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A kind of high damping fiber reinforced resin matrix composite material and its preparation method

A fiber reinforced resin and composite material technology, applied in the field of composite materials, can solve the problems of weakening the mechanical bonding effect of the fiber/resin interface, the strength of the composite material not meeting the requirements for use, and hindering the flow of fuel, so as to inhibit crack propagation and improve the mold. Quantity and strength, the effect of improving the interface strength

Active Publication Date: 2021-06-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Long March 5 launch failed in 2017 because a small device on the turbo pump fell off and entered the fuel delivery pipeline, but this small device blocked the flow of fuel and caused the engine to shut down
This method of using damping coating can enhance the damping performance of the composite material to a certain extent, but weakens the mechanical bonding effect of the fiber / resin interface, which is prone to failures such as fiber shedding, making the strength of the composite material unable to meet the use requirements

Method used

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  • A kind of high damping fiber reinforced resin matrix composite material and its preparation method
  • A kind of high damping fiber reinforced resin matrix composite material and its preparation method
  • A kind of high damping fiber reinforced resin matrix composite material and its preparation method

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preparation example Construction

[0032] The preparation method of the above-mentioned high-damping fiber-reinforced resin-based composite material includes the following steps:

[0033] S1 Selectively remove the sizing agent on the fiber according to the requirements and conditions of the interface modification process;

[0034] S2 deposits two-dimensional nanomaterials on the fiber surface, and then grafts one-dimensional nanomaterials on the two-dimensional nanomaterials to form three-dimensional nanostructures;

[0035] S3 blends fibers with a three-dimensional nanostructure on the surface with a resin matrix to obtain a fiber-reinforced resin-based composite material.

[0036] Further, in said S1, the sizing agent on the fiber is removed by soaking in acetone or baking at high temperature;

[0037] Further, in S2, two-dimensional nanomaterials are deposited on the surface of the fiber by electrophoretic deposition, chemical vapor deposition or chemical grafting.

[0038] Further, in S2, the one-dimensio...

specific Embodiment

[0041]1) The fiber surface sizing agent can be selectively removed according to the process requirements

[0042] Choose the acetone immersion method. Soak carbon fiber T300 woven cloth in acetone solution, take it out after 12 hours of treatment, observe the surface of carbon fiber with SEM, if the surface is smooth and free of impurities, it meets the requirements.

[0043] 2) Deposition of two-dimensional nanomaterials on the fiber surface

[0044] Graphene is selected as the two-dimensional material, and electrophoretic deposition is selected as the deposition method. Get graphene oxide and distilled water configuration mass solubility to be the graphene oxide aqueous solution of 0.25g / L, the carbon fiber cloth that step 1) obtains is used as the negative electrode of electrophoresis test, is connected with the negative pole of power supply, and copper sheet is used as anode, connects with the positive pole of power supply Connected, both are immersed in graphene oxide a...

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Abstract

The invention belongs to the field of composite materials, and specifically discloses a high-damping fiber-reinforced resin-based composite material and a preparation method thereof. The fiber-reinforced resin-based composite material includes a resin matrix, fibers and a three-dimensional nanostructure, wherein the three-dimensional nanostructure Located at the intersection interface between the resin matrix and the fiber, the three-dimensional nanostructure includes two-dimensional nanomaterials and one-dimensional nanomaterials; The directions are the same; the one-dimensional nanomaterial is grafted on the two-dimensional nanomaterial, and its direction is perpendicular to the fiber direction. The invention introduces a novel three-dimensional nanostructure at the interface between the fiber and the resin, which can not only improve the mechanical properties of the composite material, but also significantly enhance the damping and shock absorption performance, so that it has very broad application prospects in the fields of aerospace, transportation and the like.

Description

technical field [0001] The invention belongs to the field of composite materials, and more specifically relates to a high-damping fiber-reinforced resin-based composite material and a preparation method thereof. Background technique [0002] Fiber-reinforced resin-based composites refer to new materials prepared through a series of processes with resin as the matrix and fiber as the reinforcement. Compared with traditional metal materials, fiber-reinforced resin-based composites have outstanding advantages such as high specific strength and high specific stiffness, so their applications in aerospace, transportation, construction, sports equipment and other fields have received more and more attention and development. [0003] With the advancement of science and technology, high-end mechanical instruments and equipment are developing towards automation and high speed, and the resulting vibration and noise problems are becoming more and more prominent. Generally speaking, vib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08K13/04C08K9/02C08K3/04C08K3/30C08K7/06C08K7/14B29B15/08
CPCB29B15/08C08K3/30C08K7/06C08K7/14C08K9/02C08K13/04C08K2003/3009C08K3/041C08K3/042C08K3/046C08L101/00
Inventor 周何乐子周华民龚露阳黄志高张云李德群
Owner HUAZHONG UNIV OF SCI & TECH
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