| abstract |
The invention discloses an external wall thermal insulation material and a preparation method thereof. The external wall thermal insulation material is prepared from the following raw materials in parts by weight: 80-90 parts of methylene diphenyl diisocyanate, 65-75 parts of polyether polyol, 20-30 parts of straw fiber, 10-15 parts of glass fiber, 20-25 parts of organic nano-montmorillonite, 30-35 parts of flame retardant, 25-30 parts of smoke suppressor, 1-5 parts of reaction catalyst, 8-15 parts of crosslinking catalyst, 1-5 parts of coupling agent, 15-25 parts of deionized water and 1.5-5 parts of foam stabilizer. The prepared external wall thermal insulation material has the advantages of good fireproof property, high thermal insulation property, high wear resistance, high stability, high physical and mechanical properties, low cost and saving of energy. |