Gumming method of continuous fiber-woven pultrusion tubes

Abstract

The invention relates to the technical field of chemical industry, and specifically relates to a gumming method of fiber-woven resin reinforced tubes, which is characterized by using a vacuumizing principle to soak a running fiber-woven layer in a sealed resin glue cylinder, and carrying out vacuumizing treatment so that the resin quickly penetrates through the fiber-woven layer to achieve a gumming purpose, wherein a vacuum box (1) is formed by a combination of two semicircular cylinders sealed by a sealing glue cushion (11), the fiber-woven layer (7) is sealed by an annular soft rubber rod (6), the resin enters the vacuum box (1) through a material inlet (3), the fiber-woven layer (7) is soaked in the resin, and the resin enters a groove of a mold (8) through the fiber-woven layer (7) to form a plurality of inner glue rings; and closing the material inlet (3) and starting a vacuum device (5), wherein the air entering along with the fiber-woven layer (7) is quickly raised and broken under the function of negative pressure to fast permeate the resin into the fiber-woven layer (7) to finish the operation of impregnating the fiber quickly. Compared with the prior art, the method provided by the invention has the advantages that the gumming process is finished by vacuum negative pressure, and the product is firm in combination, high in strength and high in surface smoothness.

Description

[technical field] [0001] The invention relates to the technical field of chemical industry, and mainly relates to a glue dipping method for braided fibers, in particular to a glue dipping method for fiber braided reinforced resin pipes. [Background technique] [0002] As we all know, during the production of fiber braided reinforced thermosetting resin pipes, it is impossible to pre-impregnate individual fibers, and can only be impregnated after weaving. Because the woven fibers are relatively tight, the conventional impregnation method is difficult to work in a short time. In the existing winding and extrusion process, the fiber impregnation process can allow the fiber monofilament to be pre-impregnated, and then enter the furnace to cure, but the woven fiber tube cannot be pre-impregnated with the monofilament, which requires a kind of impregnation The method can dip the braided fiber in a short time (about 2-3 minutes). So far, no one has a good dipping method for the bra...

AI Technical Summary

Problems solved by technology

[0002] As we all know, during the production of fiber braided reinforced thermosetting resin pipes, it is impossible to pre-impregnate individual fibers, and can only be impregnated after weaving. Because the woven fibers are relatively tight, the conventional impregnation method is difficult to work in a short time. In the existing winding and extrusion process, the fiber impregnation process can allow the fiber monofilament to be pre-impregnated, and then enter the furnace to cure, but the woven fiber tube cannot be pre-impregnated with the monofilament, which requires a kind of impregnation The method can dip the braided fiber in a short time (about 2-3 minutes). So far, no one has a good dipping method for the braided fiber in motion in the world.

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