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Carbon fiber mixing reinforced magnesium-base high modulus composite material and its preparing process

A composite material and carbon fiber technology, applied in the field of composite material technology preparation, can solve the problems of complex preparation process, difficult large-scale application, and high equipment requirements, and achieve the effects of simple process, low production cost, and simple preparation method.

Inactive Publication Date: 2007-06-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above two methods are that they require a large air pressure difference, high requirements on equipment, complex preparation process, and difficult large-scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The carbon fibers used are produced by Jilin Carbon Plant, with a diameter of 6-8 μm, each bundle of carbon fibers has 1000 monofilaments, and a modulus of 175GPa. The carbon fiber is three-dimensionally woven into a prefabricated part, and the weaving density (the volume of the fiber before weaving to the volume of the prefabricated part after weaving) is 30%. Soak the preform in acetone for 5 minutes to remove the glue, take it out, soak it in deionized water for 10 minutes, wash off the residual acetone, and dry it at low temperature at 100°C for 1 hour; take the hollow microspheres and Mix with water, the mass ratio of hollow microspheres is 20%, and stir evenly to obtain a suspension of hollow microspheres; place the carbon fiber prefabricated part in the suspension of hollow microspheres with a mass ratio of 20%, soak and apply 40kHz ultrasonic vibration 15 minutes, take out and dry at 100°C for 60 minutes.

[0025] Preheat the squeeze casting mold to 250°C and t...

Embodiment 2

[0027] Use carbon fiber with embodiment 1. Carbon fibers are three-dimensionally woven into prefabricated parts with a weaving density of 45%. Soak the preform in acetone for 5 minutes to remove the glue, take it out, soak it in deionized water for 10 minutes, wash off the residual acetone, and dry it at low temperature at 125°C for 1 hour; take the hollow microspheres and Mix with water, the mass ratio of hollow microspheres is 15%, and stir evenly to obtain a suspension of hollow microspheres; place the prefabricated carbon fiber in the suspension of hollow microspheres with a mass ratio of 20%, soak and apply 40kHz ultrasonic vibration After 20 minutes, take it out and dry it at 125°C for 50 minutes.

[0028] Preheat the squeeze casting mold to 350°C and the preform to 500°C. Under the condition of gas protection, after pure magnesium and 8% pure aluminum are completely melted at 740°C, add 0.5% Re in the form of Al-10Re, add 2.5% Si in the form of Al-50Si, stir for 10 mi...

Embodiment 3

[0030] Use carbon fiber with embodiment 1. Carbon fiber is three-dimensionally woven into prefabricated parts with a weaving density of 70%. Soak the preform in acetone for 5 minutes to remove the glue, take it out, soak it in deionized water for 10 minutes, wash off the residual acetone, and dry it at low temperature at 150°C for 1 hour; take the hollow microspheres and Mix with water, the mass ratio of hollow microspheres is 10%, and stir evenly to obtain a suspension of hollow microspheres; place the prefabricated carbon fiber in the suspension of hollow microspheres with a mass ratio of 20%, soak and apply 40kHz ultrasonic vibration 30 minutes, take out and dry at 150°C for 30 minutes.

[0031] Preheat the squeeze casting mold to 400°C and the preform to 650°C. Under the condition of gas protection, after pure magnesium and 10% pure aluminum are completely melted at 760°C, add 1% Re in the form of Al-10Re and 5% Si in the form of Al-50Si, stir for 10 minutes, and the sti...

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PUM

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Abstract

The present invention relates to one kind of carbon fiber mixture reinforced magnesium-base high modulus composite material and its preparation process. The composite material consists of magnesium-base alloy and added reinforcing mixture phase comprising carbon fiber 30-70 wt% and hollow micro bead grain 1-5 wt%. The preparation process includes the first prefabricated body preparation and the subsequent extrusion casting to prepare final composite material. The addition of the hollow micro bead results in the homogeneous dispersion of the carbon fiber, solves the problem of wetting between magnesium and carbon fiber and avoids the cutting of mixture grain to carbon fiber. The composite material has high modulus performance, simple preparation process and low production cost.

Description

technical field [0001] The invention relates to a preparation method in the technical field of composite materials, in particular to a carbon fiber hybrid reinforced magnesium-based high-modulus composite material and a preparation method thereof. Background technique [0002] Metal matrix composites are compounded by two or more materials through a certain method. The purpose is to more effectively exert the respective characteristics of different materials, and to endow the single-use material with excellent composite performance that the material does not have. In recent years, with the development of automobile and aerospace technology, composite materials based on light alloys have shown more and more broad application prospects, but the current research is mostly focused on aluminum matrix composites. The preparation, microstructure, and properties have been thoroughly studied. Compared with aluminum, magnesium has a low density (1.74g / cm 3 ), about 64% of aluminum a...

Claims

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Application Information

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IPC IPC(8): C22C49/04C22C49/14C22C47/00C22C47/02C22C47/12
Inventor 马乃恒赵慧锋夏存娟王浩伟李险峰
Owner SHANGHAI JIAO TONG UNIV
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