How is PVC board made? I believe you are also interested in this question, so let's tell you the answer to this question. Please see the following summary:
The chemical methods for manufacturing PVC sheets include using simple units called monomers, and connecting these monomer molecules together in the polymerization process to form long molecular chains (also known as macromolecules) called polymers.
This is the case with PVC sheets, which are made of vinyl chloride monomer and are usually known by polymerization of their initial VCM. Some monomers exist in the form of reactive gaseous chemicals, and some of these monomers may cause health hazards when in direct contact with humans. In these cases, they are produced and processed under strict control to protect health.
On the other hand, polymers such as PVC are made of monomers through polymerization, which are solid and chemically stable substances, so they do not affect human health. VCM is the raw material of PVC. It is a gas at ambient temperature, but it is usually stored as a liquid under pressure. Ethylene and chlorine are raw materials of PVC.
Through the thermal cracking of naphtha or natural gas, the basic petrochemical industry produces ethylene and propylene, etc. Naphtha is mainly supplied by the petroleum refining industry, which uses crude oil as raw material. The chlor alkali industry uses industrial grade salt as the main raw material to produce caustic soda, chlorine and hydrogen by electrolysis.
In the first stage of PVC board production process, ethylene and chlorine are mixed to produce an intermediate product called dichloroethane; It is then converted to vinyl chloride, which is the basic component of PVC or PVC. The "polymerization" process links vinyl chloride molecules together to form PVC chains. PVC produced in this way is in the form of white powder. This is not used alone, but mixed with other ingredients to provide the formulation of various products.
Most PVC board plastics are mainly composed of carbon and hydrogen. PVC differs in that it contains chlorine (about 57% by weight) as well as carbon and hydrogen. The presence of chlorine in the molecules makes PVC particularly versatile because it makes it compatible with a variety of other materials. Chlorine content also helps to make PVC flame retardant. It can also be used as a "marker" to distinguish PVC in the plastic recycling automatic sorting system. PVC formulations can be shaped through a variety of technologies and can be made into product forms with very little energy. PVC polymer is chemically stable, neutral and non-toxic. PVC formulations have a wide range of applications, including sensitive applications such as medical equipment, as well as construction, automotive and cable.
