Polyvinyl Chloride (PVC) The terms PVC and vinyl are commonly used not only for polymer reference but for all materials of which polyvinyl chloride is a constituent. Polyvinyl chloride is a plastic with unlimited uses. It is currently one of the most valuable products in the petrochemical industry. Generally, more than 50% of man-made PVC is used in construction, because PVC is cheap and easy to assemble. It becomes.
In recent years, PVC has replaced traditional building materials such as cement and pottery in many areas. Despite the emergence of an ideal building material, there are still concerns about the cost of PVC for the natural environment and health. There are humans. Many uses for PVC include vinyl siding, magnetic card marking, vertical window cutting, phonograph records as the source of naming for vinyl records, pipes, plumbing, ducts and fixtures, inexpensive bags, windows It is dark (without visibility) and in its soft form for clothes, furniture or interior accessories [Plica-PVC pipe] such as curtains, flooring and roof construction, electrical cable shells, light play balls.
It is also a material that is often used for water and sewage piping due to its natural cheapness and flexibility.
PVC is a hard plastic that becomes soft and flexible by the addition of lubricants. The most commonly used is phthalate. Prior to the twentieth century, Russian chemists Ivan Strae Mislensky and Fritz Klit of the German company Grisham Electrochemistry both tried to use PVC in commercial products, but problems with the process, hardness and sometimes fragility of the polymer thwarted their efforts. He was leaving. In 1926, BF Goodrich of Waldo Simon developed a method of softening PVC by mixing it with various additives. The result was flexible materials that were easy to process and soon became popular in commercial applications.
Vinyl Chloride Monomer In the late 1960s, Dr. John Gritch and Dr. Maurice Johnson were the first to clearly identify the carcinogenicity of vinyl chloride monomer in humans when tested on workers in the vinyl chloride polymerization circle at BF Good Rich. It is believed that most vinyl products are generally harmless when used properly, although a number of additives and softeners can leak from the vinyl product, even though PVC soft toys have been made for babies for years. There is a concern that these additives may leak from soft toys into the mouths of children who take them into their mouths.
PVC products can penetrate harmful when burned or buried. In January 2003, the European Union imposed a ban on six types of emollient phthalates in toys. In 2006, the US Consumer Product Safety Commission rejected a petition for similar sanctions in the United States. In the United States, however, most companies have voluntarily discontinued PVC toys for infants