The History Of Polyvinyl Chloride

Multifunctional Pvc Hoarding Polyvinyl chloride was discovered by V. Renault of the United States as early as 1835. Multifunctional PVC hoarding When vinyl chloride is irradiated with sunlight, a white solid, namely polyvinyl chloride, is formed.

Hidden PVC Hoarding PVC was discovered twice in the 19th century, once by Henri Victor Regnault in 1835 and again by Eugen Baumann in 1872. On both occasions, the polymer appeared as a white solid in a beaker of vinyl chloride held in sunlight.Hidden PVC Hoarding In the early 20th century, Russian chemist Ivan Ostromislensky and chemist Fritz Klatte of the German company Griesheim-Elektron simultaneously tried to use PVC for commercial purposes, but the difficulty was how to process this hard, sometimes brittle polymer.
Hidden PVC Hoarding In 1912, the German Fritz Klatte synthesized PVC and applied for a patent in Germany, but was unable to develop a suitable product before the patent expired.
In 1926, Waldo Semon of the B.F. Goodrich Company in the United States synthesized PVC and applied for a patent in the United States. Waldo Semon and the B.F. Goodrich Company developed a method of plasticizing PVC by adding various additives in 1926, making it a more flexible and easier-to-process material that soon became widely used commercially.
In 1914, it was discovered that organic peroxides could be used to accelerate the polymerization of vinyl chloride. In 1931, the German French company used emulsion polymerization to realize the industrial production of polyvinyl chloride. In 1933, W.L. Simon proposed that PVC could be processed into soft polyvinyl chloride products by heating and mixing high-boiling point solvents and tricresyl phosphate with PVC. This was a real breakthrough in the practical use of PVC. Hidden PVC Hoarding The British Burnemann Chemical Industry Company, the American Union Carbide Company and the Goodrich Chemical Company almost simultaneously developed the suspension polymerization of vinyl chloride and the processing application of PVC in 1936. In order to simplify the production process and reduce energy consumption, the French Saint-Gobain Company developed the bulk polymerization method in 1956. In 1983, the world's total consumption was about 11.1Mt, and the total production capacity was about 17.6Mt; it was the second largest plastic variety after polyethylene production, accounting for about 15% of the total plastic production. China's self-designed PVC production device was put into trial production at Jinxi Chemical Plant in Liaoning in 1956. In 1958, the 3kt device was officially put into industrial production, with an output of 530.9kt in 1984.
PVC was industrialized in the early 1930s. Since the 1930s, PVC production has ranked first in the world's plastic consumption for a long time. In the late sixties, polyethylene replaced polyvinyl chloride. Although polyvinyl chloride plastic has relegated to second place, its output still accounts for more than a quarter of the total plastic output.

Before the 1960s, the production of monomer vinyl chloride was basically based on calcium carbide acetylene. Since the production of calcium carbide requires a large amount of electricity and coke, the cost is high. Anti-corrosion PVC Hoarding After the industrialization of ethylene oxychlorination to produce vinyl chloride in the early 1960s, countries turned to cheaper petroleum as raw material. In addition, since a large part of the raw material of polyvinyl chloride (about 57% by weight) is chlorine gas, an inevitable by-product of the alkali production industry, Anti-corrosion PVC Hoarding is not only a rich source of raw materials, but also one of the most important products for developing the chlor-alkali industry and balancing chlorine gas. Therefore, although the proportion of polyvinyl chloride in plastics has declined, it still maintains a high growth rate.
Anti-corrosion PVC Hoarding plastic products are widely used, but in the mid-1970s, people realized that the residual monomer vinyl chloride (VCM) in PVC resins and products is a serious carcinogen, which will undoubtedly affect PVC plastic products to a certain extent. Development of vinyl chloride. However, people have successfully reduced the residual VCM by adding spiral plate heat exchangers [10] and other means, so that the VCM content in PVC resin is less than 10 ppm, meeting the requirements of sanitary grade resin, and expanding the application scope of PVC. It can even make the VCM content in the resin less than 5ppm, and very little VCM remains after processing. It is basically harmless to the human body and can be used as food and drug packaging and children's toys.