COMPOSITE CONSTRUCTION MATERIAL Russian patent published in 2019 - IPC C04B26/04 C04B14/06 C04B18/26 C04B111/20 

FIELD: construction.

SUBSTANCE: invention relates to the production of composite materials from crushed wood and polymers and can be used in construction industry to produce construction and finishing materials. Composite construction material containing sand, a polymer, a dye, contains softwood sawdust, an ultraviolet stabilizer, polymer filler is represented by a stretch film agglomerate and high pressure polyethylene agglomerate, quartz washing sand with the following ratio of components, wt%: stretch film agglomerate 20–35, high-pressure polyethylene agglomerate 10–20, softwood sawdust 20–35, quartz washing sand 20–35, dye 1–2, UV stabilizer 0.01–0.1, and is obtained by mixing components by heating in extruder from 90 to 215 °C, laying the obtained melt into a mold with subsequent holding under pressure of 100–160 t/m² for 1–4 minutes and cooling in the mold.

EFFECT: obtaining a low-weight composite material with high strength properties and high adhesion with resistance to exposure to UV radiation.

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