Building energy conservation promotes the rapid development of the external thermal insulation industry
With the rapid development of urbanization in China, the scale of housing construction is increasing, and the proportion of building energy consumption in total energy consumption has increased year by year. It has increased from 10% in the late 1970s to 27.6% now. The heating energy consumed by heating heating accounts for 60% of the building energy consumption. Since the mandatory implementation of building energy conservation in 1997, China has already transitioned from the indicator of energy saving 30% to more than 170 cities must achieve the target of energy saving 50%, of which Beijing and other places have taken the lead in implementing the 65% energy saving mandatory requirements.
In the "General Principles of Civil Building Design" (JGJ37-87), it is stipulated that the durability of the main structures of important buildings and high-rise buildings is 100 years, and that of general buildings is 50 years to 100 years. The National Unified Standard for Reliability of Building Structures (GB50068-2001) promulgated by the State stipulates that the design life of monumental buildings and particularly important architectural structures is 100 years. In fact, the service life of urban residences in our country is quite common in less than 50 years. One of the main reasons for the shortened life span of a considerable number of building structures is that because of the irrational structure of the thermal insulation layer, the cracking and seepage of the wall will directly affect the main structure of the residence.
2000-2015 is the middle and late period of the peak period of China's architectural development. According to statistics, China's newly built construction area after 2000 was twice as high as that of the 1980s and reached 1.6 billion to 181 million square meters per year. If we increase at this rate, by 2020 China’s new construction area will reach 20 billion square meters. Assuming that the service life of a building with insulation practices within a wall is calculated over 20 years, the service life of the mixed heat preservation building inside and outside the wall is calculated from 10 to 15 years. If 50% of the newly added buildings do not use a reasonable type of insulation, Then in less than 40 years, there will be more than 10 billion square meters of rubbish building on the market.
In response to the characteristics and problems of exterior cladding of buildings, China's architectural exterior materials market has undergone tremendous changes in recent years, from commonly used coatings and tile finishes to new types of flexible load-inhibiting paints , colored decorative mortars , and flexible tiles. , porcelain stone paint and real stone paint and other products. Among them, the elastic lacquer has the functions of hydrophobic self-cleaning, elastic repair , breathable breathability , etc. The color decorative mortar has the characteristics of natural color texture, low comprehensive cost, never fading, and convenient construction; the flexible decorative tile is light, thin, and economical. Good, weather resistance, waterproof breathable , never fade and so on. The introduction of these new products has various degrees of protection of the external wall insulation system, extending the service life of the system.