Advantages and disadvantages of PVC

What is PVC advantage?

   PVC is a vinyl polymer material, and its material is an amorphous material. In practical use, PVC materials often add stabilizers, lubricants, auxiliary processing agents, pigments, impact resistance agents and other additives. It has non-flammability, high strength, weather resistance and excellent geometric stability. PVC is very resistant to oxidizing agents, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons. In addition, the term person vs computer in the game is abbreviated as PVC, and PVC human figures are often abbreviated as PVC, etc.

What is PVC disadvantage?

   Polyvinyl chloride is also a commonly used plastic, which is a resin composed of polyvinyl chloride resin, plasticizer and anti-aging agent, and is not toxic by itself. However, the main auxiliary materials such as plasticizers and antioxidants added are toxic. The plasticizers in daily PVC plastics mainly use dibutyl terephthalate, dioctyl phthalate, etc. These chemicals All are toxic, and lead stearate, an antioxidant for polyvinyl chloride, is also toxic. Lead will be precipitated when polyvinyl chloride (PVC) products containing lead salt antioxidants come into contact with ethanol, ether and other solvents. Polyvinyl chloride containing lead salt is used as food packaging and when it encounters fried dough sticks, fried cakes, fried fish, cooked meat products, cakes and snacks, lead molecules will diffuse into the oil, so polyvinyl chloride plastic bags cannot be used. Contained food, especially not oily food. In addition, polyvinyl chloride plastic products will slowly decompose hydrogen chloride gas at high temperature, such as about 50 ℃, which is harmful to human body. Therefore, polyvinyl chloride products are not suitable for food packaging.

  PVC is a major source of dioxins. Dioxin (TCDD), the deadliest substance in the dioxin family, is a well-known carcinogen and hormonal decomposer and a toxic compound that is very harmful to humans and animals. Dioxins are produced when PVC is produced, recycled and disposed of in incinerators, or when PVC products are accidentally burned, such as in landfills.