Glue injection box and continuous production line and production method for fiber-reinforced foamed composite materials

Abstract

The invention provides a glue injection box and a continuous production line and production method for fiber-reinforced foamed composite materials. The continuous production line comprises a distribution frame, the glue injection box, a foaming device, a forming die and traction devices, wherein the distribution frame is used for enabling fiber materials to be spatially distributed according to design requirements. The glue injection box comprises infiltration channels, glue injection channels and a discharge channel, wherein the glue injection box is provided with multiple infiltration channels and glue injection channels. The foaming device is arranged to be of a tunnel-type structure, one end of foaming device communicates with the glue injection box, and the other end of the foaming device communicates with the foaming die. An air supply device is arranged on the side, close to the foaming device, of the glue injection box, and a heating device is arranged on the foaming die. The fiber materials pass through the infiltration channels and are infiltrated by liquid matrix materials which are injected into the infiltration channels through the glue injection channels to form composite material precursors, pre-foaming is conducted after the composite material precursors enter the foaming device through the discharge channel, and then the composite material precursors enter theforming die for complete foaming and solidifying or shaping; and different fibers and / or the liquid matrix materials can also be infiltrated in different infiltration channels to form different composite material precursors. Therefore, different parts of the manufactured composite material can be different in material composition, function and property.

Description

technical field [0001] The invention relates to the technical field of pultrusion molding of composite materials, in particular to a continuous production line and a production method of a plastic injection box and a fiber-reinforced foaming composite material. Background technique [0002] Composite material is a material with obvious phase separation characteristics formed by mixing two or more materials. Its shape and performance are different from any one of them. reinforcement material. Usually composite refers to the material in the final form after forming, and the material in the form before the final forming after the matrix material and the reinforcement material is mixed is called the composite material precursor. [0003] Continuous fiber-reinforced foam composites can not only give full play to the strength advantages of fibers, but also reduce the density of composite materials. Building floors and maintenance structures, plank slabs and more. Patent (Applic...

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Problems solved by technology

Patent (Application No.: 200610103934.3) discloses a glass fiber reinforced polyurethane composite sleeper and its manufacturing equipment and manufacturing method, but the method used in this process is to spray the liquid matrix material, that is, polyurethane resin, onto the glass fiber. Infiltrate the glass fiber to form a composite material precursor, and then let the composite material precursor enter the drying tunnel with the mold to solidify into a composite material; this method is similar to the process of continuous plate free foaming, and there are several problems that cannot be solved: 1. Due to only Relying on the composite material precursor to freely foam and fill the mold cavity in the forming mold to realize the distribution of fibers in the composite material, the fibers cannot be positioned according to the designed spatial position, which makes it impossible to design the distribution position of the fibers according to the stress distribution. It is also impossible to manufacture products with complex shapes because of the reinforcing effect of fibers; 2. Since the fibers are soaked by spraying liquid matrix materials onto the fibers, it is difficult to soak the fibers quickly, which will affect the relationship between the matrix material and the fiber material. The interface strength will ultimately affect the performance of the composite material; at the same time, it is difficult to quickly soak a large number of fibers at one time with this method, so it is difficult to manufacture large-sized composite materials; 3. The mold is complex and the investment is large

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