COMPOSITE HYDROPONIC SUBSTRATE Russian patent published in 2022 - IPC A01G24/00 A01G31/00 

FIELD: crop farming.

SUBSTANCE: invention relates to the field of crop farming, in particular, to hydroponics technology, and can be used to create a material of a hydroponic substrate, and can also be used in the production of binary composites with high water absorption and moisture retention. Composite hydroponic substrate includes a hydrophobic matrix and a hydrophilic filler, constitutes a composite based on polyolefin filled with microcellulose and containing a surface modifier in the form of an organic salt of a variable-valence metal – iron stearate, allowing for an increase in the hydrophilic properties of polyolefin due to the creation of polar groups. Polyethylene or EVA is used as polyolefin. The content of microcellulose in the composite is 40 to 60 vol.%, the content of the surface modifier is 0.5 to 1.5 vol.%. The substrate is produced in the form of strands with an average radius of 0.2 to 1.0 mm.

EFFECT: development of a composition of a polyolefin-based composite hydroponic substrate exhibiting the necessary water-absorbing and moisture-retaining ability, mechanical strength, and possibility of reuse and capacity for recycling or disposal.

1 cl, 9 ex, 1 tbl