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Antimicrobial polyvinyl chloride plastic and preparation method thereof

A technology of polyvinyl chloride and polyvinyl chloride resin, which is applied in the field of antibacterial PVC plastic film and its preparation, antibacterial plastic and its preparation, and can solve the problems of low solar energy utilization rate, long-term mildew resistance, antibacterial and antifouling inhibition, Problems such as low photon quantum efficiency, achieve the effects of maintaining tensile strength and light transmittance, high antibacterial, and reducing costs

Active Publication Date: 2013-11-06
XINYA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this TiO 2 There are still many defects in the practical application of antibacterial agents: (1) due to the wide band gap, the light absorption range is still mainly concentrated in the ultraviolet region, and the utilization rate of solar energy is low; (2) the electron-hole formed by light excitation For easy recombination, low photon quantum efficiency, etc., thus adopting this TiO 2 Antimicrobial agents suppress long-term mold resistance, antibacterial properties, and antifouling properties of plastics

Method used

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  • Antimicrobial polyvinyl chloride plastic and preparation method thereof
  • Antimicrobial polyvinyl chloride plastic and preparation method thereof
  • Antimicrobial polyvinyl chloride plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 250L of deionized water to a 1000L reactor, adjust the pH to 2 with concentrated nitric acid, keep the temperature at 80°C, add 10L of 10% titanyl sulfate aqueous solution dropwise at a rate of 1mL / min, stir for 24h, and then add 350L of three Ethylamine, continue to stir at room temperature for 12h, and let stand to separate layers. Take 350L of the light yellow solution in the lower layer and place it in a 500L reactor, add 100g of methacryloxysilane, stir at room temperature for 30min, then add 100kg of light polyvinyl chloride (DP 1300) resin powder, continue stirring for 2h, filter, Dry to obtain antibacterial polyvinyl chloride micropowder.

[0029] 100 parts by weight of the above-mentioned soft polyvinyl chloride (DP 1300) resin micropowder assembled with nitrogen-doped titanium dioxide photocatalyst, wherein about 35nm nano-scale nitrogen-doped titanium dioxide (TiO 2-x N x ) The total amount of the photocatalyst is 1% of the weight of the polyvinyl chlor...

Embodiment 2

[0031] Prepare the soft polyvinyl chloride (DP 1300) resin powder that is assembled with nitrogen-doped titanium dioxide photocatalyst in the same manner as Example 1, the difference is that the titanium dioxide precursor selected is titanyl nitrate; the nitrogen dopant selected is Ethylenediamine.

[0032] 100 parts by weight of soft polyvinyl chloride (DP 1300) resin micropowder assembled with nitrogen-doped titanium dioxide photocatalyst, wherein about 35nm nano-scale nitrogen-doped titanium dioxide (TiO 2-x N x) The total amount of the photocatalyst is 2% of the weight of the polyvinyl chloride resin matrix, and the content of nitrogen in the titanium dioxide photocatalyst is controlled at 8% (weight ratio). Above-mentioned PVC fine powder is blended with the dioctyl phthalate plasticizer of 43 parts by weight, the epoxy soybean oil antioxidant of 3 parts by weight, the liquid barium-zinc composite thermal stabilizer of 1 part by weight, at 110~150 After stirring at a co...

Embodiment 3

[0034] Soft polyvinyl chloride (DP 1300) resin powder assembled with nitrogen-doped titanium dioxide photocatalyst was prepared in the same manner as in Example 1, except that the titanium dioxide precursor was titanium tetrachloride.

[0035] 100 parts by weight of soft polyvinyl chloride (DP 1300) resin micropowder assembled with nitrogen-doped titanium dioxide photocatalyst, wherein about 47nm nano-scale nitrogen-doped titanium dioxide (TiO 2-x N x ) The total amount of the photocatalyst is 4% of the weight of the polyvinyl chloride resin matrix, and the content of nitrogen in the titanium dioxide photocatalyst is controlled at 8% (weight ratio). Above-mentioned PVC micropowder and the dioctyl phthalate plasticizer of 38 weight parts, the dioctyl glutarate plasticizer of 2 weight parts, the dioctyl sebacate plasticizer of 4 weight parts, the dioctyl sebacate plasticizer of 2 weight parts The liquid barium-zinc-calcium heat stabilizer is blended, stirred evenly at a constan...

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Abstract

The invention discloses an antimicrobial polyvinyl chloride plastic and a preparation method thereof. The antimicrobial polyvinyl chloride plastic comprises a polyvinyl chloride resin matrix, a plastic additive and a nano titanium dioxide photocatalyst which is assembled on the surface of the polyvinyl chloride resin matrix, and is characterized in that the nano titanium dioxide photocatalyst is doped with inorganic non-metallic anions. The nano antimicrobial polyvinyl chloride plastic is non-toxic, has high antibacterial, fungistatic, mildewproof, and anti-fouling functions under the visible light irradiation conditions, and has very strong mildewproof property to the mildew such as aspergillus niger, aspergillus terreus, ruddle penicillium and the like, with the mildewproof grade up to 0, and the killing rate to escherichia coli, candida albicans, staphylococcus aureus, Gram bacteria and the like being larger than 91 percent.

Description

technical field [0001] The invention relates to a functional plastic and a preparation method thereof, in particular to an antibacterial plastic and a preparation method thereof, more specifically to an antibacterial PVC plastic film and a preparation method thereof. Background technique [0002] As people pay more and more attention to the healthy environment, the safety and sanitation of plastic products has become a topic of concern. Ordinary plastics are easy to be contaminated and breed a variety of microorganisms during use. For example, polyvinyl chloride (PVC) film, which is used in the largest amount, is easy to mold and breed a variety of pathogenic bacteria if it is in a humid state all the year round, which will bring great harm to human health. harm. Antibacterial plastic is a new type of material with antibacterial and bactericidal properties, which can keep the material itself clean and reduce cross-infection caused by the use of plastic products. Antibacter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08K13/06B29C43/24B29C43/58B29L7/00
Inventor 王舜林娟娟林大杰周环
Owner XINYA ELECTRONICS
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