Is pet plastic bottle poisonous for a long time
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Is pet plastic bottle toxic in long-term use

  • Release date: 2021-05-25 09:35 reading times: 429
  •   Pet plastics, such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), are the main types of pet plastics. Pet is highly symmetrical in molecular structure and has a certain ability of crystal orientation, so it has high film-forming and forming properties. Pet has good optical properties and weather resistance, and amorphous pet has good optical transparency.
       In addition, pet has excellent wear resistance, friction, dimensional stability and electrical insulation. PET bottles are widely used because of their high strength, good transparency, non-toxic, impermeable, light weight and high production efficiency. The molecular chain structure of PBT is similar to that of pet, and most of its properties are the same. However, the main chain of PBT is changed from two methylene groups to four, so the molecules are more flexible and the processability is better.
       The main uses of poly (terephthalic acid) plastics are as follows: film sheet materials: all kinds of food, medicine, non-toxic and aseptic packaging materials; High grade packaging materials for textiles, precision instruments and electrical components; The base materials of audio tape, video tape, film, computer floppy disk, metal coating and photosensitive film, etc; Electrical insulation materials, capacitor films, flexible printed circuit boards and membrane switches and other electronic and mechanical fields.

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