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Mixing method for preparing wcp/2024al composite radiation shielding material

A technology of shielding materials and composite radiation, which is applied in the field of mixing to improve the uniformity of tungsten carbide particle distribution in aluminum-based composite materials, can solve problems such as easy segregation and uneven dispersion, and achieve low production costs, simple process, The effect of improving the uniformity of particle distribution

Inactive Publication Date: 2017-03-22
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a kind of mixing method for preparing WCp / 2024Al composite radiation shielding material, which solves the problem of the dispersion of WC particles with larger particle size and density in the 2024Al powder matrix with smaller particle size and density. The problem of uniformity and easy segregation

Method used

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  • Mixing method for preparing wcp/2024al composite radiation shielding material
  • Mixing method for preparing wcp/2024al composite radiation shielding material
  • Mixing method for preparing wcp/2024al composite radiation shielding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Weigh 66g of WC powder and 33g of 2024Al powder according to the mass ratio of WC powder: 2024Al powder of 2:1. The WC powder that will take by weighing is poured in the coating pot (diameter is 300mm) on the water chestnut formula coating machine, setting coating machine main frame rotating speed is 1000r / min, is that the PMMA acetone solution of 8% is sprayed in mist form with mass concentration On the surface of WC powder, after observing that the WC powder is basically wet, add 3g of 2024Al powder and mix for 5 minutes. After the 2024Al powder is almost completely coated on the surface of WC particles, scrape off the WC particles attached to the coating pot wall, Spray the PMMA acetone solution on the WC particles again in the form of a mist until the WCp / 2024Al mixed powder is basically wet, then add 3g of 2024Al powder, mix for 5min, and repeat the above process until all the weighed 2024Al powder is added.

[0051] Transfer the mixed powder to the mold, press 70M...

Embodiment 2

[0058] Weigh 99g of WC powder and 33g of 2024Al powder according to the mass ratio of WC powder: 2024Al powder of 3:1. The WC powder that will take by weighing is poured in the coating pan (diameter is 300mm) of water chestnut formula coating machine, setting coating machine main machine rotating speed is 1200r / min, is that the PMMA acetone solution of 10% is sprayed in mist form with mass concentration On the surface of WC powder, after observing that the WC powder is basically wet, add 2g of 2024Al powder and mix for 5 minutes. After the 2024Al powder is almost completely coated on the surface of WC particles, scrape off the WC particles attached to the coating pot wall, Spray the PMMA acetone solution on the WC particles again in the form of a mist until the WCp / 2024Al mixed powder is basically wet, then add 2g of 2024Al powder, mix for 5min, and repeat the above process until all the weighed 2024Al powder is added.

[0059] Transfer the mixed powder to the mold, press 70MP...

Embodiment 3

[0066] Weigh 66g of WC powder and 33g of 2024Al powder according to the mass ratio of WC powder: 2024Al powder of 2:1. The WC powder that will take by weighing is poured in the coating pan (diameter is 300mm) on the water chestnut formula coating machine, setting coating machine main frame rotating speed is 1000r / min, is that the PMMA acetone solution that mass concentration is 3% is sprayed on On the surface of WC powder, after observing that the WC powder is basically wet, add 3g of 2024Al powder and mix for 5min. Spray the PMMA acetone solution on the WC particles in the form of a mist until the WCp / 2024Al mixed powder is basically wet, then add 3g of 2024Al powder, mix for 5min, and repeat the above process until all the weighed 2024Al powder is added.

[0067] Transfer the mixed powder to the mold, press 70MPa pressure on the powder metallurgy hydraulic press to form a compact compact with a diameter of 10mm, then grind, polish and observe the microscopic morphology, and ...

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Abstract

The invention discloses a material mixing method for preparing a wolfram carbide particle (WCp) / 2024Al composite radiation shield material. According to the material mixing method, wolfram carbide (WC) powder and 2024Al powder are used as raw materials, polymethyl methacrylate (PMMA) serves as a binding agent, acetone serves as a solvent, the materials are mixed through a particle coating method, and then the mixed powder is pressed into a WCp / 2024Al compact pressed blank. Compared with the prior art, the problems that WC particles with large particle diameter and density are not uniformly dispersed in a 2024Al powder substrate with quite small particle diameter and density and prone to segregation are solved.

Description

technical field [0001] The invention relates to a mixing method in the process of preparing tungsten carbide particles (WCp) reinforced aluminum-based composite shielding materials, in particular to a method for improving the distribution uniformity of tungsten carbide particles in aluminum-based composite materials, which belongs to anti-radiation shielding material field. Background technique [0002] With the continuous development of national defense research, radiation medicine and nuclear technology applications, various radioactive rays are widely used, and the electromagnetic environment in space is becoming increasingly complex. Nuclear reactions and X-rays, γ-rays, high-energy protons, electrons, neutrons, ions, radio waves, microwaves and other radiation in outer space will cause thermal ablation, mechanical damage, electromagnetic pulse damage or failure of various electronic systems, resulting in Failure and failure of electronic systems. [0003] Radiation pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C21/00
Inventor 陈善华蒋涛陈彦辉徐春霞唐奇杨晓敏
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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