What material is plastic
Plastics are synthetic resins with high molecular weight as the main component, adding appropriate additives, such as plasticizers, stabilizers, antioxidants, flame retardants, lubricants, colorants, etc., processed plastic (flexible) materials, or A rigid material formed by curing and crosslinking.
Plastics can be divided into two types according to whether they are softened after heating: thermoplastics and thermosetting plastics. Thermoplastics have no chemical changes in their composition after heating, so they can be molded repeatedly. Such plastics include polyethylene, polypropylene, polystyrene, and polyvinyl chloride.
What is the material of glass?
The material of glass is mainly silica, containing a small amount of potassium, sodium, calcium, magnesium, boron, and other materials, which are silicate materials.
What is iron material?
Iron materials are iron-based alloys, that is, iron alloys with an iron content of more than 50%, also called iron-based materials. For example, steel, cast iron, and alloy steel are all ferrous materials.