Preparation method of antibacterial waterproofing moisture-permeable polyurethane thin film

A polyurethane film, waterproof and moisture-permeable technology, which is applied in the field of polyurethane film preparation to achieve the effects of reasonable process settings, easy realization, and excellent air permeability and waterproofness.

Inactive Publication Date: 2019-01-29
JIANGSU HONGYUAN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is to provide a preparation method of antibacterial waterproof and moisture-permeable polyurethane film, which can solve the above-mentioned shortcomings existing in the existing waterproof and moisture-permeable polyurethane film

Method used

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Effect test

Embodiment 1

[0023] The invention discloses a preparation method of an antibacterial waterproof and moisture-permeable polyurethane film, which first uses a mixture of surface-modified molybdenum tailings, bamboo charcoal powder and nano-titanium dioxide to prepare an antibacterial enhanced modified water-based polyurethane resin emulsion, and the polyurethane resin It has essential antibacterial properties, and then uses β-cyclodextrin / tetrahydrofuran compound and antibacterial enhanced modified polyurethane resin to physically blend under the conditions of nano-silver antibacterial liquid to obtain antibacterial properties, mechanical properties, water resistance and air permeability. An effectively improved polyurethane composite film is obtained. Concrete preparation method comprises the following steps:

[0024] (1) Preparation of modified complex: Dissolve β-cyclodextrin in N,N-dimethylacetamide to prepare a solution with a mass concentration of β-cyclodextrin of 25%, and then add th...

Embodiment 2

[0029] The invention discloses a preparation method of an antibacterial waterproof and moisture-permeable polyurethane film, which first uses a mixture of surface-modified molybdenum tailings, bamboo charcoal powder and nano-titanium dioxide to prepare an antibacterial enhanced modified water-based polyurethane resin emulsion, and the polyurethane resin It has essential antibacterial properties, and then uses β-cyclodextrin / tetrahydrofuran compound and antibacterial enhanced modified polyurethane resin to physically blend under the conditions of nano-silver antibacterial liquid to obtain antibacterial properties, mechanical properties, water resistance and air permeability. An effectively improved polyurethane composite film is obtained. Concrete preparation method comprises the following steps:

[0030] (1) Preparation of modified complex: Dissolve β-cyclodextrin in N,N-dimethylacetamide to prepare a solution with a mass concentration of β-cyclodextrin of 30%, and then add th...

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Abstract

The invention discloses a preparation method of an antibacterial waterproofing moisture-permeable polyurethane thin film. The method includes: 1) preparing a modified composition; 2) performing surface modification on antibacterial composite filler; 3) preparing antibacterial enhancing modified polyurethane resin; 4) preparing the polyurethane composite thin film. In the invention, molybdenum tailings, bamboo charcoal powder and nano TiO2 are subjected to the surface modification and then are added to the waterborne polyurethane resin during synthesis, thus preparing the inherent-antibacterialenhanced polyurethane resin; then the polyurethane resin is physically blended with a beta-cyclodextrin / tetrahydrofuran composite in the presence of nano silver antibacterial solution to prepare thethin film. The composite thin film has excellent broad-spectrum antibacterial property, mechanical performance, water resistance and breathability and waterproofing function, is excellent in comprehensive performance and has extensive market prospect.

Description

technical field [0001] The invention relates to the technical field of polyurethane film preparation, in particular to a preparation method of an antibacterial waterproof and moisture-permeable polyurethane film. Background technique [0002] Since the 1960s, polyvinyl chloride, neoprene and various synthetic rubbers have been widely used in the field of clothing for special environments. Clothes made of these materials have the advantages of being waterproof and liquid-proof, but at the same time, The sweat produced by the human body's own metabolism cannot be excreted in time, causing people to feel uncomfortable, such as hot and cold, and this is mainly due to the lack of "breathability" of such polymer materials. [0003] Films and coatings made of polyurethane can cleverly combine the functions of waterproof and moisture permeability without losing their original excellent physical and chemical properties. They are ideal materials that can achieve the above-mentioned "b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/14C08L5/16C08K9/04C08K3/00C08K3/04C08K3/22C08G18/34C08G18/42C08G18/66C08G18/75C08G18/67C08J5/18C08B37/16
CPCC08B37/0012C08G18/0823C08G18/348C08G18/4277C08G18/673C08G18/755C08J5/18C08J2375/14C08J2405/16C08K3/00C08K3/04C08K9/08C08K2003/2241C08K2201/011C08G18/6659
Inventor 周喜峰
Owner JIANGSU HONGYUAN NEW MATERIAL TECH
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