pet is polyethylene terephthalate, non-toxic, tasteless, good health and safety, can be directly used for food packaging.

pet is prepared by transesterification of dimethyl terephthalate with ethylene glycol or esterification of terephthalate with ethylene glycol, and then polycondensation. It is a crystalline saturated polyester, milky white or light yellow, highly crystalline polymer with smooth and glossy surface. It is a common resin in life and can be divided into APET, RPET and PETG.

Extended data:

Properties of pet:

1, the thermal deformation temperature and long-term use temperature are the highest in thermoplastic general engineering plastics

2, because of the high heat resistance, the enhanced PET is impregnated for 10S in the solder bath at 250 ° C, almost without deformation or discoloration, especially suitable for the preparation of solder electronic and electrical parts.

3, the bending strength is 200MPa, the elastic modulus is 4000MPa, the creep resistance and fatigue are also very good, the surface hardness is high, the mechanical properties are similar to thermosetting plastics.

4, because the price of ethylene glycol used in the production of PET is almost half cheaper than that of butanediol used in the production of PBT, PET resin and reinforced PET are the lowest price among engineering plastics, and have a high cost performance.