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PET material

date:2019-06-12 hits:539

PET material
PET material

The pet material can be used for a long time in the temperature range of 120 ° C. It can withstand high temperatures of 150 ° C for short-term use, can withstand low temperatures of -70 ° C, and has little effect on mechanical properties at high and low temperatures.

Pet material, English name Polyethylene terephthalate, commonly known as polyester resin, is the most important variety of thermoplastic polyester.

It is a polycondensate of terephthalic acid and ethylene glycol, together with PBT, collectively referred to as a thermoplastic polyester, or a saturated polyester. In 1946, the United Kingdom published the first patent for the preparation of PET. In 1949, the British ICI formula completed the pilot test. However, after DuPont purchased the patent, the production equipment was established in 1953, and it was the first industrialized production in the world. Initial PET is almost always used in synthetic fibers (commonly known as polyester in China). Since the 1980s, PET has made breakthroughs in engineering plastics, and has successively developed nucleating agents and crystallization promoters. At present, PET and PBT together as thermoplastic polyester have become one of the five engineering plastics. PET is classified into fiber grade polyester chips and non-fibrous polyester chips. 1 Fiber grade polyester is used in the manufacture of polyester staple fiber and polyester filament yarn. It is a raw material for processing fiber and related products of polyester fiber enterprises. Polyester is the largest variety of chemical fiber. 2 Non-fibrous polyesters are also used in bottles, films, etc., and are widely used in the packaging industry, electronic appliances, medical and health, construction, automotive and other fields. Among them, packaging is the largest non-fiber application market for polyester, and it is also the most PET growth. Fast field. As a packaging material PET advantages: 1. Good mechanical properties, impact strength is 3 to 5 times that of other films, good folding resistance. 2. Oil resistant, fat resistant, olefin resistant, dilute alkali, resistant to most solvents. 3. It has excellent high and low temperature resistance, can be used for a long time in the temperature range of 120 °C, can withstand high temperature of 150 °C for short-term use, can withstand low temperature of -70 °C, and has little effect on mechanical properties at high and low temperatures. 4. Low gas and water vapor permeability, excellent gas barrier, water, oil and odor properties. 5. High transparency, UV blocking, good gloss. 6. Non-toxic, odorless, good health and safety, can be directly used for food packaging.


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