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Efficient directional radiation shielding protection structure and 3D printing method thereof

A 3D printing, directional radiation technology, applied in shielding, 3D object support structure, additive manufacturing, etc., can solve the problems of difficult processing, many processing defects of matrix materials and reinforcement materials, and suboptimal performance.

Active Publication Date: 2021-01-08
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to solve the problems of many processing defects, difficult processing and suboptimal performance of the base material and the reinforcing material, the present invention provides a high-efficiency radiation shielding method and its 3D printing method
The 3D printed skeleton structure solves the defects such as warping and deformation in the process of filling large workpieces with a single polymer material, and the manufactured workpieces have high precision.

Method used

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  • Efficient directional radiation shielding protection structure and 3D printing method thereof
  • Efficient directional radiation shielding protection structure and 3D printing method thereof
  • Efficient directional radiation shielding protection structure and 3D printing method thereof

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Experimental program
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Effect test

Embodiment

[0069] Objective: To shield neutron gamma rays in an environment of 300°C, and make a cuboid solid-filled shield with a size of 300cm (length) × 300cm (width) × 100cm (height) as an example.

[0070] Frame material selection: choose PEEK, a high-temperature material with a melting point of 343°C, or a more high-temperature-resistant material;

[0071] Skeleton unit selection: PEEK material can be selected as the skeleton unit, 10% PEEK carbon fiber material, 30% wtPEEK boron carbide composite material, 85% wtPEEK tungsten composite material can also be selected. Among them, 10% PEEK carbon fiber material is the best, with the smallest thermal expansion coefficient. At the same time, PEEK carbon fiber composite material has excellent mechanical properties.

[0072] Shield production: take 10% PEEK carbon fiber as an example to make the outer contour and skeleton. The shape of the skeleton unit is hexagonal, circular, and cross-shaped. The shape, size, and depth of the skeleton...

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Abstract

The invention discloses an efficient directional radiation shielding protection structure and a 3D printing method thereof. The 3D printing method comprises the following steps that a first spray headis adopted for printing a base material to form a framework unit with a filling cavity; a filling reinforcing material is printed in the filling cavity of the framework unit through a second spray head; a fixing material is sprayed on the upper surface layer of the reinforcing material through a third spray head to form a thin film and solidify the thin film; and the steps are repeated until theprocessing is finished. According to the 3D printing method, through a framework unit structure, the defects of warping, deformation and the like in the large workpiece solid filling manufacturing process of a macromolecule single material are overcome, and the manufactured workpiece has high precision.

Description

technical field [0001] The invention relates to the field of radiation shielding, in particular to a high-efficiency radiation shielding plate and a 3D printing method thereof. Background technique [0002] As a clean energy source, nuclear energy provides continuous power. When people use nuclear energy, they need to consider ray radiation, especially neutron and gamma ray radiation. The efficiency and safety of ray radiation shielding are the primary issues to ensure the safety of nuclear utilization. In a special thermal environment, a lightweight structure of the shielding body is required within a limited space, but also ideal mechanical properties and excellent shielding performance are required, which cannot be achieved by traditional processing and manufacturing. Due to its excellent properties such as high strength, high toughness, high temperature resistance, and light weight, polymer materials have promoted the rapid development of industries such as machinery, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B33Y10/00G21F3/00
CPCB29C64/118B33Y10/00G21F3/00
Inventor 曹毅吴垠李涤尘严圣超
Owner XI AN JIAOTONG UNIV
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