Production equipment and production process of fiber-reinforced thermoplastic resin composite strips

Abstract

The invention discloses production equipment and production process of fiber-reinforced thermoplastic resin composite strips. The production equipment comprises a fiber supply unit, a pretreatment unit, a film coating unit and a pressing unit. The fiber supply unit is used for storing fibers. The pretreatment unit is located in the downstream position of the fiber supply unit and is configured toreceive the fibers from the fiber supply unit. The pretreatment unit comprises an oscillation device. The oscillation device comprises at least one oscillation roller. The oscillation rollers can perform transverse oscillation so that the fibers can be dispersed into monofilaments. The film coating unit is located in the downstream position of the pretreatment unit. The film coating unit is used for covering the upper portion and the lower portion of each fiber with thermoplastic films. The pressing unit is located in the downstream position of the film coating unit. The pressing unit is usedfor pressing the thermoplastic films and the fibers into the fiber-reinforced thermoplastic resin composite strips. According to the production equipment, the composite strips are prepared by using the thin film and fiber hot pressing mode, and the production equipment has the beneficial effects that the fiber dispersibility is good, and the defects such as dry yarn, cracking and paste are not prone to occurring.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a production equipment and production process of a fiber-reinforced thermoplastic resin composite strip. Background technique [0002] At present, fiber-reinforced tapes made of fibers and thermoplastic resins have been widely used in automobiles, pipes, containers, building materials and other fields. The composite strip not only has high strength, but also has the advantages of light weight, recyclability and the like. [0003] However, most of these materials are prepared by the method of impregnating molten resin and fiber. In the current production process of the common melt impregnation method in the industry, since the resin material needs to be completely melted, and in order to ensure the low viscosity state of the resin material, the heating temperature is relatively high, and the fiber impregnation in the composite mold is difficult to control, so the comp...

AI Technical Summary

Problems solved by technology

In the current production process of the common melt impregnation method in the industry, since the resin material needs to be completely melted, and in order to ensure the low viscosity state of the resin material, the heating temperature is relatively high, and the fiber impregnation in the composite mold is difficult to control, so the composite tape is more complex. It is easy to have quality defects such as dry yarn, cracking and paste

[0004] In addition, the melt dipping method also has the defect of poor fiber dispersion

Images