Method for shaping continuous fiber reinforced thermoplastic resin and shaping equipment thereof

Abstract

The invention discloses a molding method and molding equipment of continuous long fiber reinforced thermoplastic resin. The molding device of the present invention includes a melt impregnation mold, and the melt impregnation mold includes an impregnation mold outer body and a thermoplastic resin melt gap flow channel arranged in the impregnation mold outer body, an impregnation independent flow path, a continuous long fiber inlet channel and an impregnation outlet; thermoplastic The resin melt slot channel is set at the upstream end and forms an angle with the continuous long fiber inlet channel, the thermoplastic resin melt slot channel and the continuous long fiber inlet channel are all connected to the impregnation independent flow channel, and the impregnation outlet is located at the downstream end and connected to the impregnation channel. The end of the independent impregnation flow channel is connected; at least one set of freely rotatable tension rollers is also arranged in the independent impregnation flow channel. The molding equipment of the present invention is used to prepare continuous long fiber reinforced thermoplastic resin, which avoids interference and breakage between fiber bundles, ensures continuous and stable production, improves impregnation effect, and obtains long fiber reinforced thermoplastic resin with excellent performance.

Description

technical field [0001] The invention relates to continuous long fiber reinforced thermoplastic resin, in particular to a molding method and molding equipment for continuous long fiber reinforced thermoplastic resin. Background technique [0002] Continuous long fiber reinforced thermoplastic resin is a kind of reinforced thermoplastic resin whose reinforcing fibers are arranged in one direction and whose length is equal to the length of resin pellets. Compared with conventional short fiber reinforced thermoplastic resins, it has more excellent mechanical properties, dynamic fatigue resistance, warpage resistance, etc. Therefore, it is especially suitable to replace cast iron, aluminum and thermosetting plastics in some occasions. [0003] There have been some disclosed impregnation equipment and impregnation methods for preparing continuous long fiber reinforced thermoplastic resins. The common disadvantage of these forming methods is that the continuous fiber bundle canno...

AI Technical Summary

Problems solved by technology

The defect of this molding method is that: the metal rod cannot be rotated, so when the metal rod is in close contact with the fiber bundle, the fiber will be broken and the production will be interrupted; at the same time, it is precisely because the metal rod cannot be rotated that the molten resin cannot Sufficient turbulence is generated so that continuous fibers cannot be properly impregnated; in addition, all fiber bundles pass through a resin pool, and fiber bundles interfere with each other

In this molding method, although the fiber bundles are not in direct contact with the short axis of the opening to avoid the breaking of the fiber bundles, the fiber bundles cannot be well dispersed in parallel, and the resin melt cannot form sufficient turbulence, so the fiber bundles A good infiltration effect cannot be obtained; in addition, since the resin pool does not design independent flow channels for each fiber bundle, it is also impossible to avoid mutual interference between fiber bundles

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