Abstract
Thermal insulation materials are the most crucial composition in the external wall insulation technology. For the poor fireproofing of organic thermal insulation material, the inorganic/organic composite foamed thermal insulation material is prepared by optimizing inorganic foaming reaction. Inorganic polymer cross-linking system is used as the skeletal structure of foamed composite material and the modified urea-formaldehyde resin with excellent fire resistance is used as toughening material. The analysis results indicate that the composite structure with metal phosphate as skeleton and modified urea-formaldehyde resin as toughened-membrane is formed during the preparation process of the composite foamed material. The property test shows that the thermal conductivity is 0.0389W/m·K, the compressive strength is 180kPa, temperature rise in furnace is less than 20°C and the mass-loss rate is less than 50%. What is more there is no obvious flame appeared in the building materials incombustibility test. Therefore the composite foamed material can be judged to be A-grade incombustible thermal insulation material.
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