FIELD: technological processes.
SUBSTANCE: polymeric three-dimensional object of complex shape is made up of layers of height h successively formed from a liquid photopolymer cured point-wise under the influence of light radiation and attached to each other during the formation process. Herewith the size of the curing "point" preferably coincides with the size of the light beam spot initiating the curing of the photopolymerizable composition. In addition, the three-dimensional object has in the entire volume a system of randomly located open bonded pores, each with a maximum transverse linear dimensionρ less than the height of the layer h and the diameter of the "point" d. The method of manufacturing a polymeric three-dimensional object of complex shape with a system of open bonded pores made up of layers obtained by successive curing each layer of a photopolymerizable composition by successive moving a light beam along it initiating its photocuring. As a photopolymerizable composition, a mixture of a photopolymer with a non-polymerizable component (an organic solvent, for example, methanol or 1-butanol or dinonyl phthalic acid or a mixture thereof) is used, with the possibility of heterophasic stratification of the composition during its photocuring and self-formation of the porous polymer structure with the pore size ρ= (Dτ)0.5, where D is the diffusion coefficient of the composition,τ curing time of the "point". Herewith the speed V of moving the light beam is given by the condition: d/τ> V>ρ/τ. After completion of the irradiation, the non-polymerization component is removed from the volume of randomly located openly bonded pores of the formed object of complex shape, preferably washed in an organic solvent, followed by its removal by evaporation.
EFFECT: accelerating the process of manufacturing a three-dimensional polymer object and improving its quality.
4 cl, 2 dwg
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