Fiber resin composite and preparation method thereof

A fiber resin and composite technology, applied in the field of fiber resin composites and its preparation, can solve the problems of cumbersome preparation process and high cost of fiber reinforced composite materials, achieve the effect of reducing surface treatment process, reducing preparation cost, and simple preparation process

Inactive Publication Date: 2019-12-20
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a fiber resin composite and a preparation method thereof, which are used to solve the technical problems of cumbersome preparation process and high cost of fiber-reinforced composite materials in the prior art by adopting fiber prepreg and prepreg solidification molding method

Method used

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  • Fiber resin composite and preparation method thereof
  • Fiber resin composite and preparation method thereof

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preparation example Construction

[0019] The embodiment of the present application provides a kind of preparation method of fiber resin composite, such as figure 1 As shown, the methods include:

[0020] Step 101, using a fiber spreading device to thin the fibers to obtain a thin layer of fibers;

[0021] In the embodiment of the present application, in the process of preparing the fiber-resin composite, in order to obtain a composite material with better performance, it is necessary to increase the contact area between the fiber and the resin material as much as possible. The fiber spreading device is used to thin the fiber, which can increase the surface area of ​​the fiber, thereby increasing the contact area between the fiber and the resin material.

[0022] Step 102, put the resin matrix masterbatch into the extruder, melt or react in the extruder and then extrude to obtain the molten resin matrix.

[0023] In the embodiment of the present application, an extruder is used to melt or react the resin matr...

Embodiment 1

[0043]The carbon fiber is thinned to about 30 μm, and the polyamide resin is melted and extruded in the extruder at 350 °C, the receiving distance is controlled to be 10 cm, the flow rate of the polyamide resin matrix is ​​3 mL / min, and the hot air pressure is 0.3 MPa. The air temperature is 380°C, and the flow rate of the resin matrix is ​​900g / 10min. Under the above conditions, the extruded polyamide resin matrix is ​​sprayed on the surface of the thin layer of carbon fibers to obtain a carbon fiber polyamide composite.

Embodiment 2

[0045] Thin the aramid fiber to about 30 μm, melt and extrude the polyamide resin in the extruder at 350°C, control the receiving distance to 10cm, the flow rate of the polyamide resin matrix to 3mL / min, and the hot air pressure to 0.3MPa , the temperature of the hot air is 380°C, and the flow rate of the resin matrix is ​​900g / 10min. Under the above conditions, the extruded polyamide resin matrix is ​​sprayed on the surface of the thin layer of aramid fiber to obtain the aramid fiber polyamide composite.

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Abstract

The invention relates to a fiber resin composite and a preparation method thereof. The preparation method of the fiber resin composite includes: using a fiber spreading device for spreading fibers soas to reduce the thickness of the fibers and obtain thin layer fibers; placing resin matrix master batches in an extruder, extruding the resin matrix master batches after enabling the resin matrix master batches to melt or react in the extruder, and obtaining a resin matrix in a molten shape; and spraying the extruded resin matrix in the molten shape onto the thin layer fibers, and obtaining the fiber resin composite after postprocessing. The fiber resin composite and the preparation method thereof use gas for assisting resin in infiltrating the fibers, solve the problem that the resin difficultly infiltrates the fibers in a traditional preparation method, and reduce preparation cost of the composite.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a fiber resin composite and a preparation method thereof. Background technique [0002] Due to a series of excellent properties such as light weight, high specific stiffness and specific strength, good high and low temperature performance, and good chemical stability, fiber-reinforced composite materials have great potential in many fields such as aerospace, weaponry, rail transportation, and energy. Broad application prospects. At present, the preparation of fiber-reinforced composite materials is mainly divided into two aspects: the preparation of fiber prepregs and the curing and molding of prepregs. Therefore, the performance of fiber prepregs directly determines the performance of fiber-reinforced composite materials. The preparation process of fiber prepreg is mainly divided into the following two steps. First, the surface of the fiber is treated, and then a la...

Claims

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Application Information

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IPC IPC(8): B29B15/14
CPCB29B15/127B29B15/14
Inventor 朱才镇徐中国刘会超陈红辉杨敬龙杨光徐坚
Owner SHENZHEN UNIV
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