硬质泡沫塑料 压缩蠕变的测定

[中文适用范围]： 规定了在规定的载荷、温度、相对湿度和时间条件下测定硬质泡沫塑料压缩蠕变的方法。 将形状或长方体的测试样本放置在两个平板之间，并按如下方式施加规定的载荷：标准条件下的程序 A) 和商定的温度和时间条件下的程序 B)。 应计算规定时间后加载样品在标准大气条件和高温下压缩变形的差异。 [外文原描述]： Specifies a method for the determination of compressive creep of rigid cellular plastics under specified conditions of load, temperature, relative humidity and time. Test specimes in form or rectangular parallelepipeds are placed between two flat plates and the specified load is applied as follows: procedure A) at standard conditions and procedure 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 after specified time shall be calculated.