规定了在规定的荷载、温度和时间条件下测定硬质泡沫塑料压缩蠕变的方法。将长方体形式的试样放置在两个平板之间，a）在标准条件下，b）在商定的温度和时间条件下施加规定的载荷。应计算标准大气条件和高温条件下加载试样的压缩变形差异。

Specifies a method for the determination of compressive creep of rigid cellular plastics under specified conditions of load, temperature and time. Test specimes in form or rectangular parallelepipeds are placed between two flat plates and the specified load is applied a) at standard conditions and b) at agreed conditions of temperture and time. The difference in compressive deformation of the loaded specimen at standard atmospheric conditions and at elevated temperature shall be calculated.