在大量实验的基础上给出了聚氨酯硬泡沫塑料低温线胀的变化范围和平均值。
Based on a lot of experiments, the change range and average value of the linear expansion of polyurethane at low temperature have been given.
以PUR 发泡硬泡沫塑料为例，将此方法的计算结果与试验数据进行了比较。
The method has been used on the PUR rigid foam as an example and the result is satisfied comparing with the data of the experiment.
讨论了聚氨酯硬泡沫塑料低温比热与密度、温度以及空气中存放时间等参数的关系。
The relationships between specific heat of PU rigid foam at low. temperature and such parameters as those of temperature, density and ageing time, etc., have been discussed.
找出了发泡剂为氟里昂- 11的聚醚基浇注型聚氨酯硬泡沫塑料上述弹性性质的经验公式。
The experience formulas for the above-mentioned elastic properties of a moulded PUR foam of polyether base blown by F-11 are presented here.
测定了低温下聚氨酯硬泡沫塑料拉伸、剪切和压缩弹性模量与泡沫密度、方向以及温度的关系。
Measurements have been made to determine the relation of the tension, the compression and the shearing of PUR foam at low temperature with its density, direction and temperature.
另一类是以热塑性聚苯乙烯泡沫塑料和热固性聚氨酯硬泡为主的有机保温材料，通常认定为可燃性材料。
Another kind is thermoplastic polystyrene foamed plastic thermosetting and rigid polyurethane foams primarily organic heat preservation material, usually identified as combustible materials.
介绍了冰箱用硬质聚氨酸泡沫塑料(简称硬泡)的制备工艺，设计了冰箱用硬泡生产过程中的质量控制流程。
The preparation of rigid PU foam for refrigerator is studied. The production quality control flow scheme of rigid PU foam for refrigerator is designed.
介绍了冰箱用硬质聚氨酸泡沫塑料(简称硬泡)的制备工艺，设计了冰箱用硬泡生产过程中的质量控制流程。
The preparation of rigid PU foam for refrigerator is studied. The production quality control flow scheme of rigid PU foam for refrigerator is designed.
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