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[Chemical Knowledge]：In-depth understanding of PET, explore its birth and application

Read： 906 Time：23months ago Source：Transform the World with Simplicity

PET (polyethylene terephthalate) is a common plastic material with high strength, high rigidity and excellent chemical resistance. It is widely used in food, beverage, medical, electronics, textile and other fields. So, what is PET, and what is its birth?

PET was first invented in the UK, and its inventor Wallace Carothers is a researcher at DuPont. In the 1930 s, he used the reaction of terephthalic acid and diethyl ester to synthesize polyethylene terephthalate, the material we now call PET. However, due to the difficulty and cost of the process, PET was not widely used.

to the 1950 s, PET production technology has been further improved, coupled with its good mechanical properties and thermal stability, PET began to be widely used in various fields. With people's attention to environmental issues, the application of recyclable PET has gradually become the mainstream. For example, PET can be recycled into new PET bottles, fibers and carpets, and the performance of the recycled PET material can still be maintained at a high level. The excellent performance of

PET makes it widely used in food, beverage, medical, electronics, textile and other fields. Among them, food packaging is one of the main application areas of PET. PET bottles because of its transparent, lightweight, strong, easy to produce and recycling and other advantages and become the beverage, juice, water and other food and beverage packaging materials of choice. In addition, PET is also used in the manufacture of medical devices, electronic components, artificial hair and fiber and other fields.

Although PET has good performance and wide application prospects, it also has some environmental protection problems. For example, with the widespread use of PET, waste water, waste gas and waste solids generated by its manufacturing process have a negative impact on the environment. Therefore, reducing the production cost of PET and improving its recycling rate have become an important direction for the development of PET industry.

To sum up, PET, as a common plastic material, has excellent performance and wide application prospects. We should deeply understand the nature, manufacturing process and application of PET, improve the recycling rate of PET, and make our own contribution to the realization of sustainable development.

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