Composition, hard polyurethane foam material and refrigerating equipment

Abstract

The invention discloses a composition, a hard polyurethane foam material and refrigerating equipment. The composition is prepared from the following components including premixed polyether polyol and isocyanate, wherein the premixed polyether polyol contains polyol, a foaming agent and a catalyst composition, the foaming agent contains trans 1-chloro-3,3,3-trifluoropropene, and the catalyst composition contains 1,2-dimethylimidazole, N,N-dimethyl cyolohexlemine and (2-hydroxypropyl) trimethyl ammonium formate. The composition has stability during long-term storage. In addition, the foam material obtained by adopting the composition has the characteristics of good demoulding, strong adhesion, low thermal conductivity and the like, so that the obtained product is good in energy saving effect.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular, the invention relates to a composition, a rigid polyurethane foam material and refrigeration equipment. Background technique [0002] Rigid polyurethane foam is prepared by reacting polyether polyol or polyester polyol with organic polyisocyanate in the presence of additives such as blowing agent, catalyst and foam stabilizer. Blowing agents, catalysts, foam stabilizers and other additives affect the performance of polyurethane foam, while catalysts strongly affect the foaming process performance and foam performance, such as emulsification reaction speed, gel reaction speed, curing speed, foam fluidity, thermal conductivity and dimensional stability etc. In the foaming process, foam curing speed and foam fluidity are two important indicators of foaming process performance. The speed of foam curing speed and the quality of fluidity directly affect the quality of foam. Fast curin...

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