-doped titanium dioxide antibacterial paper and a preparation method thereof. The method comprises the following steps of: mixing tetra-n-butyl titanate, absolute ethanol and water solution of hydrochloric acid; adding tripropamol vanadyl in the mixture; sieving natural zeolite, adding the sieved natural zeolite into the mixture and stirring and mixing uniformly; dropping distilled water until the gel is formed; drying, calculating and grinding to obtain loaded zeolite; mixing the loaded zeolite of which the weight is 2.5-10 percent of oven dry stock with pulp for producing paper in the pulp; producing the antibacterial paper by using a papermaking process flow; or dispersing the loaded zeolite of which the weight is 3.3-10 percent of pigment for coating cloth, adding a coating assistant to form a coating, and then coating and drying on a coating machine of a papermaking machine to obtain the antibacterial paper. With a vanadium ion-doped method, the response effect of titanium dioxide under visible light can be improved; and by using the zeolite with excellent adsorption performance as a carrier, the sterilizing performance of the antibacterial paper can be remarkably improved.

Description

technical field [0001] The invention relates to antibacterial paper, in particular to zeolite loaded vanadium ion doped titanium dioxide antibacterial paper and a preparation method thereof. technical background [0002] Since the 21st century, with the continuous development of global industry, the natural environment on which human beings depend is deteriorating day by day. Harmful chemicals and bacteria always pose a threat to human health, especially the spread of infectious diseases such as SARS and bird flu has caused people to Attach great importance to environmental hygiene. Therefore, nano-titanium dioxide, which has the functions of bactericidal, antibacterial and degrading organic poisons, has attracted more and more people's attention. [0003] Paper is an indispensable daily necessities in people's life, especially newspapers, banknote paper and other fluid papers inevitably carry a variety of bacteria, which will cause the widespread spread of bacteria. There...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H19/12
Inventor 陈克复陈华杨仁党李军杨飞
Owner SOUTH CHINA UNIV OF TECH
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