以聚醚多元醇、异氰酸酯、三乙烯二胺、二甲乙醇胺、二月桂酸二丁基锡、1,1-二氯-1-氟代乙烷（HCFC-141B）、水、硬泡硅油、三（2-氯丙基）磷酸酯等为原料,制备了聚氨酯硬质泡沫。实验考察了发泡剂、异氰酸酯、阻燃剂用量对聚氨酯泡沫性能的影响。结果表明,每100 g聚醚中加入1.25 g水、33.54 g HCFC-141B和155.01 g异氰酸酯时,产品的力学性能和尺寸稳定性较好。当阻燃剂用量为22.59 g时,材料的燃烧性能得到改善。实验初步确定了发泡的较优配方,得到了性能较好的聚氨酯硬质泡沫。扫描电镜（SEM）测试表明泡孔呈近似球形、各向同性的闭孔结构,孔径分布较均匀。
Rigid polyurethane foam（RPU） was synthesized using isocyanate,polyether polyols,chain extender,crosslinking agent and accessory ingredients as raw materinals.The related influence factors on the foaming properties were discussed.The experimental results show that the amount of isocyanate,water and 1,1-dichloro-1-fluoroethane（HCFC-141B） plays an important role in the density,structure and mechanical properties of RPU.When water of 1.25 g,HCFC-141B of 33.54 g,isocyanate of 155.01 g and flame-retardant agent of 22.59 g were added into 100 g of premixed polyether polyol,the polyurethane rigid foam exhibited good compressive strength and dimensional stability.Tris（2-dichlorpropyl） phosphate can improve flame resistance of RPU.
参考文献
| [1] | Ho Lim;Sung Hee Kim;Byung Kyu Kim .Effects of the hydroxyl value of polyol in rigid polyurethane foams[J].Polymers for advanced technologies,2008(12):1729-1734. |
| [2] | 高勇 .硬质聚氨酯泡沫塑料泡孔成形及控制研究[D].西南科技大学,2008. |
| [3] | 梁书恩,王建华,田春蓉,周秋明,芦艾.匀泡剂对硬质聚氨酯泡沫孔径及冲击性能的影响[J].塑料助剂,2005(03):25-27,43. |
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