Application of vacuum insulation panels

With the rapid development of modern society, due to excessive energy consumption and increasing environmental pressure, energy and environmental protection problems have become increasingly serious, and energy conservation and consumption reduction have become imperative. As a new type of energy-saving material, vacuum insulation panels have been widely researched and applied in recent years. Vacuum insulation technology has always been a direction of research and development. After more than a century of development, people’s in-depth research on heat transfer mechanism has reached the molecular level. The vacuum insulation panel uses the principle of vacuum insulation to eliminate the convection effect. It combines the two methods of vacuum insulation and air insulation, which ideally achieves the insulation effect and purpose of energy saving and heat preservation. It is a new and efficient insulation material.

The vacuum insulation panel is composed of core material, barrier film, desiccant or getter, etc. Due to the combination of two methods of vacuum insulation and microporous insulation, it ideally achieves the insulation effect and purpose of heat preservation and energy saving. Generally speaking, the thermal conductivity of vacuum insulation panels can reach (0.003-0.004)W/(mK), and under the same thickness, it has 10 times the excellent thermal insulation performance of traditional materials. As a new type of high-efficiency and energy-saving thermal insulation material, it is currently mainly used in refrigerator freezers, cold chain logistics, medical and scientific research low-temperature facilities, vending machines, thermal insulation water heaters and other industries with thermal insulation requirements. It can also be used for building envelopes or thermal equipment, materials or material composites that resist heat flow transfer.

Compared with traditional building insulation materials, vacuum insulation panels do have the unparalleled thermal insulation effect of other materials. Since 2006, foreign countries have gradually developed vacuum insulation panels for use in the construction field. Since 2009, China has also begun to use this high-efficiency insulation material in the construction field. However, due to the characteristics of the vacuum insulation panel itself, there are some problems in the application of the building. Leading, the prerequisite for the application of vacuum insulation panels is to ensure that the vacuum degree is not damaged, but when used as building thermal insulation materials, the mechanical properties of vacuum insulation panels are poor, and the surface is easily damaged. The second is its service life. At present, the service life of vacuum insulation panels is mostly carried out in the laboratory. The service life of the specific application in buildings has not been verified in practice, and the service life of most vacuum insulation panels is shorter than that of buildings. life. In addition, compared with traditional building insulation materials, vacuum insulation panels cannot be arbitrarily cut or cut in specific building applications, otherwise the vacuum degree will be destroyed, and it needs to be pre-ordered according to on-site construction requirements. At present, the cost of vacuum insulation panels is relatively high, and the material cost and production cost are higher than ordinary insulation materials, which limits its large-scale use in the construction field.

At present, European vacuum insulation panels have been used on a large scale in buildings, and have shown excellent performance, good thermal insulation effect and space saving. With the development of technology, vacuum insulation panels will have broader application prospects in the field of building insulation if they can maximize strengths and avoid weaknesses under the premise of ensuring good thermal insulation performance to achieve both performance and function. We believe that with the gradual recovery of the global economy and the need for energy conservation and environmental protection in the next few years, the market demand for vacuum insulation panels will increase.