Compared with other insulation materials,such as Fiberglass,PE foam,PS foam,PU foam,etc,Closed Cell Elastomeric Thermal Insulation provides most advantages in cell structure,thermal conductivity,flammability,easy-installation and becomes an ideal insulation material for the central air conditioning system.

Based on external wall thermal insulation construction of comprehensive teaching building in Shandong Liaocheng University,properties,advantages and construction methods of extrusion plastic board are introduced in this paper.

Through analyzing the problems in the construction of XPS adiabatic plastic extrusion board,this paper summed up the application and practice of heat preservation technique for outer wall in the engineering construction.

The second generation of foam plastic coated thermal insulation copper pipe has been developed in view of faults of the first generation of ordinary toothed plastic coated copper pipe used in practice.