FIELD: construction.
SUBSTANCE: manufacturing the first method envisages fabrication of the underlying plasterboard of a compound containing the following components, wt %: plaster bonding agent - 71.4-83.3 and modifying lime water suspension - 16.7-28.6, the latter's composition being as follows, wt %: caustic lime - 0.3-0.6 wt %, sodium polycarboxylate - 3.0-6.0 wt %, potassium polymethylsiliconate - 1.5-3.0 wt %, sodium tripolyphosphate - 0.05-1.0 wt %, water - the rest. Whenever required the uncured plasterboard is covered with a net of flaxen, cotton or synthetic threads and a foam plastic plate or board, the contacting surface of the latter having been pre-treated with the following composition solution wt %: caustic lime - 0.5-1.0, sodium tripolyphosphate - 0.02-0.05, potassium polymethylsiliconate - 20.0-25.0, sodium polysulphomelaminate -20.0-25.0, water - the rest. Whenever required after the underlying plasterboard has been cured the foam plastic board may be covered with net or fabric with another plaster layer applied onto it which composition is identical to that of the underlying layer. After the plaster layer(s) hardening the product undergoes dry-out at a temperature no more than 50°C and the air humidity no more than 5%. The second method envisages application of composite plaster water suspension onto the surface of a mechanically pre-treated foam plastic board. The third method envisages usage of plaster suspension only. There is also a lightweight sandwich-type plasterfoampolymeric composite product described that consists of at least one plaster board (layer) and/or a foam plastic layer made of a plate or a shaped foam plastic blank; whenever required the latter's sides are pre-treated with modifying lime water suspension and covered with a reinforcement net of flaxen, cotton or synthetic threads.
EFFECT: fabrication of a lightweight product, durable, environmentally friendly and characterised by improved thermal and moisture insulation properties.
7 cl, 1 tbl, 26 ex
