SU1708967A1 - Method of producing fibrous filter material - Google Patents

Abstract

The invention relates to methods for producing filter materials used for analyzing atmospheric air and gases. The aim of the invention is to improve the uniformity of the structure of the material. A method is proposed for producing a fibrous filter material by drawing fibers from a polymer solution through capillaries with an external electric field, followed by laying these fibers on a collecting electrode. As the precipitation electrode using a graphite grid. In this case, the fibers are pulled out in the air flow directed perpendicular to the precipitation electrode in the direction of the spinning of the fibers. 1 il. The invention relates to methods for producing filter materials used for the analysis of atmospheric air and gases. A known method for producing a nonwoven material according to which a fiber is formed from a polymer solution. The solution is fed through a thin capillary under high potential to a constant electric field. The solvent evaporates, the fine fiber settles on a grounded anti-electrode. However, using this method in a known process did not provide a uniform material structure. The purpose of the invention is to improve the uniformity of the material structure. The goal is achieved by obtaining a fiber filter material extraction of fibers from a polymer solution through capillaries by an external electric field, followed by laying them onto a precipitation electrode, the fibers are drawn in the flow The graphite grid is used as a precipitation electrode. The air flow is directed perpendicular to the graphite grid in the direction of the spinning of the fibers. The drawing shows a scheme for producing a fibrous material. The diagram shows polymer solution 1, capillary 2, drop 3 solution, thread 4 , electrode 5 in the form of a graphite grid, grounding 6, air intake 7, pump B, high voltage source 9. Example: by applying a pressure of 1.1 atm to a container with a polymer solution. on. voltage 35 kV. Visually observe the start of fiber spinning. At the same time, at the beginning of the spinning of the fibers, an air stream is supplied. Immediately after air supply, the pump will be turned on to pump out excess air. The operating time of one layer ma-feVIO 00 h) oVJ

Description

The invention relates to methods for producing, filter materials used

2

for analysis of air and gases. The aim of the invention is to improve the uniformity of the structure of the material. A method is proposed for producing a fibrous filter material by pulling fibers from a polymer solution through capillaries with an external electric field, followed by laying these fibers on a collecting electrode. As the precipitation electrode using a graphite grid. The extrusion of the fibers when this is carried out in the air flow directed perpendicular to the precipitation electrode in the direction of spinning fibers. 1 il.

The invention relates to methods for producing filter materials used for the analysis of atmospheric air and gases.

A known method of manufacturing a nonwoven material, in which the fiber is molded from a polymer solution. The solution through a thin capillary under high potential, is fed into a constant electric field. The solvent evaporates, the fine fiber settles on the grounded counter electrode.

However, the use of this method in a known process did not provide a uniform structure of the material.

The aim of the invention is to improve the uniformity of the structure of the material.

This goal is achieved by the fact that upon receipt of a fibrous filter material by pulling the fibers from the polymer solution through the capillaries with an external electric field, followed by laying them on the collecting electrode, the fibers are pulled out in an air stream. As the precipitation electrode using a graphite grid. The air flow is directed perpendicular to the graphite mesh in the direction of spinning fibers.

"The drawing shows a scheme for obtaining a fibrous material.

Claims (6)

The diagram shows a solution of 1 polymer capillary 2, a drop 3 solutions, thread 4, electrode 5 in the form of a graphite grid, grounding 6. air intake 7, pump 8, high voltage source 9. Example. By applying a pressure of 1.1 atm to a container with a polymer solution, a voltage of 35 kV is included. Visually observe the beginning of the formation of fibers. At the same time with the beginning of the formation of fibers provide air flow. Immediately after the air supply, the pump will be turned on to pump out excess air. The operating time of one layer ma51) ,,,, 1708967 A1