The heat insulating layer may be polystyrene particle layer, foamedpolyurethane layer, foamed glass layer, polystyrene board, etc.
保温层可以是胶粉聚苯颗粒保温层、聚氨酯发泡层、泡沫玻璃、聚苯板等。
2
The present invention relates to a kind of hard foamedpolyurethane material prepared with bagasse degrading liquid to replace polyol polymer and through foaming.
本发明涉及一种由甘蔗渣制备的聚氨酯硬质泡沫材料，其采用甘蔗渣降解液完全替代聚合多元醇经发泡而成。
3
So, polystyrene foamed plastic and polyurethane hard foam to the flame retardant function to ensure the whole system how much the fire prevention safety?