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High-precision 3D printing thermochromic material and its preparation method and application method

A thermochromic material and 3D printing technology, applied in the field of 3D printing, can solve the problems of 3D structure surface roughness, lower printing accuracy, long production cycle, etc., and achieve the effect of smooth surface without cracks, easy industrial production, and short production cycle

Active Publication Date: 2022-05-17
湖南昇微新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still has great limitations, mainly in two aspects: first, the color-changing material is quite sensitive to the environment, and it is easy to damage the color-changing material in the process of heating and melting deposition, and seriously loses the color-changing function; second, the use of fusion deposition molding process Manufacturing, the production cycle is long, and the drastic changes in cold and heat make the surface of the printed 3D structure rough and cracked, which seriously reduces the printing accuracy

Method used

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  • High-precision 3D printing thermochromic material and its preparation method and application method
  • High-precision 3D printing thermochromic material and its preparation method and application method
  • High-precision 3D printing thermochromic material and its preparation method and application method

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preparation example Construction

[0041] A method for preparing a high-precision 3D printing thermochromic material, the method comprising:

[0042] Stir and mix cyclotrimethylolpropane acrylate, ethoxylated trimethylolpropane triacrylate, acrylamide morpholine, photoinitiator and light absorber at a stirring speed of 100-300r / min for 30-50min , to obtain a mixed liquid;

[0043] Slowly add thermochromic powder into the mixed liquid while stirring, stir and mix at a stirring speed of 100-300r / min, and stir for 20-30min to obtain a thermochromic material for 3D printing.

[0044] The application method of high-precision 3D printing thermochromic material, the method includes:

[0045] Add the thermochromic material for 3D printing into the printer, and print under a light source with a wavelength of 355-405nm for an exposure time of 2-10s to obtain a three-dimensional shaped object. Among them, the printer adopts digital light processing DLP, three-dimensional high-precision forming SLA, and surface projectio...

specific Embodiment 1

[0046] High-precision 3D printing thermochromic materials, the components by mass percentage include:

[0047]

[0048] A method for preparing a high-precision 3D printing thermochromic material, the method comprising:

[0049] Mix cyclotrimethylolpropane acrylate, ethoxylated trimethylolpropane triacrylate, acrylamide morpholine, photoinitiator TPO, fluorescent whitening agent OB, ultraviolet light absorber UV-326, stir and mix, stirring speed Be 200r / min, stir 40min, obtain mixed liquid;

[0050] Slowly add pink thermochromic powder into the mixed liquid while stirring, stir and mix at a stirring speed of 300r / min, and stir for 20min to obtain a thermochromic material for 3D printing.

[0051] The application method of high-precision 3D printing thermochromic material, the method includes:

[0052] Add the thermochromic material for 3D printing into the PμSL printer, and print it under a light source with a wavelength of 405nm and an exposure time of 5s to obtain a thre...

specific Embodiment 2

[0053] High-precision 3D printing thermochromic materials, the components by mass percentage include:

[0054]

[0055] A method for preparing a high-precision 3D printing thermochromic material, the method comprising:

[0056] Mix cyclotrimethylolpropane acrylate, ethoxylated trimethylolpropane triacrylate, acrylamide morpholine, photoinitiator 819 and ultraviolet light absorber UV-326, stir and mix at a stirring speed of 250r / min, stir 40min, obtain mixed liquid;

[0057] Slowly add yellow thermochromic powder into the mixed liquid while stirring, stir and mix at a stirring speed of 240r / min, and stir for 30min to obtain a thermochromic material for 3D printing.

[0058] The application method of high-precision 3D printing thermochromic material, the method includes:

[0059] Add the thermochromic material for 3D printing into the SLA printer, and print it under a light source with a wavelength of 405nm and an exposure time of 8s to obtain a three-dimensional shaped obj...

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Abstract

The invention discloses a high-precision 3D printing thermochromic material, a preparation method and an application method thereof. The components by mass percentage include: cyclotrimethylolpropane acrylate 15-60%, ethoxylated trimethylolpropane triacrylic acid 10-70% ester, 5-20% acrylamide morpholine, 0.5-15% thermochromic powder, 0.5-5% photoinitiator, 0.05-2% light absorber. The thermochromic powder in the thermochromic material for 3D printing is evenly fused with the photosensitive resin, so that the three-dimensionally formed object has high precision, smooth surface and no cracks, and has reversible thermochromic performance. The material is manufactured by 3D printing technology, in 3D structure The anti-counterfeit identification has a huge application prospect; and the preparation method has a short production cycle, saves time and effort, and is easy for industrial production.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a high-precision 3D printing thermochromic material, a preparation method and an application method thereof. Background technique [0002] 3D printing is a technology that uses bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing based on digital model files. The technology is now widely used in jewelry, footwear, industrial design, architecture, engineering, automotive, aerospace, dental and medical industries, education and other fields. 3D printing technologies mainly include: fused deposition modeling, layered solid manufacturing, electron beam free forming manufacturing, electron beam melting molding, selective laser melting molding, selective thermal sintering, selective laser sintering, stereolithography rapid prototyping, digital light Handling molding, surface projection micro-stereolithography, etc. Among them, stere...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/14C08F220/58C08F2/44C08F2/50B29C64/124B29C64/314B33Y40/00B33Y70/10G03F7/004G03F7/027
CPCC08F222/10C08F2/44C08F2/50B29C64/124B29C64/314B33Y40/00B33Y70/00G03F7/004G03F7/027
Inventor 陈雷刘鹏车颜贤罗娟娜
Owner 湖南昇微新材料有限公司