In order to ensure the safety of the inorganic isolation partitioned polystyrene insulation board in applying, this paper studied its heat retention,flame retardancy, water absorption, fatigue performance, and microscopic analysis.The test results showed that the apparent density of the board is about 120kg/m3 would meet the demands of great flame retardancy and good thermal insulation; the volume water absorption rate is curve growing in the early stage, it drops slightly and keeping stable after reach the maximum, the maximum is less than 8%; after 1500 times 12.1KN/m2 impact on the board, the internal inorganic material is destroyed basically and remain unchanged in the substrate level; x-ray diffraction analysis result showed that there were Mg(OH)2 and hydrated magnesium sulfate in the solidified inorganic material.

In order to further optimize the properties of polystyrene permeable flame retardant composite insulation board, the composition, properties and flame retardant mechanism of graphite polystyrene permeable flame retardant composite insulation board were discussed in this paper. The properties of graphite polystyrene substrate and permeable flame retardant, the optimum ratio of permeable flame retardant. The tensile strength, compressive strength, thermal conductivity and softening coefficient perpendicular to the plate surface are discussed, and the endothermic flame retardant mechanism of osmotic flame retardant was discussed. The results show that graphite polystyrene permeable flame retardant composite insulation plate does not reduce its combustion and mechanical properties when reduces the density and thermal conductivity.

In order to explore the safety performance of the wall panel with insulation decoration structure in the actual application, some test were made. The test results of this paper show that: The rock wool with a density of 120 kg/m3 and the polyurethane with a bonding density of 50 kg/m3 are selected as the core material for the temperature retention, whose average tensile strength can reach 139.33 KPa; The mean value of single point anchoring force of 12 mm thick ceramic plate and back bolt as decorative surface is 2088.29 N, and the mean value of the structural adhesive strength between the ceramic plate and keel is 3092.07 KPa; When the uniformly distributed load on the wallboard reaches 6.53 KPa, its deflection reaches 1/180 of itself.