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Method for preparing silver-loaded nanometer titanium dioxide antibiosis UV curable varnish

A technology of nano-titanium dioxide and varnish, which is applied to biocide-containing paints, anti-fouling/underwater coatings, coatings, etc., to achieve the effects of simple preparation method, uniform dispersion and stable storage

Inactive Publication Date: 2011-11-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrochemical methods are only applicable to the dispersion of nanoparticles in water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add silver-loaded nano-titanium dioxide powder accounting for 3% of the mass fraction of UV varnish to 1 / 10 UV varnish, ultrasonically disperse for 30 minutes, and then add 0.25% of the mass fraction of UV varnish and 9 / 10 UV varnish. , at a high-speed mechanical dispersion with a rotational speed of 3500r / min for 50min, and the composite dispersant is a mixture of Tritonx-100 and sodium hexametaphosphate with a mass ratio of 6:4. The modified silver-loaded nano-titanium dioxide UV varnish roller is applied to the plastic surface, and the UV light curing machine cures the paint film.

Embodiment 2

[0015] Add silver-loaded nano-titanium dioxide powder accounting for 4% of the mass fraction of UV varnish to 1 / 10 UV varnish, ultrasonically disperse for 35 minutes, and then add 0.3% of the mass fraction of UV varnish and 9 / 10 UV varnish. , at a high-speed mechanical dispersion with a rotational speed of 4000r / min for 65min, the composite dispersant is a mixture of Tritonx-100 and sodium hexametaphosphate with a mass ratio of 5.5:4.5. The modified silver-loaded nano-titanium dioxide UV varnish roller is applied to the plastic surface, and the UV light curing machine cures the paint film.

Embodiment 3

[0017] Add silver-loaded nano-titanium dioxide powder accounting for 5% of the mass fraction of UV varnish into 1 / 10 UV varnish, ultrasonically disperse for 40 minutes, and then add 0.35% of the mass fraction of UV varnish and 9 / 10 UV varnish. , at a high-speed mechanical dispersion with a rotational speed of 4500r / min for 80min, the composite dispersant is a mixture of Tritonx-100 and sodium hexametaphosphate with a mass ratio of 6.5:3.5. The modified silver-loaded nano-titanium dioxide UV varnish roller is applied to the plastic surface, and the UV light curing machine cures the paint film.

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PUM

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Abstract

The invention discloses a method for preparing silver-loaded nanometer titanium dioxide antibiosis UV curable varnish, and the method comprises the following steps: adding silver-loaded nanometer titanium dioxide powder which accounts for 3 - 5% of UV curable varnish into 1 / 10 UV curable varnish, performing an ultrasonic dispersion for 30 - 40 minutes, then adding a composite dispersant and 9 / 10 UV curable varnish into a pre-dispersed nanometer modified paint, wherein an addition of the composite dispersant accounts for 0.25 - 0.35 % of UV curable varnish system, performing a high speed mechanical dispersion for 50 - 80 minutes, wherein the rotating speed is 35000 - 4500 r / minutes. According to the antibiosis paint provided in the invention, the antibacterial agent has the advantages of uniform dispersion, stable storage without changing the original physicochemical performance of the paint, strong antibacterial capability, strong capability of photocatalytic degradation of organic matter and simple preparation method, and is used for the fields of antibacterial household electrical appliances, antibacterial plastics, antibacterial commodities and the like, and is suitable for the plastic products of PP, PS, HDPE, LDPE, PVC, PC, ABS and the like.

Description

technical field [0001] The invention relates to a method for preparing an antibacterial coating, in particular to a method for dispersing a silver-loaded nano-titanium dioxide antibacterial agent in plastic paint-UV varnish to obtain a nano-modified antibacterial coating. Background technique [0002] Various pathogenic bacteria, fungi and viruses in daily life affect people's health and even endanger their lives, causing great harm to society. The application of nanomaterials in the coating industry will significantly improve the quality of coating products and endow coatings with new special functions. The application technology of nano-antibacterial composite coating is simple and low-cost. It can catalyze and decompose bacteria and pollutants by using natural light. It has high catalytic activity, good chemical stability and thermal stability, no secondary pollution, non-irritating, safe and non-toxic Features. And it can be compatible with the natural ecological envir...

Claims

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Application Information

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IPC IPC(8): C09D5/14C09D7/12C09D7/14C09D7/80
Inventor 彭兵柴立元张莹李国良李航彬闵小波杨志辉
Owner CENT SOUTH UNIV
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