The injection molding materials commonly used in injection molding and the plastic materials suitable for injection molding include PE PP PS and other plastics that have thermoplasticity and are suitable for thermal injection molding.
PE material: PE is also called polyethylene. It is one of the more commonly used polymer materials in daily life. It is widely used in the manufacture of plastic bags, plastic films and milk buckets.
PP material: polypropylene, polypropylene has high crystallinity and regular structure, so it has excellent mechanical properties. The mechanical properties of polypropylene are higher than those of polyethylene, but they are still relatively low in plastic materials, and their tensile strength can only reach 30 MPa or slightly higher. Polypropylene with a larger isotactic index has a higher tensile strength, but as the isotactic index increases, the impact strength of the material decreases, but it does not change after a certain value.
PS material: PS is polystyrene.
