| abstract |
The present invention relates to a kind of fire-retardant bulk hard polyurethane foam combined polyether and its application process, belong to combined polyether technical field.Fire-retardant bulk hard polyurethane foam combined polyether of the present invention, is made up of flame retardant polyester polyalcohol A, flame-proof polyol B, PPG C, crosslinking agent, foam stabiliser A, foam stabiliser B, CBA, catalyst, physical blowing agent, fire retardant A, fire retardant B.Fire-retardant bulk hard polyurethane foam combined polyether of the present invention, raw material sources are wide, low cost, and the good flame resistance prepared with it, thermal conductivity factor are low, good leak tightness, capability and performance stabilization；Invention also provides the application process of fire-retardant bulk hard polyurethane foam combined polyether, its process is simple, easy to operate, volatilize low, three wastes, production efficiency are high. |