Metal surface polyisocyanurate modified polyurethane sandwich panel and production method thereof
A technology of polyisocyanurate and polyurethane sandwich panels, applied in the direction of metal layered products, chemical instruments and methods, layered products, etc., can solve the problems of easy shrinkage, poor flame retardant effect, low compressive strength, etc. Achieve the effects of enhanced adhesion, low thermal conductivity, and good flame retardancy
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Embodiment 1
[0031] Preparation of combined polyether polyester polyol (white material): Accurately weigh 30g of aromatic hydrocarbon polyester polyol, 30g of sucrose initiator polyether polyol, 10g of sorbitol initiator polyether polyol, toluene di Amine starter polyether polyol 10g, glycerol polyether polyol 20g, triethanolamine crosslinking agent 4g, Demei Shichuang company's foam stabilizer L6820 and AK8805 2.5g, composite catalyst pentamethyldiethylenetriamine, N, N-dimethylcyclohexylamine, tris(dimethylaminopropyl)hexahydrotriazine, potassium oleate, potassium octanoate 1.4g, 141b foaming agent 22g, water 1g, tris(chloroisopropyl)phosphate ( TCPP) flame retardant 10g, fully stirred and mixed evenly to obtain combined polyether polyester polyol (white material).
[0032]The production of metal surface polyisocyanurate modified polyurethane (PIR) sandwich panels: the upper and lower metal panels are pressed by a molding machine, the lower panel is glued by a conventional glue dropping ...
Embodiment 2
[0034] Preparation of combined polyether polyester polyol (white material): Accurately weigh 200~400mgKOH / g aromatic hydrocarbon polyester polyol 30g, 400~500mgKOH / g aromatic hydrocarbon polyester polyol 30g sucrose starter polyether according to the proportion Polyol 20g, sorbitol starter polyether polyol 20g, triethanolamine crosslinking agent 4g, foam stabilizer L6820 and AK8805 2.5g produced by Demei Shichuang Company, composite catalyst pentamethyldiethylenetriamine, N,N- Dimethylcyclohexylamine, tris(dimethylaminopropyl)hexahydrotriazine, potassium oleate, potassium octanoate 1.6g, 141b foaming agent 22g, water 1g, tris(chloroisopropyl)phosphate (TCPP) 10g of flame retardant, fully stirred and mixed evenly to obtain combined polyether polyester polyol (white material).
[0035] Production of polyisocyanurate modified polyurethane (PIR) sandwich panels with metal surfaces: the upper and lower metal panels are pressed by a press, the lower panel is glued by a conventional ...
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