采用实验所得的最佳全水发泡工艺,制备了ODP值为零的硬质聚氨酯泡沫塑料(RPUF),其压缩强度满足GB10800-89《建筑物隔热用硬质聚氨酯泡沫材料》的要求.在此工艺下,以季戊四醇螺环磷酸(SP-DPA)为阻燃剂制备了无卤阻燃RPUF,讨论了SPD-PA含量对RPUF性能的影响.SEM和耐水溶性测试表明SPDPA与RPUF基体有良好的相容性.当SPDPA的添加质量份数为30份时,RPUF的氧指数达到26.0,能达到UL-94 V-0阻燃级别.TGA测试表明阻燃RPUF有良好的成炭能力,SEM证明了燃烧后的RPUF表面能形成非常致密的炭层.SPDPA的加入对RPUF的力学性能影响较小,当SPDPA添加质量份数为30份时,其压缩强度仍能满足GB10800-89的要求.
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