This paper discusses the moistureproof and heat insulating properties, the design and calculation,and the shaping method and characteristics of expansible polystyrene. It lays the theoretical foundation for reasonably using materials in building trade.

• 论述了聚苯乙烯材料的防潮保温的性能、设计计算以及成型方法和特点，为建筑业合理使用材料提供了理论依据。