Can you tell me what kind of plastic material can be used in medical instruments?
You need to add various additives in plastics processing or modification process, such as in the PVC medical products in the amount of the plasticizer is as high as 30 - 60%, so as far as possible the use of non-toxic additives, long-term use to prevent or reduce the additive precipitation, so as not to affect the product performance and the therapeutic effect;
The resin used for medical plastic requires higher purity and narrower molecular weight distribution;
Plastic is inevitable in the process of polymerization reactor, to come into contact with the metal catalyst. Often contain trace metal ions, according to the national standard of medical plastic, residues are clearly defined for zinc, lead, cadmium, copper, barium, tin and other metal ions;
Because most monomers and their oligomers are poisonous, medical plastics have strict restrictions on the residues of these substances;
According to the use requirements of medical plastics, it is often necessary to make products with surface hydrophilicity, anti coagulation, radiation sterilization and other special functions.
