Polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew and preparation method thereof

An antibacterial, antifungal, and polyurethane technology, which is applied in fiber treatment, textiles, and papermaking, can solve the problems of sterilization, long antibacterial response time, and product discoloration, and achieve the effect of long-lasting antibacterial characteristics

Active Publication Date: 2012-05-16
BEIJING CHAMGO NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inorganic antibacterial agents also have the problem of long bactericidal and antibacterial response time, which may easily cause product discoloration

Method used

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  • Polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew and preparation method thereof
  • Polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew and preparation method thereof
  • Polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The first step: preparation of inorganic / organic composite nano-antibacterial agent

[0041] First the silver-loaded montmorillonite (Andimei) with a particle size of 100nm , the silver ion content is 0.2wt% of the carrier, 10 parts of Beijing Chonggao Nano Technology Co., Ltd.), 0.05 part of sodium thiosulfate (Zibo Yiren Chemical Technology Co., Ltd.), in 100 parts of dimethylformamide (DMF solvent) Fully wet and disperse, stir and grind. Add 0.06 parts of isopropyl tri-isooctanoyl-titanate (Nanjing Nengde Chemical Co., Ltd.), and continue grinding. Add 12 parts of 2-thiocyanomethylthiobenzothiazole (Hunan Dajie Technology Co., Ltd.), and stir to form a stable suspension and emulsion mixture. spare.

[0042] The second step: the configuration of antibacterial polyurethane synthetic leather bottom leather molding slurry.

[0043] Add the selected brand of polyurethane resin into the container, slowly add dimethylformamide, stir to melt, add leveling agent, stir ev...

Embodiment 2-3

[0064] Adopt the same method as Example 1 to prepare antibacterial and antifungal polyurethane synthetic leather materials, the difference is that the addition of inorganic / organic composite antibacterial agent replaces 1% with 3% and 5% respectively.

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Abstract

The invention discloses polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew and a preparation method thereof. The polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew comprises a polyurethane resin and a composite antiseptic uniformly dispersed in polyurethane, wherein, the composite antiseptic comprises 0.01 to 20 parts of an inorganic antiseptic, 0.01 to 35 parts of an organic antiseptic, 0.0001 to 0.4 part of a compatilizer and 0.0001 to 0.4 part of an anti-blushing agent. The polyurethane synthetic leather provided in the invention has instant, high efficiency and lasting functions of inhibiting bacteria and resisting mildew; according to results of antibacterial property detection, the antibacterial polyurethane synthetic leather has good inhibition and killing effects on staphylococcus aureus, Klebsiella pneumoniae, escherichia coli, mixed mycete, etc., an antibacterial rate is greater than 99%, and a mildew-resistant grade is up to 1-0 grade. The preparation method comprises the following steps: dispersing the composite antiseptic with dimethyl formamide (a DMF solvent), adjusting viscosity of an obtained mixture until the viscosity of the mixture is close to the viscosity of molding slurry of the polyurethane synthetic leather, uniformly mixing the mixture with the molding slurry of the polyurethane synthetic leather and carrying out molding so as to prepare the polyurethane synthetic leather capable of inhibiting bacteria and resisting mildew. The method is simple and reliable, does not change an original process route and enables production cost for a product to be controlled.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather material and a preparation method thereof, in particular to a polyurethane synthetic leather material with antibacterial and antifungal functions and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather is a kind of polymer material with special properties. It has outstanding properties such as outstanding wear resistance, strength and toughness, solvent resistance, oil resistance, and high cutting rate. In 1953, Germany first applied for a patent for polyurethane synthetic leather, and commercial production began in the 1960s. At present, polyurethane synthetic leather materials are widely used in sports and leisure shoes, leather shoes, leather clothing, bags, sofa furniture, belts, ticket holders, stationery, automotive interiors and medical equipment manufacturing and other fields. Since my country first introduced the dry process production technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/564D06M13/248D06M11/00D06M15/263D06N3/14
Inventor 李毕忠李泽国朱阳春路明洁吴坤
Owner BEIJING CHAMGO NANO TECH
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