How does oil become a plastic product?

The plastics industry includes three parts: resin production, plastics production, and plastics production.

The manufacturing process of the resin is to connect many small molecule raw materials (monomers) through a polymerization reaction to become a macromolecular compound. If divided by monomer composition and structural change, the polymerization reaction can be divided into polyaddition reaction and polycondensation reaction.

The reaction of addition polymerization of monomers is known as polymerization, such as polyethylene, which turns on the double bonds of ethylene (monomer) and allows each ethylene molecule to "hand in hand" to form polyethylene. Polycondensation reaction is in the course of the reaction, in addition to the formation of high polymers, but also produce low molecular weight water, alcohol, ammonia and other side products.

How does resin become plastic? In today's society, higher and higher requirements are imposed on plastic products. For example, using a single synthetic resin to make plastics is difficult to meet diversification and high quality requirements at the same time. Therefore, the “modified” method is generally adopted, various additives are added to the synthetic resin, and the properties are changed, so that a single type of resin having a limited variety becomes a new type of material with excellent performance.

The final step in the plastics industry is plastic molding, which turns plastic into a shaped object or setting material. The plastic molding process is roughly as follows: First, the polymer pellets or powders are converted into plastic flow dynamics, generally by heating and melting or forming a solution, emulsion or paste, and then the flowing plastic is filled into the mold cavity, or cast into Membrane, or spinneret spinneret, etc., after the formation of condensation curing. Fibers and films are further processed by stretching, annealing, quenching, etc., in order to achieve a stable product shape and the required performance. It can also be seen from here that the resin can be made into plastic products as well as fibers.