Innovation and development of vacuum insulation panels in China: A state-of-the-art review

The urgent world broad demands for carbon neutrality and energy efficiency require improvements in systems' thermal performance. The world's eyes are now on applying high-performance insulation materials, such as vacuum insulation panels (VIPs), which are new and efficient insulation materials with environmental protection advantages. Research on VIPs in China stirred up at the beginning of the 21st century. VIPs have been promoted and applied in China to optimize and improve their performance and production processes. In this paper, the concept, structure, and insulation mechanism of VIPs are introduced. The latest achievements of core materials, barrier layers, and getters are investigated in China. The applications of VIPs in different fields are also summarized. The main current problems are defined, such as optimizing the thermal conductivity and improving the service life. And proposed a solution for the further development of VIP.