半硬质聚氨酯泡沫材料属于较新型的泡沫材料,催化剂对合成聚氨酯整皮泡沫材料的质量起到最为关键的作用,采用“络合萃取”法来制备异辛酸镧稀土,实验条件下,反应时间为30 min,温度控制为70℃,氯化镧料液浓度为120 g/L,氯化镧的转化率最高,可达99%以上。在全水发泡半硬质聚氨酯泡沫体系中添加异辛酸镧,结果表明:异辛酸镧的加入能明显改善泡沫的形态,泡孔尺寸更加均匀,具有更好的形态结构。 Semi-rigid polyurethane foam belongs to a relatively new type of foam material, and the catalyst plays a key role in the quality of synthetic polyurethane integral skin foam. The lanthanum isooctanoate is prepared by “complex extraction” method. Under the experimental conditions, The reaction time was 30 min, the temperature was controlled at 70 ℃, the concentration of lanthanum chloride solution was 120 g / L, and the conversion of lanthanum chloride was the highest, reaching over 99%. Lanthanum isooctanoate was added into the whole water foaming semi-rigid polyurethane foam system. The results showed that lanthanum isooctanoate could obviously improve the foam morphology, the cell size was more uniform and had a better morphological structure.