METHOD OF PRODUCING COMPOSITE MATERIALS FROM LIGNOCELLULOSE RAW MATERIAL Russian patent published in 2009 - IPC B27N3/04 

FIELD: process engineering.

SUBSTANCE: invention relates to production of composited materials from lignocellulose raw and can be used in construction and furniture production. Proposed method comprises grinding raw material, drying, processing by steam at higher temperature and pressure during time interval sufficient for decomposition of hemicelluloses followed by elevated-temperature compaction. The latter allows thermal hardening of hemicelluloses decomposition products to produce polymer matter that makes a binder for lignocellulose material. Grinding lignocellulose raw material, represented by wheat straw or aspen wood, is performed to 0.2 mm-size, steam processing is carried out at 170 to 190°C. Note here that, prior to elevated-temperature compaction, 5 to 30% by weight of total dry weight of filler are added selected from the group of electrically conducting or coloring material, e.g. natural graphite, aluminium powder.

EFFECT: simplified method of producing composite materials, improved properies.

2 cl, 1 tbl, 12 ex