Waste PET (polyethylene terephthalate) degrades severely after one or more treatments. If no measures are taken to compensate for direct use in production, the processing performance and the product produced will be affected. The mechanical property will be very poor, the appearance is yellow, can not meet the use requirements, leading to deterioration of polyester performance, reduce the characteristic viscosity of polyester, discoloration, carboxyl group increase, can not meet the use requirements.
At the same time, because PET glass transition temperature and melting point is relatively high, mold temperature is high, crystallization speed is slow and decreases with the increase of molecular weight of resin, so the crystal structure is not uniform, the molding process is difficult, the molding cycle is long, the product surface is rough and shiny. The disadvantages of poor strength, poor impact toughness and high water absorption greatly limit the secondary utilization efficiency of PET.
This example uses waste PET material to prepare PET toughening material, by adding additives made PET toughening material, can prepare good mechanical properties, good impact resistance, good folding performance, oil resistance, fat resistance, acid and alkali resistance and other excellent properties of PET toughening material. With organic solvent, high temperature and low temperature resistance, non-toxic, tasteless, good transparency PET material.
Post time: Jan-06-2023