Polyurethane foam is an insulating material, which is adopted in various industrial fields owing to its high compressive strength, low thermal conductivity, and excellent impact resistance. The most important additive in the synthesis process of the polyurethane foam is the blowing agent because it significantly affects the cell structure and density. HFC-245fa, the most widely used blowing agent, is expected to be terminated under strict environmental regulations owing to its high global warming potential. This study synthesizes a new eco-friendly polyurethane foam with HCFO-1223zd in the density range of 90 to 190 kg/m³. After the synthesis process, the microstructural morphology of the HCFO-1223zd blown polyurethane foam was observed using scanning electron microscopy. Additionally, the insulation performance was compared to conventional polyurethane foam. Furthermore, mechanical characteristics were investigated at 20 and −163°C temperatures. The results show that the HCFO-1233zd blown polyurethane foam has superior mechanical and thermal properties compared to the conventional blowing agents.

中文翻译：

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环保发泡剂 HCFO-1233zd，用于合成聚氨酯泡沫作为低温绝缘材料

聚氨酯泡沫是一种绝缘材料，由于其抗压强度高、热导率低、抗冲击性能优异，被广泛应用于各个工业领域。聚氨酯泡沫塑料合成过程中最重要的添加剂是发泡剂，因为它显着影响泡孔结构和密度。HFC-245fa 是使用最广泛的发泡剂，由于其高全球变暖潜势，预计将在严格的环境法规下终止。本研究合成了密度范围为 90 至 190 kg/m ^{3 的}具有 HCFO-1223zd 的新型环保聚氨酯泡沫. 合成过程结束后，使用扫描电子显微镜观察 HCFO-1223zd 发泡聚氨酯泡沫的微观结构形态。此外，绝缘性能与传统的聚氨酯泡沫进行了比较。此外，在 20 和 -163°C 温度下研究了机械特性。结果表明，与传统发泡剂相比，HCFO-1233zd 发泡聚氨酯泡沫具有优异的机械和热性能。