This study investigates the effect of liquid-type organofluorine additives (OFAs) on the morphology, thermal conductivity and mechanical properties of rigid polyurethane (PU) and polyisocyanurate (PIR) foams. Foams were characterized in terms of their morphology (density, average cell size, anisotropy ratio, open cell content), thermal conductivity and compressive as well as flexural properties. Based on the results, we observed that OFAs efficiently reduced the average cell size of both PU and PIR foams, leading to improved thermal insulating and mechanical properties.

中文翻译：

---

有机氟添加剂对硬质聚氨酯和聚异氰脲酸酯泡沫的形态，导热性和机械性能的影响

这项研究调查了液体型有机氟添加剂（OFA）对硬质聚氨酯（PU）和聚异氰脲酸酯（PIR）泡沫的形态，导热性和机械性能的影响。根据泡沫的形态（密度，平均泡孔尺寸，各向异性比，开孔含量），导热性，压缩性和挠曲性对泡沫进行了表征。根据结果​​，我们观察到OFA有效地减小了PU和PIR泡沫的平均泡孔尺寸，从而改善了隔热和机械性能。