METHOD FOR OBTAINING HEAT-INSULATING MATERIAL BASED ON WOOD FILLER Russian patent published in 2015 - IPC C04B18/26 C04B40/00 C04B38/10 

FIELD: construction.

SUBSTANCE: method for obtaining a heat-insulating material involves mixing of filler and a binding agent with further shaping and hardening. Industrial wood chips 5±2 mm thick are used as filler, and rigid polyurethane foam consisting of polyol and isocyanate is used as the binding agent. First, components of the binding agent are mixed; then, the binding agent is mixed with the filler by layer-by-layer laying of a binding agent layer, a filler layer and a binding agent layer into a mould at the following component ratio, wt %: polyol 24-22, isocyanate 36-33, industrial chips 40-45. After supply of the components is completed, the mould is fixed with latches and exposed during 15-20 minutes.

EFFECT: reduction of density and thermal conductivity of material.

1 tbl, 1 dwg