Small common sense in plastic recycling-what are the five general plastics?

What are the five general plastics

Some plastic varieties with large output, low price, wide use and wide impact are used to call general plastics. General Plastics There are five major varieties of general plastics, namely polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and ABS. They are all thermoplastics.

Polyethylene (PE) is the most productive variety in the plastics industry. According to different density, PE can be divided into: low density polyethylene LDPE; high density polyethylene HDPE; linear low density polyethylene LLDPE.

Polypropylene (PP) is a thermoplastic obtained by polymerizing propylene. Polypropylene is widely used because of its low price, good overall performance and easy processing. Especially in recent years, the rapid development of polypropylene resin modification technology has made it more widely used.

Polyvinyl chloride (PVC) is a plastic obtained by polymerizing vinyl chloride, and its hardness can be greatly changed by adding a plasticizer. Its hard products and even soft products have a wide range of uses.

Polystyrene (PS) can be divided into general-purpose polystyrene (GPPS), high-impact polystyrene (HIPS), and expandable polystyrene (EPS).

ABS plastic is a terpolymer of three monomers of acrylonitrile (A), butadiene (B) and styrene (S). The relative content of the three monomers can be changed at will to make various resins.