Silver ion active carbon antimicrobial dressing and preparation method thereof
A technology of silver ion and activated carbon, which is applied in silver ion activated carbon antibacterial dressing and its preparation, and in the field of antibacterial medical dressing, can solve the problems of nano-silver limitation, environmental pollution, and influence on antibacterial performance, and achieve the simple and easy preparation method, overcome Application disadvantages, low cost effect
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[0029] like figure 1 Shown, this silver ion active carbon antibacterial dressing preparation method mainly comprises the following steps:
[0030] 1. Silver dyeing step: put the silver ion solution (for example, the concentration is 0.1% to 3.0%) and the precursor fiber into a steam pressure vessel (for example, a steam pressure cooker), and heat it to the first temperature (for example, 115 to 130° C.), React for a period of time (for example, 10 to 30 minutes), cool down, wash repeatedly with a washing medium (for example, distilled water), and dry at a second temperature (for example, 110°C) to form silver-stained precursor fibers, and let it stand to room temperature;
[0031] 2. Carbonization step: in a nitrogen environment, carbonize the silver-stained precursor fiber from room temperature to a third temperature (for example, 400-600° C.) at a first heating rate (for example, 5-20° C. / min), Carbonize for a certain period of time (for example, 15 to 60 minutes) to obtain...
Embodiment 1
[0036] Prepare the silver ion solution by conventional methods (such as configuring 0.5% silver nitrate solution with deionized water), put the prepared silver ion solution and the precursor fiber in a steam pressure cooker, heat to 115° C., react for 30 minutes, and cool. After repeated washing with distilled water, the precursor fibers were dried at 110°C to obtain silver ion fibers. Put the silver ion fiber in a nitrogen environment, heat up to 400-600°C at a heating rate of 10°C / min for carbonization, and the carbonization time is 30min to prepare the silver ion carbon fiber. Continue to raise the temperature of the silver ion carbon fiber from 400 to 600°C to 900°C at a rate of 5°C / min, while feeding nitrogen and water vapor at the same time, and make the ratio of water vapor flow to (water vapor flow + nitrogen flow) 49 %, the activation time is 60min, and the silver ion activated carbon fiber is prepared. Silver ion activated carbon fiber is the antibacterial layer 3, ...
Embodiment 2
[0038] Prepare the silver ion solution by conventional methods (such as configuring 0.5% silver nitrate solution with deionized water), put the prepared silver ion solution and the precursor fiber in a steam pressure cooker, heat to 115° C., react for 30 minutes, and cool. After repeated washing with distilled water, the precursor fibers were dried at 110°C to obtain silver ion fibers. Put the silver ion fiber in a nitrogen environment, heat up to 400-600°C at a heating rate of 10°C / min for carbonization, and the carbonization time is 30min to prepare the silver ion carbon fiber. Continue to raise the temperature of the silver ion carbon fiber from 400 to 600°C to 900°C at a rate of 5°C / min, while feeding nitrogen and water vapor at the same time, and make the ratio of water vapor flow to (water vapor flow + nitrogen flow) 49 %, the activation time is 60min, and the silver ion activated carbon fiber is prepared. Silver ion activated carbon fiber is the antibacterial layer 3, ...
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