It is reported that polystyrene foam is lightweight, and has a certain rigidity, high electrical insulation, low moisture absorption and low price and other characteristics, is widely used in machinery and equipment, instrumentation, household appliances, handicrafts and other vulnerable products Shock packaging materials, such packaging are a one-time consumption, a great amount of abandoned. With the development of China's chemical industry and other related industries, polystyrene consumption has grown rapidly, especially in recent years. With the development of electronic telecommunications industry, PSF's waste is increasing. This white garbage light weight, large size, covers an area of large, anti-aging, corrosion resistance, chemical stability, it is not easily degraded. For a long time, waste polystyrene foam and other plastics are mostly treated by incineration and burial. Incineration of the exclusion of the gas will cause secondary pollution, burial will make the land of soil deterioration. Therefore, to explore new methods is extremely important, and can get considerable economic and social benefits. So, we should think some ways to do polystyrene recycling.
In recent years, people has explored many ways in the use of waste polystyrene preparation of coatings, but mostly belong to the physical modification. Due to rigidity of polystyrene molecular chain, hard, brittle, therefore, with physical modification prepared paint often exists in the coating flexibility and poor adhesion defects, with modified resin on the polystyrene graft modification, to give the film good flexibility, adhesion, mechanical properties. Now introduced to waste polystyrene as the base material, the development of a low price, excellent performance of the adhesive and paint.
Plastic is one of the three synthetic materials, including polyethylene, polypropylene, PVC and resin, waste degradation products are also different. There are many ways to deal with waste plastics, such as: accumulation of burial method, incineration treatment, photodegradation, biodegradation, polystyrene foam gum recycling, cracking recovery preparation of gasoline, styrene monomer recovery, preparation of adhesives, coatings and so on. Among the many waste plastics, some waste plastics such as polystyrene (PS) have not yet found a suitable recycling route.