Plastic safety helmet is a kind of protective equipment used to protect the head from external impact or puncture, commonly used in construction, mining, electric power and other industries. So what is the main material of plastic helmet? The main material of plastic helmet is polymer, which is what we usually call plastic. Plastic is a kind of macromolecule made of small molecules connected repeatedly, which is lightweight, durable and mouldable. According to different structures and properties, plastics can be divided into two categories: thermoplastic and thermosetting plastics. Thermoplastic is a kind of plastic that can be softened when heated and hardened when cooled, and has the advantage of repeatable processing. Commonly used thermoplastics include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and polycarbonate (PC). These plastics can be made into helmets of various shapes by injection moulding, blow-moulding, extrusion and other methods. Thermoset plastics are plastics that undergo a chemical reaction when heated to form an irreversible network structure, which has the advantages of high strength, high temperature resistance, and high chemical resistance. Commonly used thermoset plastics include phenolic resins (PF), amino resins (MF), and epoxy resins (EP). These plastics can be made into various shapes of helmets by compression moulding, transfer moulding and other methods. To sum up, the main material used for plastic safety helmets is polymer, also known as plastic. According to different needs, you can choose different types of plastic to make safety helmets for good protection.