What are the commonly used organic polymers?

①Polyvinyl chloride (PVC) It is the largest amount of a plastic used in construction. Rigid polyvinyl chloride density of 1.38 ~ 1.43g/cm3, high mechanical strength, good chemical stability ② polyethylene (PE) ③ polypropylene (PP) Polypropylene density in all plastics is the smallest, about 0.90 or so. Polypropylene is commonly used to produce pipes, sanitary ware and other building products. Polystyrene (PS) Polystyrene is a colorless and transparent glass-like plastic. ⑤ ABS plastic ABS plastic is a modified polystyrene plastic, acrylic eye (A), butadiene (B) and styrene (S) based on the composition of the three components.