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A 3D printing material with thermochromic properties

A 3D printing and thermochromic technology, applied in the field of 3D printing, can solve the problems of material cracking, affecting the appearance and performance of materials, and occurrence of splitting.

Active Publication Date: 2018-02-09
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since this cobalt dichloride thermochromic compound is an inorganic compound, it is suitable for use in an inorganic material system. If it is applied to an organic material system, phase separation will inevitably occur, leading to cracking of the material and affecting the overall appearance and appearance of the material. Performance

Method used

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  • A 3D printing material with thermochromic properties
  • A 3D printing material with thermochromic properties
  • A 3D printing material with thermochromic properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A polymerizable cobalt material provided in this embodiment has the following molecular structural formula:

[0029]

[0030] The preparation method of the polymerizable cobalt material of the present embodiment is as follows:

[0031] Firstly, 40 grams of vinylmethyldiethoxysilane and 60 grams of methyltriethoxysilane were mixed and polycondensed, and then 1 gram of cobalt dichloride was uniformly mixed with the co-polycondensation product to obtain a polymerizable cobalt material.

[0032] The polymerizable cobalt material prepared in this example was measured, and its color transition temperature was determined to be 50°C. Therefore, it was confirmed that the target product was obtained.

[0033] Mix the above 10 grams of polymerizable cobalt material, 45 grams of methyl methacrylate, 45 grams of epoxy acrylate prepolymer, and 3 grams of benzoin ether to obtain a homogeneous 3D printing material with thermochromic properties. It is used in a 3D printer with a li...

Embodiment 2

[0035] A polymerizable cobalt material provided in this embodiment has the following molecular structural formula:

[0036]

[0037] The preparation method is as follows:

[0038] Firstly, 30 grams of vinyltriethoxysilane and 70 grams of methyltriethoxysilane are mixed and polycondensed, and then 1 gram of cobalt dichloride and the co-condensation product are mixed uniformly to obtain a polymerizable cobalt material.

[0039] The polymerizable cobalt material prepared in this example was measured, and its color transition temperature was determined to be 55°C. Therefore, it was confirmed that the target product was obtained.

[0040] Mix the above 5 grams of polymerizable cobalt material, 35 grams of methyl acrylate, 60 grams of epoxy acrylate prepolymer, and 2 grams of bisbenzoylphenylphosphine oxide to obtain a homogeneous 3D thermochromic performance print material. It is used in a 3D printer with a light source wavelength of 360nm to obtain a three-dimensional shaped...

Embodiment 3

[0042] A polymerizable cobalt material provided in this embodiment has the following molecular structural formula:

[0043]

[0044] The preparation method is as follows:

[0045] Firstly, 30 grams of vinyltrimethoxysilane and 70 grams of methyltrimethoxysilane were mixed and polycondensed, and then 1 gram of cobalt dichloride was uniformly mixed with the polycondensation product to obtain a polymerizable cobalt material.

[0046] The polymerizable cobalt material prepared in this example was measured, and its color transition temperature was determined to be 53°C. Therefore, it was confirmed that the target product was obtained.

[0047] Mix the above 15 grams of polymerizable cobalt material, 35 grams of methyl acrylate, 50 grams of epoxy acrylate prepolymer, and 2 grams of fluorinated diphenyl titanocene to obtain a homogeneous 3D printing with thermochromic properties. Material. It is used in a 3D printer with a light source wavelength of 405nm to obtain a three-dime...

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Abstract

The invention discloses a 3D printing material with thermochromic properties, which is mainly composed of polymerizable cobalt materials, monomers, prepolymers and initiators. The mass ratio of the aforementioned components is 0.1-20:10- 99: 10-99: 0.01-10. The polymerizable cobalt material has a general formula as follows: wherein, R1 can be methyl, phenyl and hydroxyl; R2 can be methyl, alkoxy containing 1 to 3 carbon atoms, and hydroxyl. The 3D printing material is applied on a 3D printing device based on the photocuring method. The 3D printing device uses a light source with a wavelength of 250-1000nm. The three-dimensionally formed object has the property of discoloration when heated, and the surface of the object is smooth without cracks.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printing material with thermochromic properties and its application. Background technique [0002] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. The technology has applications in mold making, jewelry, footwear, industrial design, architecture, automotive, aerospace, medical industry, education, geographic information systems, and other fields. In terms of its printing equipment, it is divided into fused deposition type (FDM), layered solid manufacturing (LOM), stereolithography (SLA), electron beam free forming manufacturing (EBF), direct metal laser sintering (DMLS), electron beam Melting molding (EBM), selective laser melting molding (SLM), selective heat sintering (SHS) and selective laser sintering ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/06C08F291/10C08F220/14C08G77/398C08G77/20C09K9/02B33Y70/00B33Y30/00
Inventor 孟庆华江阳陈利华郑少瑜
Owner SHANGHAI JIAOTONG UNIV