The role of polyurethane direct buried insulation pipe in energy saving
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With the acceleration of China's economic and social development and urbanization, building energy is continuing to rise rapidly, and its share of energy consumption in the whole society is increasing. Experts expect to increase from the current 27% to 35% in 2020. about. If this situation cannot be reversed as soon as possible, it will pose a serious threat to China's national economy, energy security and the ecological environment.
At present, the technology, materials and products in China's energy-saving construction market are seriously inadequate. Experts believe that this is mainly manifested in: poor innovation ability, research and development of new technologies and new products are relatively lagging, it is difficult to form mainstream products and technologies; walls that achieve energy-saving performance The supply of thermal insulation materials is seriously insufficient and the variety is single. At present, such as insulation materials, only polystyrene, rock wool and other varieties, if the new residential buildings in the north and transition areas are built according to energy-saving standards, the annual demand is 40 million cubic meters; due to poor information diffusion, can determine the market demand Investment entities such as developers and owners do not understand the relevant information on building energy efficiency, making it difficult to make investment decisions. Therefore, the Ministry of Construction and other relevant departments have repeatedly emphasized the need to promote the research and promotion of energy-saving complete sets of building envelope structures, especially to develop various energy-saving walls, roofs, doors and windows suitable for different climatic conditions, especially for exterior insulation technology. And high-efficiency energy-saving window technology, the development of a variety of new high-efficiency energy-saving wall materials, thermal insulation materials and high-performance architectural glass.
Energy conservation is China's basic national policy. Building energy conservation is an important part of national energy conservation work and an important measure to implement sustainable development strategies. Comprehensively promoting building energy conservation is conducive to ensuring sustained, stable and rapid development of the national economy, reducing greenhouse gas emissions, reducing air pollution, and improving people's living and working environment. In building energy conservation, thermal insulation of external protective structures is a crucial link, and the core problem is often the selection of thermal insulation materials and supporting technical systems. As a highly efficient insulation material, polyurethane has already entered thousands of households. For many years, all refrigerators have been made of polyurethane for insulation, and their efficiency has been proven and obvious.
As a high-efficiency insulation material, polyurethane direct-buried insulation pipe will play a huge role in the realization of the third building energy-saving goal in China. At the same time, the latest polyurethane application technology in foreign countries is worth learning. The use of polyurethane as a wall insulation material, in addition to its outstanding mechanical and chemical properties, is mainly due to its energy saving. The additional cost of rigid polyurethane foam will be substantially offset by a significant reduction in heating and cooling costs.
In addition, energy savings will also reduce carbon dioxide emissions, thereby reducing the greenhouse effect, and thinner insulation can also increase the available area inside the building, which is particularly attractive for cities with increasingly expensive land prices. Polyurethanes are the abbreviation for polyurethanes in developed countries. Soft, semi-rigid and rigid polyurethane foams can be made according to the different raw materials used and the formulation changes. Rigid polyurethane foam is mostly used in building insulation, and its application is quite extensive worldwide.
Many countries in the world have different standards for energy consumption of residential buildings. The implementation of this standard limits the application of other insulation materials to varying degrees. Especially in western developed countries, rigid polyurethane foam has occupied the field of building insulation. The dominant position. Because polyurethane has unmatched properties of other materials, it is widely used in the insulation of roofs, walls, ceilings, floors, doors and windows of buildings in developed countries.
This article is reproduced from Langfang Zhongyang Insulation Materials Co., Ltd.: http://