METHOD FOR PRODUCING POLYMER OPEN-POROUS MATERIAL Russian patent published in 2016 - IPC C08J9/26 C08J9/42 B29C67/20 B29C33/52 B29C33/54 

FIELD: manufacturing technology.

SUBSTANCE: parts from poromeric material can be used as functional elements, for example filtration elements of filtration devices, matrix-carriers of catalysts, heat insulation. Part from poromeric material can be used as a part of structures supporting power load. While producing heat-resistant polymers, the part from poromeric material can be used at high temperature, since they have high mechanical and thermal characteristics. Proposed method comprises formation of a porous matrix with a pore system of the specified shape and size, formation of the second matrix by filling pores of the first matrix, removal of the first matrix, formation of polymer phase in pores of the second matrix formed after removal of the first matrix, strengthening the polymer phase, removal of the second matrix. After removal of the second matrix protective coating of poly-para-xylylene can be applied on the reinforced polymer phase. Formation of the first matrix is possible by using equipment, called a 3D printer. In this equipment implements the method, also called a 3D printing method. Layer-by-layer building-up method enables forming a matrix with porosity morphology of virtually any desired type. Method can be used for thermoplastic and thermosetting plastics. Declared method enables making polymer open-porous material having the following characteristics of the porous structure: porosity of 25-67 %; pore size of about 0.5 mm; density (apparent) of 0.30-0.90 g/cm³. Porous composite material with matrix can be made of a thermally stable polyimide (temperature index of 250-300 °C) and coating of poly-para-xylylene providing low water absorption of the material.

EFFECT: invention relates to producing articles from polymer open-porous material (poromeric material).

3 cl, 2 dwg, 2 ex