METHOD OF MANUFACTURING POROUS BASE SCAFFOLD OF COMPOSITE MATERIAL Russian patent published in 2017 - IPC B29C70/34 B29C67/20 B32B5/18 D04H1/488 C09K21/00 C04B35/524 

FIELD: technological processes.

SUBSTANCE: for the manufacture of a porous base scaffold, a staple polymeric material with a high coke residue in the form of nonwoven webs is subjected to needle piercing for the purpose of separating it. The binder is applied to the separated webs, and then they are pressed at a temperature of 120-200°C and a pressure of 3-5 MPa for 10-12 hours and cooled prior to carbonization down to room temperature. The carbonization is carried out by firing at a temperature of 1000°C for 1-2 h with simultaneous pressing at a pressure of 0.1-0.15 MPa. A binder is used that melts at a pressing temperature, solidifies at room temperature and completely decomposes when carbonized.

EFFECT: improved quality of the base scaffold of a composite material by giving it a surface roughness which is not higher than the metal one.

2 cl, 2 dwg