What are the technologies for wall insulation?

Wall insulation mainly includes three technologies: internal insulation, self-preservation and external insulation, and each technology has its own advantages and disadvantages in practical application. The thermal insulation system inside the external wall, that is, placing thermal insulation materials inside the external wall, generally adopts polystyrene board, and the technology is relatively mature. Its advantages are simple construction and little influence by climate; The cost is relatively low, and the freedom of external decoration is great. The disadvantage of this technology is that the facing layer is easy to crack, it is not convenient for secondary decoration, it takes up a large indoor space and has a large heat loss. The wall self-insulation system improves the thermal insulation performance through wall materials such as aerated concrete blocks, and its principle is like bread, with holes in it. These materials have light weight and good thermal insulation performance, and are suitable for frame structure buildings. It is worth mentioning that, due to the weak strength of self-insulation materials and high requirements for application links, the phenomenon of wall cracking may occur. External thermal insulation system of the external wall, that is, the thermal insulation material is located outside the external wall. Because of its excellent thermal insulation performance, protecting the main structure, not occupying the indoor use area, not affecting the indoor decoration, and high comprehensive economic benefits, it has been widely recommended by the Ministry of Construction and relevant experts. From 2005 to 2008, the column of wall thermal insulation materials in Beijing Building Engineering Materials Guide clearly pointed out that high-efficiency thermal insulation materials such as flame-retardant polystyrene foam plastic board, rigid polyurethane, rock wool glass wool and hydrophobic perlite water glass products were promoted materials, while thermal insulation materials mixed with polystyrene particles and cementing materials were listed as restricted materials because their thermal insulation performance could not meet the design standards of energy-saving residential buildings. "Cotton-padded jacket" should also wear fashion. With the popularization of energy-saving technology, new energy-saving materials are constantly emerging. Self-adjusting phase change energy storage technology has become a fashionable technology in the field of thermal insulation. Phase change energy-saving material is a new material developed in recent years. So, what is the phase change energy storage? Zhang cited an example. During the first Gulf War, due to the high temperature and sunshine in the Gulf region, the surface temperature of the ship deck reached above 60℃, and the continuous high temperature caused great consumption to the American soldiers participating in the war. Jackets containing phase change materials solve the problem of cooling deck soldiers. Wearing this jacket can maintain the comfort of 1-2 hours even at the high temperature of 40℃. In fact, phase change energy storage materials use some substances to absorb or release energy through phase change at a specific temperature. Self-regulating phase-change energy-saving wall insulation material is a composite of excellent traditional insulation materials and phase-change materials through a new process, which has the functions of potential storage, temperature regulation and temperature control. When the ambient temperature is lower than18 C, the phase change substance in the material condenses from liquid to solid, forming an exothermic state, thus reducing the heat energy cost of heating equipment. When the ambient temperature is higher than 26℃, the phase change substance melts from solid to liquid, forming an endothermic state and reducing the refrigeration load. In this way, whether in hot summer or cold winter, the use of this thermal insulation material not only achieves the purpose of energy saving, but also greatly improves the indoor thermal stability and comfort. At present, there are many new thermal insulation technologies at home and abroad, and the popularization and application is still an important factor affecting our real living in energy-saving houses. Tao, general manager of Beijing Qintian Technology Development Co., Ltd., who owns FTC self-regulating phase change energy-saving technology patent, told reporters that the use of energy-saving materials mainly depends on cost performance, not just price. Take phase change thermal insulation materials as an example. The test of Beijing Construction Engineering Quality Testing Center shows that the FTC phase change energy-saving material with a thickness of 38 mm is obviously superior to the extruded polystyrene board with a thickness of 50 mm, which shows that the FTC phase change energy-saving material can reach the energy-saving standard of 65% with a very thin thickness, while other materials need 80- 100 mm to reach the energy-saving standard. At the same time, using phase change energy storage mechanism to store heat and reuse it when the temperature changes is also a kind of energy saving. In addition, it also has certain sound insulation function when used in ceiling, partition wall and other parts. Energy-efficient housing brings you benefits. Today, we are more and more concerned about whether refrigerators, air conditioners and even light bulbs save energy. Should we pay more attention to energy-efficient housing? According to statistics, in Europe, the price of high-comfort and low-energy residential buildings is about 3% higher than that of ordinary residential buildings, but the annual operating expenses can be saved by 60%. Comparing the two, buying energy-saving houses is the most cost-effective, so it has become the first choice for European buyers. It can be seen that the increased cost of energy saving when you buy a house can be fully recovered in a short time in the process of energy saving in the future. When buying a house, please pay attention to "energy consumption" in addition to location, apartment type and price. Your small step can not only save money and resources for yourself, but also push the energy-saving residence forward.