Plastic: plastic material, the so-called plastic refers to the external force of the deformation occurs, the external force can be maintained after the abolition of the state of force. The elastic modulus of plastic is between rubber and fiber, and it can deform in a certain way. Soft plastics close to rubber, hard plastics, close to fiber.
Plastics are synthetic polymers that change the shape of a body freely. The plastic is made of synthetic or condensation polymerization with monomer raw materials, composed of synthetic resin and filler, plasticizer, stabilizer, lubricant, pigment and other additives, it is the main component of synthetic resin.
Plastic refers to the resin (or in the process of using monomer polymerization) as the main ingredient, such as plasticizers, fillers, lubricants, additives such as colorants as auxiliary components, can flow in the process of forming materials.
Using petroleum as raw material; transporting the crude oil to the petroleum processing plant for dehydration and desalination, and then fractionating it into various fuel oils such as gasoline, kerosene, diesel, etc.. The preparation of plastic raw materials to a called cracking of oil processing oil, first producing ethylene and propylene raw gas, and then the addition polymerization is made: this material called polyethylene and polypropylene resin. Then hot processing is made of various materials called polyethylene plastics and polypropylene plastics
