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A kind of structural high damping carbon fiber composite material and its preparation method

A composite material and carbon fiber technology, applied in chemical instruments and methods, synthetic resin layered products, transportation and packaging, etc., can solve problems such as limitations and low resin permeability, and achieve excellent toughness, large specific surface area, and improved performance Effect

Active Publication Date: 2020-08-11
SHANGHAI COMPOSITES SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nanopores of carbon nanotube foam make the resin permeability in the thickness direction low, and it is difficult to directly combine the two to prepare high-performance composite materials, so it is limited in practical application.

Method used

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  • A kind of structural high damping carbon fiber composite material and its preparation method
  • A kind of structural high damping carbon fiber composite material and its preparation method

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preparation example Construction

[0030] The embodiment of the present invention also provides a method for preparing the above-mentioned high-damping carbon fiber composite material, including the following steps:

[0031] S1. Prepare carbon fiber reinforced resin layer 1;

[0032] The carbon fiber reinforced resin layer 1 is prepared by impregnating a hot-melt resin film or a resin solution. The carbon fiber is one of polyacrylonitrile-based carbon fiber, pitch-based carbon fiber, and viscose-grade carbon fiber, and the carbon fiber is one of filament and chopped fiber. Resins include one or more mixtures of epoxy resin, double horse resin, phenolic resin, polyimide, polyethylene, polyvinyl alcohol, polyester, polypropylene, polystyrene and polyurethane;

[0033] S2, preparing a carbon nanotube foam layer 2 containing micropores;

[0034] The carbon nanotube foam is processed under the pulsed laser, the laser power is 110W-150W, and the residence time is 0.1ms-0.13ms. The hole diameter in the carbon nanot...

Embodiment 1

[0040]A method for preparing a structural high-damping carbon fiber composite material, comprising the steps of:

[0041] S1. Combine AG80 resin, DDS curing agent and BF 3 Mix MEA uniformly at a mass ratio of 100:30:1 to form a resin system, and then mix the obtained resin system with acetone at a mass ratio of 1:1 to form a resin solution;

[0042] Use a wet laying machine to achieve uniform infiltration of the resin on the T700 carbon fiber, and place it at room temperature for 12 hours to volatilize the acetone to form a unidirectional T700 carbon fiber reinforced AG80 resin layer;

[0043] S2, the selected density is 0.02g / cm 3 1. A carbon nanotube foam with a thickness of 10 μm is placed on a pulsed laser processing platform. Under the conditions of a laser power of 120 W and a residence time of 0.1 ms, a pore diameter of 100 μm and a pore spacing of 100 μm are prepared in the thickness direction of the carbon nanotube foam. Through the holes, a carbon nanotube foam lay...

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Abstract

The invention provides a structural high-damping carbon fiber composite material which comprises a plurality of carbon fiber enhanced resin layer / carbon nanotube foam layer unit structures, wherein each carbon fiber enhanced resin layer / carbon nanotube foam layer unit structure is formed by two carbon fiber enhanced resin layers and a carbon nanotube foam layer clamped between the two carbon fiberenhanced resin layers. According to the structural high-damping carbon fiber composite material disclosed by the invention, commercial carbon nanotube foam is utilized as a damping layer, and the purpose of improving performance of the composite material is achieved by a simple, easy and practical technology; the utilized carbon nanotube foam has the advantages of large specific surface area, excellent toughness and good lubrication with resin, and after the carbon fiber resin layers are arranged into the carbon nanotube foam, interlaminar shear strength can be improved by 20% or more. The carbon fiber composite material disclosed by the invention has the characteristics of high mechanical property and high damping, tensile strength of the composite material can reach 1800MPa or more, interlaminar shear strength is 90MPa or more, and a damping coefficient is 0.1 or more.

Description

technical field [0001] The invention relates to the field of composite materials and their preparation, in particular to a structurally high damping carbon fiber composite material and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, mechanical equipment tends to be high-speed and automatic, and the vibration and noise problems caused by it are becoming more and more prominent. Generally speaking, vibration is harmful to the system itself and the environment. It directly affects the working performance, precision, efficiency, life, safety and stability of the machine or structure, and sometimes even causes system failure. Especially in the aerospace field, taking the launch vehicle as an example, strong vibrations will be generated during its launch and operation stages, and these vibrations will be transmitted to satellite components, which will have a negative impact on the performance of the satellite. At p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/08B32B9/00B32B9/04B32B3/14B32B3/24B32B37/10B32B37/06
CPCB32B3/14B32B3/266B32B5/18B32B9/045B32B27/065B32B27/08B32B37/06B32B37/10B32B2266/04B32B2307/50B32B2307/54B32B2307/558B32B2307/56B32B2307/58B32B2605/00
Inventor 刘千立沈峰王晓蕾鞠博文郝旭峰徐小魁刘荣鹏田杰
Owner SHANGHAI COMPOSITES SCI & TECH CO LTD