The main component of PET core foam plastic is polyethylene terephthalate, commonly known as polyester resin. PET foam is a kind of closed-cell thermoplastic structural foam, which has certain shear and compression strength, so it is often used as the core material of sandwich structure. It is widely used in construction, road transportation, rail transportation, aviation, communication, wind power, etc. field. PET foam is a closed-cell thermoplastic structural foam, suitable for all resin systems and process technologies.
As the core material of composite sandwich structure, the mechanical properties of the PET foam core material are related to the foam density. The higher the density, the better the mechanical properties, but at the same time the greater the weight, the more materials needed and the higher the cost. The fatigue resistance of PET foam core material is also better, which is better than that of some PVC foam core materials. Convenient processing: through thermoforming, a complex body structure can be realized, and the thermal stability is good under heating; it has good shear and compression properties.
In the production process, leftovers and chips can be reused to make new materials. Traditional PET foam uses fluoride as a foaming agent during production, which will have a certain impact on the environment and human health. However, the latest PET core foam foaming technology can use carbon dioxide generated during the production process as a foaming agent. Therefore, zero emission of greenhouse gases can be achieved, which is very beneficial to environmental protection. During the processing, it can withstand a temperature of about 150°C for a short time, and can withstand a temperature of about 100°C for a long time during the service life.