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Antibacterial, waterproof and moisture permeable type composite functional material and preparation method and application thereof

A waterproof and moisture-permeable composite function technology, which is applied in the preparation of medical protective clothing, waterproof and moisture-permeable polyurethane/nano-antibacterial particle composite functional materials and its preparation, and can solve the problem of agglomeration , uneven dispersion of nanoparticles, poor compatibility between inorganic nanoparticles and polymers, etc., to achieve the effect of natural ability enhancement

Inactive Publication Date: 2011-03-23
合肥普尔德医疗用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the ways to obtain waterproof and moisture-permeable functions combined with other functions are in the form of physical blending of functional nanoparticles and waterproof and moisture-permeable materials. This method is prone to uneven dispersion and agglomeration of nanoparticles, and the compatibility of inorganic nanoparticles and polymers Not good, and affect the mechanical properties of waterproof and moisture-permeable materials, so its application is also subject to certain restrictions

Method used

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  • Antibacterial, waterproof and moisture permeable type composite functional material and preparation method and application thereof
  • Antibacterial, waterproof and moisture permeable type composite functional material and preparation method and application thereof
  • Antibacterial, waterproof and moisture permeable type composite functional material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Surface Modification of Nano Antibacterial Particles

[0046] Take 2g of nano antibacterial Ag + Particles (particle size 30nm), dissolved in 100ml of double distilled aqueous solution, added 0.5g of coupling agent KH-792 at room temperature, stirred for 4h, precipitated and filtered to obtain activated nano antibacterial particle A component ,spare.

Embodiment 2

[0048] Synthesis of Polyurethane Emulsion

[0049] Add the measured polyol PPG after vacuum drying to a three-necked flask equipped with a reflux condenser, a temperature controller and a stirrer, N 2 Under protection, a measured amount of diisocyanate (TD I:MD I-100HL mass ratio=9:1) mixture was added dropwise to carry out the initial polymerization reaction, and the reaction temperature was maintained at 80°C. After reacting to a certain extent until the emulsion appears light yellow and slightly greenish, introduce self-emulsifier / hydrophilic group DMPA (dissolved with an appropriate amount of NMP in advance) and chain extender BD, and carry out chain extension reaction at 75°C. A small amount of acetone was added during the process to reduce the viscosity. After the chain extension reaction is completed, cool down to 45°C, pour the reaction product into a beaker, stir in an emulsifier, slowly add deionized water dissolved in neutralizing agent TEA, and carry out neutraliz...

Embodiment 3

[0051] Synthesis of Polyurethane Emulsion

[0052] Add the vacuum-dried metered polyol PEG into a three-necked flask equipped with a reflux condenser, a temperature controller and a stirrer, N 2 A metered amount of diisocyanate (TDI:MD I-100HL mass ratio=9:1) mixture was added dropwise under protection to carry out the initial polymerization reaction, and the reaction temperature was maintained at 80°C. After reacting to a certain extent until the emulsion appears light yellow and slightly greenish, introduce self-emulsifier / hydrophilic group DMPA (dissolved with an appropriate amount of NMP in advance) and chain extender BD, and carry out chain extension reaction at 75°C. A small amount of acetone was added during the process to reduce the viscosity. After the chain extension reaction is completed, cool down to 45°C, pour the reaction product into a beaker, stir in an emulsifier, slowly add deionized water dissolved in neutralizing agent TEA, and carry out neutralization whi...

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Abstract

The invention discloses an antibacterial, waterproof and moisture permeable type composite functional material, which comprises the following components in part by weight: 92 to 98 parts of waterproof and moisture permeable polyurethane and 2 to 8 parts of nano antibacterial particles. The preparation method for the composite functional material comprises the following steps of: 1) chemically modifying the nano antibacterial particles; 2) preparing a performed polymer of waterproof and moisture permeable type functional polyurethane; and 3) performing chemical grafting reaction on the nano antibacterial particles which are chemically modified and the waterproof and moisture permeable type functional polyurethane to finally obtain the antibacterial, waterproof and moisture permeable polyurethane / nano antibacterial particle composite functional material of the invention. The functional material interacts with fabrics to be prepared into antibacterial, waterproof and moisture permeable type medical protection clothing products by coating technology, and tests prove that medical protection clothing has higher antibacterial, waterproof and moisture permeable performance.

Description

technical field [0001] The present invention relates to an antibacterial waterproof and moisture-permeable composite functional material, in particular to a waterproof and moisture-permeable polyurethane (PU) / nanometer antibacterial particle (NAP) composite functional material and a preparation method thereof, and the invention also relates to the waterproof and moisture-permeable polyurethane (PU) ) / nano antibacterial particles (NAP) composite functional material in the preparation of medical protective clothing. Background technique [0002] At present, there are two main types of waterproof and moisture-permeable materials used in fabric lamination or coating, one is polytetrafluoroethylene (PTFE) film, and the other is segmented polyurethane (PU) emulsion and film. [0003] Among them, PTFE is mainly laminated with fabrics in a laminated manner. There are two generations of PTFE films. The first generation is a microporous film. The diameter of the micropores is much sm...

Claims

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Application Information

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IPC IPC(8): C08G18/83D06M15/564
Inventor 严德正
Owner 合肥普尔德医疗用品有限公司
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