1, chemical properties: polypropylene has good chemical stability to plastics and can withstand the corrosion of many chemicals. Polypropylene is sensitive to some organic solvents, such as ketones and aromatic hydrocarbons.

2. Physical properties: Polypropylene has high melting point, low density and high hardness, which makes it have good strength and rigidity. Compared with some other plastics, polypropylene has poor thermal stability and weather resistance.