Plastic is a rubber particle obtained by polymerizing petroleum refining products and certain chemical elements. It is processed by various producers into various plastic products with different shapes, which are widely used in various industries and daily life. Classification of plastics: After processing and heating, plastics can be divided into two categories: hot plastic and thermosetting.
Commonly The following types:
1). PVC-polyvinyl chloride
2).PE-polyethylene, HDPE-high density polyethylene, LDPE-low density polyethylene
3). PP-polypropylene
4). PS-polystyrene
5). Other common printing materials include PC, PT, PET, EVA, PU, KOP, Tedron, etc.
Simple resolution method for various types of plastics: According to different appearances:
1).PVC tape is soft and has very good extensibility. In addition, there are some hard shots that are pressed out. Quality or foaming, such as water pipes, sliding doors, etc.
2).PS, ABS, soft and brittle texture, often in the shape of the surface injection.
3).HDPE in PE is light in texture, good in toughness and opaque, while LDPE is slightly malleable.
4).PP has a certain transparency, crisp.
According to the chemical properties of the quality:
1).PS, PC, ABS can be dissolved with toluene, corroding the surface.
2).PVC is not dissolved in benzene, can be dissolved in ketone solvent
3).PP, PE have good alkali resistance and excellent solvent resistance.
