Composite fireproof glass good in heat isolation performance

The invention discloses composite fireproof glass good in heat isolation performance. The glass comprises first float glass, second float glass and a third flame-retardant layer filled between the first float glass and the second float glass. The third flame-retardant layer is obtained through curing by means of flame-retardant glue. The flame-retardant glue is prepared from, by weight, 50-55 parts of N-hydroxymethyl acrylamide, 45-50 parts of N-(1,1-dimethyl-3-oxobutyl)acrylamide, 62-65 parts of potassium alum, 83-86 parts of magnesium chloride, 35-38 parts of potassium chloride, 3-6 parts of aminopropyltriethoxysilane, 2-5 parts of methyl triethoxysilane, 1-3 parts of organic phosphorus flame-retardant agent, 2-3 parts of sodium hydroxide aqueous solution, 1-2 parts of ammonium persulfate, 1-2 parts of ferrous sulfate, 5-8 parts of anhydrous ethanol and 500-510 parts of water. The glass has excellent fireproof performance, heat resistance and heat isolation performance, greatly prolongs fire-resistant time,