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A kind of airgel reinforced aluminum matrix composite material and preparation method thereof

A composite material and reinforced aluminum matrix technology, which is applied in the field of airgel reinforced aluminum matrix composite materials and its preparation, can solve the problems of difficult dispersion of airgel particles, achieve low cost, low production cost, and maintain the effect of matrix density

Active Publication Date: 2020-08-18
BEIJING HONGWEINAJIN SCIENTIFIC & TECHNOLOGICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, in the face of problems such as the difficulty of dispersing airgel particles in the preparation process of airgel-reinforced aluminum-matrix composites, a method for preparing gel-reinforced aluminum-matrix composites is developed and provided to solve the problems in the above-mentioned background technology. question

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  • A kind of airgel reinforced aluminum matrix composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The aerogel-reinforced aluminum-based composite material prepared in this embodiment is 200 grams, the aerogel content is 0.05 wt.%, the aerogel component is silica, and the particle size of the aerogel particles is 0.1-0.5 μm. The base alloy is 1060 pure aluminum, the particle size of the aluminum powder is 250-325 mesh, and the impurity content is not more than 0.5 wt.%. The specific process is: put the weighed aerogel particles in absolute ethanol, the concentration ratio of aerogel to ethanol is 0.25mg / ml, ultrasonic treatment in an ultrasonic cleaning machine for 10min, the ultrasonic power is 100W, and get dispersed Uniform aerogel and ethanol mixed slurry; add aluminum powder to the above aerogel and ethanol mixed slurry, mechanically stir for 60 minutes at a speed of 400r / min, to obtain a uniform mixture of aerogel particles and aluminum powder Slurry. Then the above mixed slurry is poured into a flask, the alcohol in the mixed liquid is removed by distillation,...

Embodiment 2

[0037] The aerogel-reinforced aluminum-based composite material prepared in this example is 1000 grams, the aerogel content is 0.1 wt.%, the aerogel component is alumina, the aerogel particles have a particle size of 1 to 5 μm, and the matrix It is 2024 aluminum alloy (the particle size is 125-175 mesh, and the impurity content is not more than 0.3wt.%). The specific process is: put the weighed aerogel particles in absolute ethanol, the concentration ratio of aerogel to ethanol is 2mg / ml, ultrasonic treatment in an ultrasonic cleaning machine for 30 minutes, the ultrasonic power is 500W, and the dispersion is uniform The uniformly dispersed aerogel and ethanol mixed slurry; the aluminum powder is added to the aerogel and ethanol mixed slurry, and mechanically stirred for 60 minutes at a speed of 500r / min to obtain a uniformly mixed aerogel particle and aluminum powder Mix the slurry. Then, the above mixed slurry is poured into a beaker, the alcohol in the mixed liquid is remov...

Embodiment 3

[0039] The aerogel-reinforced aluminum-based composite material prepared in this example is 5000 grams, the aerogel content is 1.0 wt.%, the aerogel component is silica, the aerogel particles have a particle size of 5-20 μm, and the matrix The alloy is 1050 aluminum alloy (the grain size is 200-270 mesh, and the impurity content is not more than 0.2wt.%). The specific process is: put the weighed aerogel particles in absolute ethanol, the concentration ratio of aerogel to ethanol is 10mg / ml, ultrasonic treatment in an ultrasonic cleaning machine for 30min, the ultrasonic power is 300W, and the dispersion is uniform Aerogel and ethanol mixed slurry; add aluminum powder to the aerogel and ethanol mixed slurry, mechanically stir for 30min, the speed is 300r / min, to obtain a uniformly mixed mixed slurry of aerogel particles and aluminum powder . Then the above mixed slurry was poured into a three-necked flask, the alcohol in the mixed liquid was removed by distillation under reduce...

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Abstract

The invention discloses an aerogel reinforced aluminum matrix composite and a preparing method thereof, and belongs to the technical field of composites and preparing thereof. The technical problem that submicron and micron aerogel particles are difficultly and evenly dispersed in a metal aluminum matrix is solved. The content of aerogel in the composite ranges from 0.05 to 5.0wt.%, and the balance is pure aluminum or aluminum alloy. Through dispersion treatment of mechanical stirring, ultrasonic treatment and the like, the aerogel particles are evenly dispersed in absolute ethyl alcohol, purealuminum or aluminum alloy powder is added, the stirring and dispersing process is continuously applied, and the aerogel particle and aluminum powder mixed slurry is obtained. The aerogel particle and aluminum powder mixed slurry is put into a container, distilling is carried out to remove ethyl alcohol, and the dried aerogel particle and aluminum powder mixed slurry is obtained. The aerogel particle and aluminum powder mixed slurry is subjected to briquetting and hot extrusion process, and the aerogel reinforced aluminum matrix composite is obtained.

Description

Technical field [0001] The invention relates to the technical field of composite materials and their preparation, in particular to an aerogel reinforced aluminum-based composite material and a preparation method thereof. Background technique [0002] With the rapid development of my country's national economy, there is an increasing demand for lightweight, high-strength structural materials and conductive and thermally conductive materials in the fields of automobiles, aerospace, and power electronics. Aluminum alloy has the advantages of low density, high specific strength, and good electrical and thermal conductivity. It has broad applications in the fields of lightweight structural materials, wires and cables, and heat sinks. However, there are some shortcomings in the application of aluminum materials, such as insufficient strength of aluminum materials. Although traditional steel core aluminum stranded wires ensure the strength of cables, they also have large weight and high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/05C22C1/10B22F3/14B22F3/20
CPCB22F3/14B22F3/20B22F2003/208C22C1/05C22C21/00
Inventor 李光武王朝辉王强松杨书瑜胡保军
Owner BEIJING HONGWEINAJIN SCIENTIFIC & TECHNOLOGICAL CO LTD