It is understood that most of the polystyrene plastic particles are used at one time. After millions of tons of white garbage are discarded, they are placed in the natural world. They can neither be rotted and transformed, nor can they be explained by themselves, thus forming a serious environmental pollution on the one hand. On the other hand, it is also a waste of valuable non-renewable resources. How to effectively recycle used polystyrene foam has attracted the attention of researchers in various countries.
At present, the recycling and recycling of waste polystyrene foam is carried out by crushing, melting and re-granulating into another material particle, and then adding a corresponding non-adjuvant to be processed into another material. For the above-mentioned recycling and recycling method, the common practice is to crush, melt, pull, cut, etc. the plastic foam through the crusher, but in the method of producing the plastic pellet, there is an incomplete pulverization of the raw material, and the temperature control of the melting It is uneven, and impurities that are mixed in the raw materials cannot be avoided, which results in extremely low production efficiency and damage to the equipment due to the presence of impurities.
Polystyrene plastics can only be used in a single-use situation, which is a huge burden on the environment. Therefore, new recycling methods are urgently needed.
Polystyrene plastic refers to a polymer synthesized from a styrene monomer by a radical addition polymerization reaction. It is a colorless and transparent thermoplastic with a glass transition temperature above 100 ° C, so it is often used to make a variety of disposable containers that need to withstand the temperature of boiling water, as well as disposable foam lunch boxes. Because of its good water resistance, thermal insulation, insulation, low moisture absorption and strong seismic strength, and its light weight, strong, easy to form, low price, it is widely used and packaged, moisturizing, waterproof, and separated. Heat, shock absorption, decoration, catering and other fields have penetrated into various sectors of the national economy.
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