▎ 摘　　要

NOVELTY - Composite flame-retardant insulation board, comprises 60-80 parts mass sodium-based montmorillonite, 1-5 parts mass zeolitic imidazolate framework (ZIF)-67/graphene-based composite filler, 5-10 parts mass silicone flame retardant, 5-10 parts mass nitrogen-phosphorus flame retardant, and 5-15 parts mass binder. USE - The composite flame-retardant insulation board is used in thermal insulation material for building exterior wall (claimed), where the heat of building wall body loss is 20 % of total heat dissipation amount of high energy consumption building. ADVANTAGE - The composite flame-retardant insulating plate has low heat conducting coefficient, light weight, low water absorbing rate, strong permeability resistance, good flame retardant property, and stable pore structure. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing the composite flame-retardant thermal insulation board, which involves (i) preparing composite filler by dissolving dimethylimidazole in a graphene-based aqueous solution, ultrasonically dispersing for 30-60 minutes to obtain an ultrasonic dispersion, where the graphene-based aqueous solution has a concentration of 1 mg/ml, adding cobalt salt to the ultrasonic dispersion, stirring for 30 minutes, and leaving still for 4-12 hours, centrifuging, washing, drying the prepared metal organic framework (MOF)/graphene nanosheets with a freeze dryer, and then ball-milling to obtain a powdery composite material, and (ii) preparing the composite flame retardant insulation board by taking 60-80 parts mass sodium-based montmorillonite, 1-5 parts mass ZIF-67/graphene-based composite filler, 5-10 parts mass silicone flame retardant, 5-10 parts mass nitrogen-phosphorus flame retardant, and 5-15 parts mass binder, stirring and homogenizing the materials to obtain a mixture, placing the mixture in a mold to be molded, leaving still the mixture for its curing, naturally curing at normal temperature of 25degrees Celsius and relative air humidity of 30-50% for 8 hours, demolding, continuously curing for 10 days to obtain a finished product, subsequently cutting and covering, and packaging.