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Planning and development trend of energy-saving insulation materials in external wall insulation
2019-01-09 09:33:17

   In the total energy consumption, the external wall heat loss accounts for 32.1%~36.2%. Therefore, an important part of modern construction is to improve the insulation function of the wall. In the construction of the structure, thermal insulation treatment, and then reduce the energy consumption, not only reduce CO2 emissions, SO2 and prevent non-renewable resources, but also improve the comfort of living, in order to maintain the global environment on which people live every day. In this paper, Guangdong Jiefu Energy Conservation focuses on the use planning and occupational trends of energy-saving insulation materials in the construction of external walls.

First, career outline

       The exterior wall insulation products originated in Europe in the 20th century. They were used to compensate for wall cracks. In the actual application process, this composite wall data has outstanding thermal insulation function and saves energy.

       Subsequently, the United States introduced such products in the 60th era, and combined with the specific climate and environment characteristics of the country to carry out revolutionary innovation, and did a lot of fundamental research work. After the 1970s, some economically prosperous regions in Asia and Europe also paid great attention to the research and development and use of construction materials, and carried out identification and identification of construction materials and thermal insulation materials, and forced the construction industry to implement energy conservation regulations in new construction. The formulation of wall insulation and energy conservation standards is now the top priority of countries in formulating energy conservation policies.

       China's energy-saving occupation has gone through a curved and repeated development since the last century. In the 80s-90s of the 20th century, aerated concrete, hollow blocks and other self-insulating walls were put into use. In order to reduce the energy consumption for the construction of external walls, the plans for the construction of energy-saving “Ninth Five-Year Plan” and “Tenth Five-Year Plan” were formulated in 1995 and 2000, and the development guidelines, priorities and methods for energy conservation were deployed. On March 14, 2011, the Ministry of Public Security's "No. 65 Document" stated that the civil construction external thermal insulation materials should be included in the construction project fire protection planning review, fire inspection and deposit inspection planning; it is necessary to use the combustion function for civil construction of external thermal insulation materials. data. Under the guidance of such a series of energy-saving policies, regulations, norms and compulsory provisions, the energy-saving work of residential construction in China has been deepened, energy-saving regulations have been continuously improved, and many new energy-saving technologies and materials have been introduced and developed. use.

Second, the professional status and planning

      As a professional subdivision of the construction industry, the construction of the anti-corrosion and thermal insulation of the external wall is closely related to the development trend of the construction industry in China. For a long time, the position of the construction industry in our national economy has been outstanding. In 2012, the total output of China's construction industry reached 13.72 trillion yuan. During this period, the compound growth rate of construction industry in 2008-2012 was as high as 21.97%. On March 14, 2011, the “No. 65 Document” of the Ministry of Public Security of the People's Republic of China proposed that “the data for the construction of external thermal insulation materials for civil use must use the combustion function”, and then further select the “New No. 46 Document” to promote the construction of energy-saving insulation for external walls. The launch.

      According to incomplete statistics, China's six provinces and one city in East China, including Shandong Province, Fujian Province, Jiangxi Province, Zhejiang Province, Jiangsu Province, Anhui Province, Shanghai, the city's new construction area is about 220 million m2 per year, energy-saving needs The reconstructed urban construction area is about 120 million m2 per year. The two calculations total 340 million m2, and the external wall insulation materials required for energy conservation are about 122.4 million m2 per year. A certain province, including the primary city and some prefecture-level cities, has a newly built construction area of about 40 million square meters per year. The urban construction area required for reconstruction is about 20 million square meters per year. The external wall insulation building materials needed for energy conservation are about every year. At 21.6 million m2, this product has an outstanding market prospect.

      Relative to the favorable policies and the improvement of citizens' awareness of energy conservation, the real estate occupation has been affected by the macro-control of occupational China and the economic downturn, and the growth rate of the total occupational output has slowed down. The total output of the construction industry in 2014 was 17.67 trillion, the annual growth rate. Only 10.1%. Following the slowdown in the construction industry, the construction of the construction project has been significantly reduced. In 2014, the output of China's construction projects was 15.71 trillion, an increase of only 11.33%, which directly affected the development of the energy-saving insulation industry for the construction of external walls.


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