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[Chemical Knowledge]：Plastic duel: PVC VS polyethylene, do you know the difference between them?

Read： 1420 Time：16months ago Source：Transform the World with Simplicity

In our daily life, plastic products are everywhere. There are many kinds of plastics, among which polyvinyl chloride and polyethylene are two widely used plastics. They have different characteristics and uses, let's introduce their differences in detail.

polyvinyl chloride, referred to as PVC(Polyvinyl Chloride). Polyvinyl chloride is a colorless, transparent or yellowish solid with good corrosion resistance, electrical insulation and weather resistance. It has good toughness, high mechanical strength and high density, which makes it widely used in the fields of structural materials, construction, electronics and packaging. PVC can also be divided into two kinds of rigid PVC and soft PVC, rigid PVC is mainly used in the manufacture of water pipes, wire sleeves, etc.; and soft PVC is widely used in plastic flooring, artificial leather, medical supplies and other fields.

and polyethylene, referred to as PE(Polyethylene), is a white solid with excellent wear resistance and impact resistance. It has a lower density, so polyethylene is lighter and more flexible than polyvinyl chloride. Polyethylene is mainly divided into high density polyethylene (HDPE) and low density polyethylene (LDPE), their performance and use are different. High density polyethylene has high strength and rigidity, and is widely used in the manufacture of bottles, plastic barrels and other containers; low density polyethylene has good stretchability and flexibility, and is commonly used in plastic bags, plastic films and other packaging materials.

Generally speaking, the difference between the use of polyvinyl chloride and polyethylene is mainly reflected in the following aspects:
1. Characteristics:
polyvinyl chloride has higher hardness and higher density, while polyethylene is Relatively lighter and more flexible.
2. Uses:
PVC is widely used in structural materials, construction, electronics and packaging, while polyethylene is mainly used in container manufacturing and packaging materials.
3. Classification:
PVC can be divided into rigid PVC and soft PVC, with different application scenarios; polyethylene is divided into high density and low density, and its uses are also different.

need to be reminded that although polyvinyl chloride and polyethylene have obvious differences in some aspects, they are both common plastic products and have a certain impact on the environment. Please pay attention to garbage classification and global environmental protection when using, and use plastic products reasonably to reduce the impact on the environment.

through the introduction of this article, we believe that readers have a deeper understanding of the difference between PVC and polyethylene. When using plastic products, we should not only understand their characteristics and uses, but also abide by the principles of environmental protection and jointly protect the earth's environment.

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