Manufacturing method and device for resin in-situ coated fiber precursor and application of manufacturing method and device

Abstract

The invention discloses a manufacturing method and device of resin in-situ coated fiber precursors and application of the resin in-situ coated fiber precursors, and the manufacturing method comprises the following steps: S1, attaching resin to a plurality of fiber monofilament precursors, and compounding to form pre-impregnated precursors; s2, gathering the pre-impregnated protofilaments into a pre-impregnated yarn bundle at a certain temperature and / or under a certain pressure; and S3, winding the pre-impregnated yarn bundle into a pre-impregnated yarn roll. The resin in different forms is attached to the fiber precursor to form the pre-impregnated precursor, the pre-impregnated precursor is gathered into the pre-impregnated yarn bundle, and the pre-impregnated yarn bundle is wound into the pre-impregnated yarn roll, so that the yarn breaking rate of the resin in the prior art is reduced, and the resin infiltration coating speed and the wire drawing speed are well matched; in addition, water spraying cooling and drying processes in fiber production can be omitted, energy is saved, the protofilaments are fully wrapped by resin and protected to the maximum extent, damage to the fibers in the storage and use process is avoided, and the strength and isotropic performance of the fibers are maintained to the maximum extent.

Description

technical field [0001] The invention specifically relates to a manufacturing method, equipment and application of resin in-situ coating fiber precursors. Background technique [0002] Fibers, especially glass fibers and basalt fibers, are drawn into monofilaments by making liquid materials pass through orifice plates at high temperatures and then cooled at high speeds. Usually, they are coated with lubricants, coupling agents, and film-forming agents by oiling sticks. sizing to repair / prevent surface damage to the monofilaments, which are then bundled into yarn, wound into balls and finally, usually, dried into rolls. [0003] Fiber yarn is the primary product of fiber-reinforced composite materials. In order to meet the needs of various composite material processes, fiber yarn is further made into fiber products such as fiber mats, cloth, 3D products, etc., and is also directly and / or passed through Fiber products and thermosetting resins / thermoplastic resins are used to m...

AI Technical Summary

Problems solved by technology

First of all, the drawing speed is very high, reaching 500-3000m / min, and the monofilaments must be bundled into fiber yarns in a very short time and wound on the winding rollers to become yarn rolls. If the resin is not cured, the yarn between the yarn bundles It will be sticky and tangled, and cannot be used unrolled

Moreover, if the viscosity of the resin is high, when the oiling roller rotates, it will produce a transverse traction force perpendicular to the drawing direction of the original silk. This transverse traction not only increases the traction force on the original silk, but also produces a disturbance of the traction force, which is easy to break the yarn.

[0008] Existing coating methods cannot solve the problem of broken wires caused by the disturbance of the traction force of the precursors, such as: the content disclosed in the patent document of publication number CN1880255A "The method of coating the matrix resin on the surface of the new ecological glass fiber Common devices are: roller coater, nozzle coater, open cup coater, pressure cup coater, fluidized bed coater, duck nozzle hot melt pump coater, etc. Wait"

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