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以环氧丙烷聚醚多元醇、苯酐聚酯多元醇、多苯基甲烷多异氰酸酯PM-200、发泡剂一氟二氯乙烷(HCFC-141b)、泡沫稳定剂硅油AK-8801等为主要原料,采用一步法合成了聚氨酯硬泡,考察了不同种类多元醇及其配比、发泡剂、泡沫稳定剂种类及用量等对聚氨酯硬泡抗压性能的影响。结果表明:高羟值、高官能度的环氧丙烷聚醚多元醇可提高泡沫的压缩强度,且当环氧丙烷聚醚多元醇4110为100份,并加入20份左右苯酐聚酯多元醇580及10份左右聚醚403,泡沫稳定剂用量1～2份,发泡剂水用量0.5～1份,HCFC-141b用量30～35份,催化剂用量0.5～1.5份时,所得聚氨酯硬泡性能较好。
Epoxy propane polyether polyols, phthalic anhydride polyester polyols, polyphenylmethane polyisocyanate PM-200, foaming agent fluorodichloroethane (HCFC-141b), foam stabilizer silicone oil AK-8801 as the main The polyurethane foams were synthesized by one-step method. The effects of different types of polyols and their proportions, foaming agents, foam stabilizers and their dosage on the compressive properties of polyurethane foams were investigated. The results showed that the propylene oxide polyether polyol with high hydroxyl value and high functionality can improve the compressive strength of the foam, and when the propylene oxide polyether polyol 4110 is 100 parts, and about 20 parts of the phthalic anhydride polyester polyol 580 And about 10 parts of polyether 403, 1 to 2 parts of foam stabilizer, 0.5 to 1 part of foaming agent, 30 to 35 parts of HCFC-141b and 0.5 to 1.5 parts of catalyst, it is good.