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A kind of preparation method of cnts/al-li high-strength composite material

A high-strength composite material and composite material technology, applied in the field of composite material preparation, can solve the problems of poor strength and elongation of aluminum-lithium alloy, and achieve the effect of improving the weight reduction effect.

Active Publication Date: 2022-04-26
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of CNTs / Al-Li high-strength composite material, which solves the problems of poor strength and elongation of aluminum-lithium alloys existing in the prior art

Method used

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Embodiment 1

[0034] The invention provides a preparation method of CNTs / Al-Li high-strength composite material, comprising the following steps:

[0035] Step 1. Prepare a homogeneous CNTs solution

[0036]Weigh 60g of 2195 alloy powder, the particle size of the alloy powder is 325 mesh (45 m), weigh 300g of grinding balls, 240g of large balls, and 60g of small balls, that is, the ratio of balls to materials is 5:1, and the ratio of large and small balls is 4:1. Add 60g of isopropanol solution in a clean beaker, weigh 0.3g of the zwitterionic dispersant (dodecyldimethylaminobetaine), join in the isopropanol solution, stir with a magnetic stirrer for 10min, let After the dispersant is fully dissolved, weigh the CNTs with a mass fraction of 0.3g. The CNTs are multi-walled CNTs with a diameter of about 30-50nm. Add the CNTs to the dispersed solution, and seal the mouth of the beaker with plastic wrap to prevent the solution from Volatilize, then put the solution into an ultrasonic machine, an...

Embodiment 2

[0047] The present invention provides a kind of preparation method of CNTs / Al-Li high-strength composite material, such as figure 1 shown, including the following steps:

[0048] Step 1. Prepare a homogeneous CNTs solution

[0049] Weigh 60g of 2195 alloy powder, the particle size of the alloy powder is 325 mesh (45 m), weigh 300g of grinding balls, 240g of large balls, and 60g of small balls, that is, the ratio of balls to materials is 5:1, and the ratio of large and small balls is 4:1. Add 60g of isopropanol solution in a clean beaker, weigh 0.6g of the zwitterionic dispersant (dodecyldimethylaminobetaine), join in the isopropanol solution, stir with a magnetic stirrer for 10min, let After the dispersant is fully dissolved, weigh the CNTs with a mass fraction of 0.6g. The CNTs are multi-walled CNTs with a diameter of about 30-50nm. Add the CNTs to the dispersed solution, and seal the mouth of the beaker with plastic wrap to prevent the solution from Volatilize, then put th...

Embodiment 3

[0060] The invention provides a preparation method of CNTs / Al-Li high-strength composite material, comprising the following steps:

[0061] Step 1. Prepare a homogeneous CNTs solution

[0062]Weigh 60g of 2195 alloy powder, the particle size of the alloy powder is 325 mesh (45 m), weigh 300g of grinding balls, 240g of large balls, and 60g of small balls, that is, the ratio of balls to materials is 5:1, and the ratio of large and small balls is 4:1. Add 60g of isopropanol solution in a clean beaker, weigh 0.9g of the zwitterionic dispersant (dodecyldimethylaminobetaine), join in the isopropanol solution, stir with a magnetic stirrer for 10min, let After the dispersant is fully dissolved, weigh the CNTs with a mass fraction of 0.9g. The CNTs are multi-walled CNTs with a diameter of about 30-50nm. Add the CNTs to the dispersed solution, and seal the mouth of the beaker with plastic wrap to prevent the solution from Volatilize, then put the solution into an ultrasonic machine, an...

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Abstract

The invention discloses a preparation method of CNTs / Al-Li high-strength composite material, which is specifically implemented according to the following steps: 1. Weighing isopropanol solution, zwitterionic dispersant, 2195 alloy powder, multi-walled CNTs and zirconia mill Balls, mix isopropanol solution and zwitterionic dispersant, then add multi-walled CNTs for ultrasonic dispersion, and finally place in a vibrating powder mixer and mix to obtain CNTs solution; 2. Mix 2195 alloy powder and zirconia grinding balls and The CNTs solution is added into a ball mill tank for ball milling, standing still, and then dried to obtain prefabricated powder B; 3. Prepress prefabricated powder B, and then sinter to obtain composite material C; 4. Use muffle furnace to process composite material C Preheating, and then extruding with an extruder to obtain a composite profile D; 5, performing solution treatment and aging treatment on the composite profile D to obtain a CNTs / Al-Li high-strength composite material.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and relates to a preparation method of a CNTs / Al-Li high-strength composite material. Background technique [0002] Aluminum alloy has high specific strength, stiffness and good corrosion resistance, and has become an important lightweight material for rocket body structure. In order to meet the development requirements of the new generation of launch vehicles and improve the effective carrying capacity of the rocket, it is urgent to realize the lightweight of the rocket body structural parts. At the same time, the new generation of launch vehicles needs to realize the generalization, combination and serialization of models, and build a series of models to adapt to the launch of different payloads. This requires higher dimensional accuracy when the rocket body structural parts are formed, so as to reduce manual trimming, improve production efficiency, and meet the requirem...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10B22F1/10B22F3/02B22F3/14B22F3/20B22F3/24B22F9/04C22C21/16C22F1/057C21D1/18
CPCC22C1/05B22F9/04B22F3/02B22F3/14B22F3/20B22F3/24C22F1/002C22F1/057C22C21/16C22C26/00B22F2009/043B22F2003/208B22F2003/248C22C2026/002
Inventor 贾磊刘阳吕振林
Owner XIAN UNIV OF TECH
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