Environmental Impact And Optimization Of External Thermal Insulation Materials

In the increasingly popular building decoration,due to the abuse of building materials caused by the construction of air pollution problems seriously affect people's health and the pursuit of quality of life,This series of problems has aroused the concern of many industry and the public.The construction of air pollutants not only a wide range of sources,types,and almost impossible to eliminate in a short period of time,the total volatile organic compounds(TVOC)as a typical one,has the characteristics of wide source,volatile and release cycle length,is one of the important indexes to measure the air pollution in buildings,and the mechanism of its release is not very clear.In this paper,the release law is studied by model method and experimental method.Eighty percent of the building materials are containing organic hazardous substances,in the early days of building decoration,building materials once given off a large number of sporadic noxious VOC,coupled with the building ventilation is not timely,accumulated in the air to a certain concentration,is bound to threaten the health of users.The emission mechanism of VOC from building materials was studied theoretically and experimentally.This paper selected five kinds of building materials to study release of concentration level and pollution characteristics and energy-saving system Comprehensive characteristics and so on.This paper mainly on the two points:1.discussion on energy-saving materials,improve the release model,study on releasing of volatile model,2.In combination with the actual building on fuzzy evaluation method to comprehensive evaluation of the composition of energy-saving system,energy consumption and maintenance costs(for maintenance costs are not given directly and to apply unascertained mathematical theory to determine)and so on.The study found that the release of foam concrete is much lower than the national harmful concentration range,the insulation system is also a comprehensive,the lowest energy consumption of polyurethane.In addition,according to the pollution situation given control and reduce TVOC methods and recommendations.This paper studies the pollution situation and comprehensive evaluation database of typical pollution index of building materials,and analyzes the comprehensive nature of materials and energy-saving systems,provides scientific basis and theoretical support forunderstanding the release law of volatile organic compounds and controlling the air pollution of building materials,and also facilitate people to better choose energy-saving insulation materials and systems.