Most of the waste styrofoam is disposable. Millions of tons of waste are thrown into nature and they are neither discomposed nor transformation. The foam can not disappear themselves, which will lead to serious environmental pollution. In addition, they are a valuable non-renewable resources. So how to effectively recycle waste polystyrene foam has attracted widespread attention of national research workers.
Current methods for waste recycling styrofoam is to crush, melt regeneration granulated particles of another material, and then adding the adjuvant are processed into another material. However, in the production of plastic granules, making such methods not completely crush the present raw materials, and melting temperature control is uneven, while unavoidable impurities mixed in the raw material, which leads to low productivity, and because the present impurities can result in equipment damage.
Polystyrene current situation can only be used one time, which caused a great burden to the environment, so the new way of recycling is imminent.
Waste polystyrene foam is defined by the styrene monomer by free radical polymerization of synthetic polymers. It is a colorless, transparent thermoplastic, has a higher glass transition temperature of 100 ℃. It is often used to make a variety of needs to withstand the temperature of boiling water disposable containers, and disposable foam lunch boxes.
Because of its good water resistance, insulation resistance, insulation resistance, low moisture absorption and strong seismic strength, its light weight, rugged, easy to shape, low prices, is widely used in packaging, moisture, water, every heat, shock, decorating, catering and other fields penetrate all sectors of the national economy.