Plastic particles refer to granular
plastic, generally divided into more than **0 types, subdivided
into thousands of types. Common plastic particles include
general-purpose plastics, engineering plastics, and special
plastics. General
plastics:polypropylene, polyethylene, polyvinyl
chloride, polystyrene, polyester, polyurethane,
etc. Engineering
plastics:nylon, polytetrafluoro,
polyformaldehyde, polycarbosilane, etc. Special
plastics:thermosetting plastics, functional
polymer plastics, such as artificial kidneys.