From the aspect of insulation material application, foreign application and development of insulation materials are generally better than domestic insulation materials applications. As early as in 1987, 77% of foreign insulation materials are used in the construction of the buildings. Some developed countries abroad even had already begun the research and development of building insulation materials in the late 1970s, and the government is encouraging to make the new constructions more energy-saving and environmental-friendly.
In the 21st century, building insulation material markets around the world develop rapidly, and the demand for insulation materials of construction industry is constantly expanding.
Research and development of new insulation materials has been highly paid attention due to its importance. New R & D methods and new insulation materials continuously come out. Currently a material called polystyrene being are being popular in China. Polystyrene is a kind of polymeric substance synthesized by free radical polymerization of styrene monomer. It is a kind of colorless, transparent thermoplastic with more than 100 degrees Celsius glass transition temperature. And polystyrene insulation material is widely applied in the construction of buildings, and polystyrene-based material in the constructions has outstanding performance, mainly reflected in its excellent resistance to water, moisture resistance, light weight, high hardness and moldability.
Though polystyrene materials are widely used around the world, the discarded polystyrene board float on the water or with wool board thermal conductivity wind drift because of its low specific gravity, causing damage to the landscape. According to the survey of the California Coastal Commission, polystyrene is the major ocean drifts. And if this kind of plastic materials eaten by marine organisms, it can cause damage to their digestive system.
So in terms of environmental friendly building materials, it is also need to focus on domestic environmental protection, maximize the use of existing resources and reduce environmental damage. Styrofoam insulation recycling and reuse of insulation materials is currently the need for solving the problem.