The present invention relates to a polyol, polyurethane resin, rigid polyurethane foam, preparation process thereof and a preparation process of a rigid polyurethane foam composite.
The polyol used in the present invention comprises an epoxy resin base polyol, phenol resin base polyol component and aromatic amine base polyol component.
The above polyurethane resin, foam and composite using above polyol as raw material have resistance to dissolution in a hydrochlorofluorocarbon and hydrofluorocarbon which are foaming agents having very low public hazards.
The above-mentioned foam products have excellent physical properties equivalent to those of conventional polyurethane foams obtained by using chlorofluorocarbon as foaming agent, and hence are very useful as a thermal insulation material or a thermal insulation structure for refrigerators, freezers, insulation panels, ships and vehicles.
本发明涉及一种多元醇、聚
氨酯
树脂、硬质聚
氨酯泡沫塑料、其制备工艺和硬质聚
氨酯泡沫塑料复合材料的制备工艺。
本发明中使用的多元醇包括环氧
树脂基多元醇、
酚醛
树脂基多元醇组分和芳香胺基多元醇组分。
以上述多元醇为原料的上述聚
氨酯
树脂、泡沫塑料和复合材料具有抗溶解于
氯氟烃和氢
氟烃的性能,而
氯氟烃和氢
氟烃是对公众危害极低的发泡剂。
上述泡沫塑料产品具有与使用
氯氟烃作为发泡剂获得的传统聚
氨酯泡沫塑料相当的优异物理性能,因此非常适用于冰箱、冰柜、隔热板、船舶和车辆的隔热材料或隔热结构。