| 摘要 |
A method of producing ultrafiltration modules for distributing and concentrating liquid mixtures, involving subjecting a casing, together with a bundle of capillary fibres placed in it, to the action of centrifugal force, while simultaneously introducing sealing compound into the casing, characterized in that a bundle of wet capillary fibres which are plasticised, preferably using a aqueous solution of glycerine at a concentration of 5-70 percent, is introduced into the pipe constituting the casing so that the fibres protrude out of both ends of the casing, and further the casing and the bundle of fibres inside it are subjected to rotation about a vertical axis perpendicular to the lengthwise axis of the casing, the centrifugal action causing the removal of an excess of plasticizing solution, making the humidity of the fibres less than 90 percent, after which rotation is stopped and both outlets of the casing are closed, the fibres being left open, and further an operation is performed whereby the bundle of fibres is flooded by gradually introducing, through holes in the casing situated near its outlets at a uniform distance from them or through holes in the caps closing the outlets of the casing, a sealing compound, for example one based on epoxide or polyurethane or an acrylic compound, at gradually increasing speed of rotation, and when the introduction of the sealing compound is complete rotation continues at a constant speed at a temperature below 50 degrees C until initial cross-linking of the compound occurs, the flooding operation being performed one or more times with successive use of identical sealing compounds, after which the ends of the capillary fibres are trimmed to the edges of the outlets of the casing.
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