FIELD: structural, facing-decorative and heat-insulating plate materials. SUBSTANCE: composition has, wt.-% water glass (as dry matter) 7.5-9.0; ethylsilicate (as dry matter) 0.5-1.0; technical lignosulfonates (as dry matter) 1.5-2.0; technical magnesium chloride (as dry matter) 1.5-2.0; water 12-15, and wood chip the rest. Properties: bending strength limit is 11.2-15.3 MPa, swelling by thickness for 24 h is 12.3-12.9% specific resistance against wood screw drawing out from the plates is 60-62 Н/mm2, and that from the edge is 54-59 H/mm2. EFFECT: enhanced quality of composition. 2 tbl
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Authors
Dates
1995-09-27—Published
1993-03-25—Filed