METHOD OF PREPARING OF HEAT-INSULATING MATERIAL Russian patent published in 1995 - IPC

FIELD: heat-insulating materials. SUBSTANCE: enclosing construction is treated preliminary with composition containing epoxy resin, amine hardener and xylene at percent ratio of components (30-40):(4-8):(52-56), respectively. Then frothed mixture containing acetoneformaldehyde resin, 35% sodium hydroxide aqueous solution, surface-active substance ОП-10, fine-dispersed aluminium powder, amine hardener and urea were applied at their percent ratio (85.3-86.7):(8.6-10.8):(0.6-0.8):(0.2-1.0):(1-3):(0.9-1.1), respectively. Properties: volume mass is 30-175 kf/m³, compression strength is 0.05-0.9 MPa, destruction at rupture is occurred by foam plastic. EFFECT: enhanced quality of material, improved method of preparing. 1 tbl