Preparation method for medical polymer material with blood compatibility
A technology of polymer materials and blood compatibility, applied in the field of surface modification of medical polymer materials, can solve the problems of unsuitable surface modification of polymer materials, achieve excellent blood compatibility, improve blood compatibility and biological Compatibility and structural stability
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Embodiment 1
[0034] A method for preparing a blood-compatible medical polymer material, comprising the following steps:
[0035] Place a medical polyethylene non-woven fabric with a thickness of 1.0mm and a size of 10.0cm×10.0cm on the sample stage in the ion implantation equipment, seal the vacuum chamber of the equipment, and evacuate to 2.5×10 -3 Pa, through argon, the pressure is maintained at 1.0×10 -2Pa, turn on the power supply of the gas source, implant argon ions into the surface of the material under the conditions of accelerating voltage 2.5kv, accelerating current 1mA, arc voltage 70v, and extraction voltage 600v, the implantation time is 5min, and the implantation dose is 2×10 15 ions / cm 2 , after the injection, turn off all the power sources of the gas source, and keep it under the argon atmosphere for 10 minutes, then take out the material to obtain a blood-compatible polyethylene non-woven fabric.
[0036] figure 1 It is the physical picture of the blood-compatible polye...
Embodiment 2
[0040] A method for preparing a blood-compatible medical polymer material, comprising the following steps:
[0041] Place a medical polypropylene sheet with a thickness of 0.2mm and a size of 5.0cm×10.0cm on the sample stage in the ion implantation equipment, seal the vacuum chamber of the equipment, and evacuate to 1×10 -3 Pa, through argon, the pressure is maintained at 1.0×10 -3 Pa, turn on the power supply of the gas source, implant argon ions into the surface of the material under the conditions of accelerating voltage 10kv, accelerating current 1mA, arc voltage 90v, and extraction voltage 500v, the implantation time is 10min, and the implantation dose is 4×10 15 ions / cm 2 After the injection, turn off the power supply of the gas source, and keep it under the argon atmosphere for 10 minutes, then turn off the argon gas; feed nitrogen gas, and maintain the pressure at 4.0×10 -3 Pa, turn on the gas source again, implant nitrogen ions into the surface of the material under...
Embodiment 3
[0044] A method for preparing a blood-compatible medical polymer material, comprising the following steps:
[0045] Place a medical polystyrene membrane with a thickness of 0.1mm and a size of 5.0cm×10.0cm on the sample stage in the ion implantation equipment, seal the vacuum chamber of the equipment, and evacuate to 1×10 -4 Pa, through helium, the pressure is maintained at 4.0×10 -3 Pa, turn on the power supply of the gas source, implant helium ions into the surface of the material under the conditions of accelerating voltage 10kv, accelerating current 1mA, arc voltage 90v, and extraction voltage 600v, the implantation time is 20min, and the implantation dose is 5×10 16 ions / cm 2 , after the injection, turn off the power supply of the gas source, and keep it under the helium atmosphere for 10 minutes; turn off the helium and inject ammonia gas, and maintain the pressure at 4.0×10 -3 Pa, turn on the gas source again, implant nitrogen ions into the surface of the material und...
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