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An antibacterial ag-zno-tio 2 /Preparation method of water-based polyurethane composite slurry

A technology of water-based polyurethane and composite slurry, which is applied in polyurea/polyurethane coatings, antifouling/underwater coatings, paints containing biocides, etc., can solve the problems of mildew spots, affecting appearance and performance, and achieve good Antibacterial effect

Active Publication Date: 2021-10-08
CHINA LEATHER & FOOTWEAR IND RES INST JINJIANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the use of synthetic leather products, mildew spots will occur due to the environment and its own reasons, which will affect its appearance and performance

Method used

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  • An antibacterial ag-zno-tio <sub>2</sub> /Preparation method of water-based polyurethane composite slurry
  • An antibacterial ag-zno-tio <sub>2</sub> /Preparation method of water-based polyurethane composite slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Preparation of ZnO-TiO 2 composite nanoparticles

[0031] Take 1g of anatase nano-TiO 2 (particle size is 100nm), 5g of Zn(NO 3 ) 2 Put 100mL of distilled water in a 250mL beaker, ultrasonically disperse for 15min, transfer the dispersion into a 250mL three-necked flask, add 40mL of 40% NaOH solution, react at 70°C for 5h, centrifuge, wash and dry in sequence to obtain ZnO-TiO 2 composite nanoparticles.

[0032] 2) Preparation of Ag-ZnO-TiO 2 composite nanoparticles

[0033] 1g of ZnO-TiO 2 Composite nanoparticles, 2g AgNO 3 , 5g of polyethylene glycol and 100mL of distilled water were placed in a 250mL three-necked flask, 8g of 10% hydrazine hydrate solution was added, the temperature was controlled to be 30°C for stirring, and the reaction was carried out for 3h. After the reaction was completed, centrifugation, washing, suction filtration, and drying were successively obtained. Ag-ZnO-TiO 2 composite nanoparticles.

[0034] 3) Preparation of Ag-ZnO-TiO ...

Embodiment 2

[0037] 1) Preparation of ZnO-TiO 2 composite nanoparticles

[0038] Take 1g of anatase nano-TiO 2 (particle size is 100nm), 7g of Zn(NO 3 ) 2 Put 100mL of distilled water in a 250mL beaker, ultrasonically disperse for 15min, transfer the dispersion into a 250mL three-necked flask, add 30mL of 40% NaOH solution, react at 75°C for 5h, centrifuge, wash and dry in sequence to obtain ZnO-TiO 2 composite nanoparticles.

[0039] 2) Preparation of Ag-ZnO-TiO 2 composite nanoparticles

[0040] 1g of ZnO-TiO 2 Composite nanoparticles, 3g AgNO 3 , 5g of polyethylene glycol and 100mL of distilled water were placed in a 250mL three-necked flask, 15g of 10% hydrazine hydrate solution was added, the temperature was controlled to be 35°C for stirring, and the reaction was carried out for 4 hours. After the reaction was completed, centrifugation, washing, suction filtration, and drying were successively obtained Ag-ZnO-TiO 2 composite nanoparticles.

[0041] 3) Ag-ZnO-TiO 2 / Prepara...

Embodiment 3

[0044] 1) Preparation of ZnO-TiO 2 composite nanoparticles

[0045] Take 1g of anatase nano-TiO 2 (particle size is 200nm), 8g of Zn(NO 3 ) 2 Put 100mL of distilled water in a 250mL beaker, ultrasonically disperse for 15min, transfer the dispersion into a 250mL three-necked flask, add 40mL of 40% NaOH solution, react at 80°C for 5h, centrifuge, wash and dry to obtain ZnO-TiO 2 composite nanoparticles.

[0046] 2) Preparation of Ag-ZnO-TiO 2 composite nanoparticles

[0047] 1g of ZnO-TiO 2 Composite nanoparticles, 4g AgNO 3 , 5g of polyethylene glycol and 100mL of distilled water were placed in a 250mL three-neck flask, 15g of 10% hydrazine hydrate solution was added, the temperature was controlled to be 40°C for stirring, and the reaction was carried out for 5h. After the reaction was completed, centrifugation, washing, suction filtration, and drying were successively obtained Ag-ZnO-TiO 2 composite nanoparticles.

[0048] 3) Preparation of Ag-ZnO-TiO 2 / Waterborne ...

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Abstract

The invention discloses an antibacterial Ag-ZnO-TiO 2 / The preparation method of waterborne polyurethane composite slurry, this method uses Zn(NO 3 ) 2 as zinc source, TiO 2 As a substrate, TiO was prepared by hydrothermal synthesis 2 Loaded ZnO composite particles (ZnO‑TiO 2 ), followed by ZnO‑TiO 2 As the matrix, the AgNO was mixed with hydrazine hydrate 3 Preparation of Silver-loaded ZnO‑TiO by Reduction 2 . Antibacterial properties of Ag and anatase nano-TiO 2 The synergistic effect between ZnO and the photocatalytic properties of ZnO endows the polyurethane coating with good antibacterial properties and good mechanical properties at the same time.

Description

technical field [0001] The invention relates to the field of synthetic leather antibacterial technology, in particular to an antibacterial Ag-ZnO-TiO 2 / Preparation method of water-based polyurethane composite slurry. Background technique [0002] Synthetic leather has become a substitute material for leather due to its simple production industry, low price, good physical and mechanical properties, aging resistance, and corrosion resistance, and is widely used in the production of bags, clothing, footwear and other products. However, during the use of synthetic leather products, mildew spots will occur due to the environment and its own reasons, which will affect its appearance and performance. Therefore, people are gradually pursuing high-quality and functional synthetic leather products. In the research of functional synthetic leather, antibacterial synthetic leather has been a research hotspot in recent years. Contents of the invention [0003] For the problems exist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/14
CPCC08K2003/0806C08K2003/2241C08K2003/2296C08K2201/003C08K2201/011C09D5/14C09D175/04C08K3/08C08K3/22
Inventor 段徐宾李幸张炫辉王智尤冠群尹岳涛王文琪
Owner CHINA LEATHER & FOOTWEAR IND RES INST JINJIANG CO LTD