PVC is a member of the family of polymers and copolymers, all of them having a common vinyl group (-CH2-CH). This material is a
Material name (Farsi): Polyvinyl chloride
The name of the substance (English): Polyvinyl chloride
Brand (Persian): PVC
Brand (English): PVC
Other names: Ethylene
PVC is a member of the family of polymers and copolymers, all of them having a common vinyl group (-CH2-CH). Polyvinyl chloride is plastic with unlimited use. In the present situation, it is one of the most valuable products of the petrochemical industry. More than 50% of PVC is used in building human construction because PVC is cheap and easily aligned. In recent years, PVC has replaced traditional building materials such as cement and pottery in many areas. Despite the advent of an ideal material in the building, there are still concerns about the cost of PVC for the natural environment and human health. The polymer has a good growth rate in terms of production. For the most important reasons, this is a huge variety of polymers. PVC can be used as a high-strength plastic or mixed with a variety of softeners, flexible plastic. In the production of blood bags that are used extensively and vital, this polymer is used. Because of its high resistance to the polymer, it is also flexible. The advantages of this polymer are its good resistance to fats, oils and acids and bases. It also has good electrical properties and is resistant to flame. In addition, PVC is resistant to water. Finally, the most important advantage of this polymer compared to other plastics is the unique quality that makes it easy to mix with a variety of plasticizers, making the plastic products the most difficult to form the most flexible form. Such a variety does not show any other plastic. PVC is produced in two major categories: hard and flexible type, if a PVC is not mixed with a softener or mixed with a small amount, a hard and hard plastic is obtained. The field of use is a hard type of polymer, pipe, and structural fittings, as well as use in external coatings and building patches. Hard PVC is consumed in cases such as sewage pipes, gutters, sealant tires and car window parts, credit cards and windproof molds for bottles. Flexible PVC applications are diverse. It is the use of this polymer to produce all types of wallpapers and films to produce sheets and films. Other uses include swimming pool layouts, swaddling toys, garden hoses, bathroom curtains, desktops and more. At present, the global consumption of this polymer is 27.4 million tons, which is equivalent to 16 percent of the consumption of basic polymers. By 2013, the total consumption of this polymer is expected to be about 38.8 million tonnes. The survey of production capacities and global PVC consumption between 1990 and 2001 showed an average annual growth of 4.5%. Before the twentieth century, Russian chemist Ivan Stra Mielsensky and Fritz Kallet of Grisham, Germany's electron chemistry, both tried to use PVC in commercial products, but the problems in the process, the hardness and sometimes the fragility of the polymer did not end their efforts. In 1926, Waldo Simon of Beef Goodrich developed a way to soften PVC by mixing it with various additives. The result was a flexible element that simply participated in processes and soon became prevalent in commercial use. P.V.C was produced before the Second World War in the form of a test in the years 1943-1942. But after the war, the development of P.V.C. Development and expansion Today, P.V.C is produced in many countries from the world.
In the late 1960s, Dr. John Grace and Dr. Morris Johnson were the first to identify human carcinogenesis when they tested monomer vinyl chloride on vinyl chloride polymerization workers at the BF Goodyear Rich. It is believed that most Vinyl products are generally harmless when properly consumed.
The types of PVC are summarized in the following ways. 1) Polymerization; 2) Bulk polymerization
3- Emulsion polymerization 4- Suspended polymerization
In the production of pipes, cable fittings, hoses, plugs, shoes, flooring, toys, etc. are used.
A little hazardous, at high concentrations, stimulate the eyes. The ingestion of this substance causes gastrointestinal irritation, nausea.Respiratory poisoning