| 摘要 |
This compound is used in producing panels, in refrigerating equipment, for insulating boilers, and in the chemical industry. It has a low density (30-50 kg/m<3>) and high physio-mechanical and heat-insulation properties at low content of ecologically-hazardous, halogenated hydrocarbons. The compound of the solid foam polyurethane consists of polyester alcohol, polyetheralcohol, polyisocyanate, fluorine chlorine-containing hydrocarbon, catalyst, superficially active substances, water and target additives. The mass proportion between the polyester alcohol and the polyetheralcohol is 5:1, while the quantity of the fluorine chlorine-containing hydrocarbon and the water is between 1 and 5% weights, determined in proportion to the polyol component.
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