Development Of Face Layer Of Decoration & Insulation Integrated Panel System And Application

In order to solve the exist problems in Exterior Insulation and Finish Systems(EIFS):the complex procedure,high cost and high energy consumption in public buildings.This research investigated the preparation of decoration&insulation integrated panel using micro spheres from solid waste-fly ash,Portland cement,acrylic polymer emulsion and other additives.After optimizing the formula and production process of face layer in the integrated panel using DOE in Six Sigma Systems,the face layer’s optimal formulation was consisted of 31.6%of 42.5#Portland cement,4%of Aluminous cement,41.4%of micro sphere,15%of calcium carbonate,1%of calcium formate,0.1%of lithium carbonate,0.1%of anti-foaming agent,0.3%of hydrophobic agent,0.15%of cellulose ether and 11.44%of polymer emulsion.The water-cement ratio was 0.2 and optimal conditions for producing the face layer included:1)holding pressure at 0.45 Mpa for 20 s to prepare the face layer,2)then combining the face layer with extruded polystyrene board under the pressure of 0.14 Mpa for 10s.After 3 days curing,the dry bonding strength of prepared integrated panel was 0.442 MPa,the wet strength and freeze-thaw strength were 0.216 Mpa and 0.193 Mpa,respectively.All these strengthens were two times as high as the requirement in DB11/T697-2009.Meanwhile,the impact resistance was 4.4 J,water absorption was less than 500 g/m2/24hrs,and the fire resistance ability fulfilled A-level.The warping issue was also solved by back layer thickness adjustment.In the long-term property test,the flexible strength and comprehensive strength of 90 days cured integrated panel were 5.45 Mpa and 19.23 Mpa;the bonding strength of the face layer and integrated panel after 80 cycles of heat-rain test and 5 cycles of hot-cold test were all higher than 0.3 Mpa,which is also higher than the required 0.1 Mpa in standard DB11/T697-2009.