Preparing method capable of weaving continuous fiber enhanced thermoplasticity prepreg tape and product

The technology of continuous fiber and prepreg tape is applied in the field of preparation of woven continuous fiber thermoplastic prepreg tape. The effect of increasing frictional resistance

Inactive Publication Date: 2019-09-27
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

U.S. Patent US20170051438A1 introduces a method of low-pressure impregnation to obtain a flexible prepreg tape. The product quality is reliable and can be widely used in weaving, winding, molding and other processes, but the air inside the prepreg tape prepared by this method is difficult to discharge , in the subsequent processing, it is easy to form holes inside the product

Method used

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  • Preparing method capable of weaving continuous fiber enhanced thermoplasticity prepreg tape and product
  • Preparing method capable of weaving continuous fiber enhanced thermoplasticity prepreg tape and product
  • Preparing method capable of weaving continuous fiber enhanced thermoplasticity prepreg tape and product

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specific Embodiment approach

[0029] The accompanying drawings further describe the present invention in detail, so that those skilled in the art can implement it with reference to the description. It should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0030] In the description of the present invention, it should be noted that the terms "feeding conduit", "hollow splitter", and "discharge die" are only for the convenience of describing the present invention and simplifying the description, for those of ordinary skill in the art That is to say, on the premise of not departing from the principle of the present invention, some improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection sc...

Embodiment 1

[0035] A preparation method and product of a weavable continuous fiber thermoplastic prepreg tape, such as figure 1 As shown, the rewinding frame 1, the yarn dividing frame 2, the screw extruder 4, the meshing roller 6, the heating sleeve 8, the drafting roller 13, the meshing roller 6, the traction machine 11, and the winding machine 12 are arranged in order . The 612tex continuous glass fiber is led out from the bobbin frame 1, passes through the splitting pins on the splitter frame 2, and passes through the feeding conduit of the head 5 of the screw extruder. The feeding conduit is the channel of the fiber and is located In the center, the end of the conduit is connected to the discharge die.

[0036] Put the LDPE pellets into an 80°C constant temperature oven, dry for 4 hours, put them into the screw extruder 4 barrels, set the temperature of each section to 170°C, 180°C, 190°C, 185°C, 180°C, and set the extrusion frequency 1.5Hz, the frequency of tractor 11 is set to 8H...

Embodiment 2

[0038]A preparation method and product of a weavable continuous fiber thermoplastic prepreg tape, such as figure 1 As shown, the rewinding frame 1, the yarn dividing frame 2, the screw extruder 4, the heating sleeve 8, the meshing roller 6, the tractor 11, and the winding machine 12 are arranged in sequence. The PP / glass fiber mixed yarn with a mass ratio of 880tex of 50 / 50 is drawn from the rewinding frame 1, passes through the splitting pin on the splitting frame 2, and passes through the feeding conduit of the head 5 of the screw extruder, and the feeding conduit is The fiber channel is located in the center of the hollow splitter, and the end of the conduit is connected to the discharge die. The hollow splitter is filled with heat-insulating fillers to prevent the PP / glass fiber mixed yarn from melting prematurely and blocking the feeding conduit, which hinders drafting.

[0039] Put the PP pellets in an 80°C constant temperature oven, dry for 4 hours, and put them into th...

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Abstract

The invention discloses a preparing method capable of weaving continuous fiber thermoplasticity prepreg tape and a product, and belongs to the technical field of resin-based composite materials. A dipping front area and a dipping rear area are included. The dipping front area is provided with a yarn reversing frame, a yarn dividing frame and a screw extruder machine head part. The dipping rear area is provided with a drawing roller, a meshing drum, a heating casing pipe, a temperature control box, a tractor and a winding machine. According to the purpose, a secondary fusion dipping method is adopted, a fiber bundle is scattered and spread in the dipping front area, inner-layer fiber is incompletely dipped, the surface of fiber is coated with a layer of resin, and under the action of the traction roller and the meshing drum, secondary dipping is achieved, gas in the fiber is extruded out, the resin and the fiber are further scattered, and the soft and woven prepreg tape with the rough surface is manufactured.

Description

technical field [0001] The invention belongs to the technical field of resin-based composite materials, and relates to a preparation method and a product of a weavable continuous fiber thermoplastic prepreg tape. Background technique [0002] Compared with continuous fiber-reinforced thermosetting prepreg tape, continuous fiber-reinforced thermoplastic prepreg tape has more excellent properties, such as high tensile strength, bending strength, impact resistance, etc.; and also has light weight, easy storage, It is widely used in composite material processing techniques such as pultrusion, winding, and molding due to its recyclability and other characteristics. However, with the development of high-tech fields such as aerospace and national defense, higher requirements are put forward for continuous fiber reinforced thermoplastic composites in terms of structural complexity and performance uniformity. [0003] Three-dimensional weaving technology is currently a reinforcement...

Claims

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Application Information

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IPC IPC(8): B29C70/52
CPCB29C70/52B29C70/523B29C70/525B29C70/528
Inventor 吴宁杨宏宇李帅陈利
Owner TIANJIN POLYTECHNIC UNIV
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