External wall energy-saving thermal insulation material for building and thermal insulation board thereof

The invention provides a building exterior wall energy-saving thermal insulation material and a thermal insulation board thereof, and relates to the field of building thermal insulation materials. The exterior wall energy-saving thermal insulation material for the building is prepared from polyurethane, composite silicon hydrochloric acid, microporous silicate, foaming cement, FS cement fly ash, urea resin, diester phthalate and water. The polyurethane, the composite silicon hydrochloric acid, the microporous silicate, the foaming cement, the FS cement fly ash, the urea-formaldehyde resin, the diester phthalate and the water are prepared from the following components in parts by weight: 8 to 10 parts of the polyurethane, 5 to 7 parts of the composite silicon hydrochloric acid, 10 to 15 parts of the microporous silicate, 20 to 30 parts of the foaming cement, 10 to 15 parts of the FS cement fly ash, 7 to 9 parts of the urea-formaldehyde resin, 6 to 8 parts of the diester phthalate and 40 to 50 parts of the wate