Plastic is just a generic term, not a compound, but a variety of generic terms, including six types of PE, PP, PS, PVC, ABS, PA. They are all called plastics, but they are completely different, depending on their characteristics the use of. Like medical containers, PE is generally used, and many foods are made of PP. There are also illegal merchants using PS and PVC to make poisonous lunch boxes. Let’s briefly explain these six characteristics.
PE is a polyethylene plastic with stable chemical properties. Generally, food bags and various containers are made. It is resistant to acid, alkali and salt water, but it should not be wiped or soaked with strong alkaline detergent.
PP is a polypropylene plastic. It is non-toxic and tasteless. It can be immersed in boiling water at 100 ° C without deformation and damage. Common acids and alkali organic solvents have little effect on it. Mostly used for utensils.
PS is a polystyrene plastic, which is easy to color and has good transparency. It is mostly used for making lampshades, toothbrush handles, toys, and electrical components. It is resistant to acid and alkali corrosion, but easily soluble in organic solvents such as chloroform, dichloroethylene, and banana water.
PVC is a polyvinyl chloride plastic with bright color, corrosion resistance, and durability. Due to the addition of some toxic auxiliary materials such as plasticizers and anti-aging agents in the manufacturing process, its products generally do not store food and drugs.
ABS is a plastic polymer made of acrylonitrile, butadiene, and styrene. It is eye-catching, heat-resistant, strong, and can be plated with metal films such as chrome and nickel. Wait.
PA is a nylon plastic. Its characteristics are tough, strong, and abrasion resistant. It is often used to make combs, toothbrushes, clothes hooks, fan bones, net bag ropes, fruit packaging bags, etc. Non-toxic, but not in contact with acids and bases for a long time.