HIGH-FLAME-RETARDANT LOW-TEMPERATURE FOAMING TYPE DOOR AND WINDOW PENETRATING STRIP FOAMING MATERIAL, POLYURETHANE FOAM AND PREPARATION METHOD THEREFOR

摘要

The present application relates to a high-flame-retardant low-temperature foaming type door and window penetrating strip foaming material, comprising combined polyether polyol and isocyanate, the foaming material being characterized in that, by using parts by weight as a reference gauge, the combined polyether polyol comprises the following components in parts by weight: 80-100 parts of polyester polyol, 10-20 parts of polyether polyol, 4-6 parts of a catalyst, 2-3 parts of a foam stabilizer, 30-40 parts of a flame retardant, 20-25 parts of a physical foaming agent and 0.5-1 part of a chemical foaming agent. Also provided in the present application are polyurethane foam for a high-flame-retardant low-temperature foaming type door and window penetrating strip and a preparation method therefor. The foaming material described herein may foam normally at 0°C, and the flame retardant property may reach B1 flame retardant grade.