Technological watch

The present disclosure belongs to the technical field of novel biodegradable materials, and particularly refers to a method for preparing a biodegradable needle-free airtight infusion connector. A polylactic acid is used as a raw material, through drying, crystallizing and injection moulding in sequence, to prepare the biodegradable needle-free airtight infusion connector. The polylactic acid is an injection molding grade polylactic acid, and has a molecular weight of > 180,000. The product in the present disclosure has a desirable processability, a high transparency, a high hardness and a desirable strength. The product is 100% degraded into carbon dioxide and water within 360 days after returning to nature, and thus is environment-friendly and may be used as an upgrading product of a plastic product, avoiding white pollution. - 1/1l