新一代真空绝热产品及其发展前景１．真空绝热的优越性热能的有效传输和贮存离不开绝热，绝热可分为用多孔材料如珍珠岩、硅胶、泡沫或纤维材料制成的非真空绝热和真空绝热（图１）。各种绝热方法（在３００Ｋ至７７Ｋ之间）有效热导率λｅｆ与压强Ｐ（Ｎ２）的关系示于图... A new generation of vacuum insulation products and its development prospects 1. The Advantages of Vacuum Insulation Effective heat transfer and storage can not be separated without adiabatic insulation. Insulation can be divided into non-vacuum insulation and vacuum insulation made of porous materials such as perlite, silica gel, foam or fiber materials (Figure 1). Various adiabatic methods (between 300K and 77K) The relationship between the effective thermal conductivity λef and the pressure P (N2) is shown in Fig.