Pultrusion process and pultrusion device of phenolic resin composite

Abstract

The invention discloses a pultrusion process and a pultrusion device of phenolic resin composite. The device is sequentially provided with a yarn releasing device, an impregnating vessel, a felt releasing device, a pre-pultrusion template, a mold, a traction device and a cutting device from front to back, and is characterized in that double driven rollers and a drying device are additionally arranged between the impregnating vessel and the pre-pultrusion device; the pultrusion process which is implemented by using the above devices comprises an impregnating step, a pre-pultrusion template guiding step and a mold solidifying step, wherein a double driven rollers extruding step and a drying step are added between the impregnating step and the pre-pultrusion template guiding step; the impregnated yarn and the felt released by the felt releasing device are extruded in the double driven rollers, the glue solution on the yarn is redistributed, and the felt is impregnated; the yarn and the felt are discharged by the double driven rollers, the discharged yarn and felt are delivered into the drying device for being dried, and finally the dried yarn and felt are delivered into the mould forbeing solidified. The process is simple, the content and the homogeneity of phenolic resin can be effectively controlled, volatile matters can be removed, the performances are improved, and popularization and application of the composite are favored.

Description

technical field [0001] The invention relates to a composite material pultrusion forming process and a forming device thereof, in particular to a phenolic resin composite material pultruding forming process and a forming device thereof. Background technique [0002] The pultrusion molding process is a composite material forming process. The basic process is that fiber reinforced materials (glass fiber roving, glass fiber continuous mat and glass fiber surface mat, etc.) The process of guiding the preformed formwork, curing with heat, obtaining profile products, and cutting them into a certain length according to the requirements of use. [0003] In the pultrusion process, the most widely used resin matrix usually includes epoxy resin, vinyl resin, unsaturated polyester, phenolic resin, etc. Among many resin matrices, phenolic resin has attracted attention due to its unique characteristics of flame retardancy, low smoke, and low toxicity, and is widely used in various public ...

AI Technical Summary

Problems solved by technology

This method controls the resin content of the impregnated fiber reinforced material by improving the dipping device, but the dipping process is more complicated, the non-uniform dipping of the fiber reinforced material and the elimination of small molecule volatile substances when curing with phenolic resin still not resolved

[0005] So far, there have been no successful reports on how to effectively control the content and uniformity of phenolic resin in the pultrusion process, and the effective removal of volatile substances during the reaction process.

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