Patent ID: 11938244
Assignee: HEJIE LI
Field: Medical technology (Instruments)
Classification: CPC A  B  C | IPC A  B  C

Claim 10:
11. The method of claim 10, wherein after the further promoting the formation of peroxide groups and hydroxyl groups on the surface, the magnesium alloy AZ31 is moved back into the plasma reactor, the vacuum degree is adjusted to 26.7, acrylic acid vapor is slowly introduced until reaching 66.7 Pa, after reacting for 1 minute, the magnesium alloy AZ31 is taken out and cleaned for 10 minutes in an ultrasonic cleaner, thereafter, the magnesium alloy AZ31 is transferred into a mixed aqueous solution, with pH of 5.0, of 1.25 mg/ml N-hydroxysuccinimide and 5 mg/ml 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide, vibrated and stirred for 20 hours at 4° C., and then taken out, finally, the polyurethane coated on the surface of the magnesium alloy AZ31 is activated.