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A two-component material with a sandwich structure and its preparation method based on 3D printing

A 3D printing, two-component technology, applied in the field of additive manufacturing, can solve the problems of no disclosure, complex structure, and many parts, and achieve the effect of optimizing performance and improving performance

Active Publication Date: 2021-09-21
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of 3D printer has many components and complex structures, and a certain component that fulfills its key role is often not disclosed

Method used

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  • A two-component material with a sandwich structure and its preparation method based on 3D printing
  • A two-component material with a sandwich structure and its preparation method based on 3D printing
  • A two-component material with a sandwich structure and its preparation method based on 3D printing

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preparation example Construction

[0048] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0049] Unless otherwise specified, the experimental methods used in the following examples are conventional methods; the reagents and materials used in the following examples, unless otherwise specified, can be obtained from commercial sources.

[0050] In the description of the present invention, it should be noted that the terms "first", "second", "third" and so on are used for description purposes only, and do not indicate or imply relative importance.

[0051] In the description of t...

Embodiment 1

[0055] Such as figure 1 As shown, this embodiment provides a nozzle for 3D printing. The nozzle includes an upper part 1 and a lower part 2 of the nozzle. The upper part 1 of the nozzle is connected with the lower part 2 of the nozzle. The upper part 1 of the nozzle is a cylinder structure, the lower part 2 of the nozzle is a circular platform structure, and the cross-sectional area of ​​the platform away from the upper part 1 of the nozzle is smaller than the cross-sectional area of ​​the circular platform connected to the upper part 1 of the nozzle; the upper part 1 of the nozzle is far away from the upper part 1 of the nozzle One end of the connection with the lower part 2 of the nozzle forms the first material inlet 4;

[0056] The spray head also includes a second material inlet 3 and a layered grid;

[0057] The layered grid is arranged inside the shower head; the layered grid includes a first connection part 5, a second connection part 6 and a third connection part 7, ...

Embodiment 2

[0067] 3D printing was carried out using the nozzle of the above-mentioned Example 1, the first component material was PLA, the brand was 4032D, NatureWorks. The second component material is flexible epoxy resin, curing agent and accelerator, the mass ratio of the three is 78:15:7, and the flexible epoxy resin is formed by the reaction of two carboxyl groups of dimer acid and epichlorohydrin (purchased from Huibo New Material Technology (Shanghai) Co., Ltd.), the curing agent is 594 (purchased from Huibai New Material Technology (Shanghai) Co., Ltd.), and the accelerator is quaternary ammonium salt (purchased from Aladdin). The kinetic viscosity was adjusted to 50 cP at room temperature by the diluent acetone. Through external pressure control, the mass ratio of the first component material and the second component material is 4:1.

[0068] 3D printing parameter settings: the diameters of the nozzles are 0.4mm, 0.6mm and 0.7mm respectively, the printing temperature is 200°C, ...

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Abstract

The invention provides a two-component material with a sandwich structure and a preparation method thereof based on 3D printing. Among them, the lines deposited by the nozzle in the 3D printing process have a sandwich structure, and the ratio control of the two components in the deposited lines can be realized by adjusting the process parameters, so as to achieve the regulation of microscopic performance, and then realize the microscopic properties of the workpiece. Control of the performance of each part. Compared with single-component printing materials, the present invention realizes the proportion control of the two component materials in the deposition line through the selection of nozzle design and material system, and achieves the regulation of microscopic performance, and then realizes the performance control of each part in the macroscopic part. regulation and complementarity. At the same time, by introducing the second component material, it can make up for the deficiency in the performance of the first component material, improve the performance of microscopic deposition lines, and optimize the performance of the entire printed product.

Description

technical field [0001] The invention relates to a two-component material with a sandwich structure and a preparation method based on 3D printing, belonging to the technical field of additive manufacturing. Background technique [0002] With the maturity of electronic information technology, 3D printing also emerged and became popular on a large scale, opening the era of moldless manufacturing. "The Economist" magazine once described that digital manufacturing technology represented by 3D printing will rewrite the production mode of the manufacturing industry, and then change the operation mode of the industrial chain. [0003] 3D printing, also known as Additive Manufacturing (AM), appeared in the 1970s. According to the definition given by the American Association for Testing and Materials International Standard Organization F42 Additive Manufacturing Technical Committee: 3D printing is a process of manufacturing objects by connecting layers of materials based on 3D model ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/209B29C64/336B33Y30/00B33Y40/00B33Y70/00B33Y70/10B29K63/00B29K67/00B29K69/00B29K75/00
CPCB29K2063/00B29K2067/046B29K2069/00B29K2075/00B33Y30/00B33Y40/00B33Y70/00B29C64/209B29C64/336
Inventor 王剑磊王西柚吴立新
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI