Method for preparing novel medical lubricating antibacterial catheter
A technology for medical catheters and catheters, applied in catheters and other directions, can solve problems such as reduced effect, and achieve the effects of environmental protection, uniform dispersion and good lubricity of materials.
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[0021] In Example 1, 1000 g of polypropylene-based nano silver antibacterial powder with a silver concentration of 2000 ppm and 3000 g of polylactic acid chips were passed through a screw extruder. Blending and extruding at 175-220°C to prepare polylactic acid antibacterial mother chips; then through a precision melt extruder, a lubricating antibacterial medical catheter containing 500 ppm of silver is prepared.
Example Embodiment
[0022] Example 2: 1000g of polypropylene-based nano silver antibacterial powder with a silver concentration of 10000ppm and 4000g of polylactic acid chips were blended and extruded at 175-220℃ through a screw extruder to prepare polylactic acid antibacterial master chips; A melt extruder was used to prepare a lubricating antibacterial medical catheter containing 200 ppm silver.
Example Embodiment
[0023] Example 3: The polypropylene-based nano silver antibacterial powder 1000g with a silver concentration of 10000ppm and 7000g polylactic acid chips are blended and extruded at 175-220℃ through a screw extruder to prepare polylactic acid antibacterial master chips; A melt extruder was used to prepare a lubricating antibacterial medical catheter containing 125 ppm of silver.
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