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Application of a room temperature self-healing elastic material

An elastic material, self-healing technology, applied in the field of 3D printing, can solve the problems of difficult to obtain large-scale complex structures, difficult to repair, etc., achieve good market application prospects, and enhance the effect of interlayer adhesion

Active Publication Date: 2021-11-09
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide the application of a room temperature self-healing elastic material, which solves the problems that existing 3D printing products are difficult to obtain large-scale complex structures and difficult to repair

Method used

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  • Application of a room temperature self-healing elastic material
  • Application of a room temperature self-healing elastic material
  • Application of a room temperature self-healing elastic material

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Experimental program
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Embodiment 1

[0038] 1. Experimental raw materials

[0039] Polytetramethylene ether glycol (PTMEG, Mn=~1000g mol -1 , Aladdin), isophorone diisocyanate (IPDI, 99%, Aladdin), dibutyltin dilaurate (DBTDL, 95%, Aladdin); dimethylglyoxime (DMG, 98%, Sinopharm Group), glycerin (GLY , 99%, Sinopharm Group), copper chloride (CuCl 2 , 99%, Sinopharm Group). Acetone (99.8%, Yongcheng Chemical).

[0040] 2. Preparation method

[0041]① Material synthesis: Take polytetrahydrofuran diol (PTMG, 6g, 2mmol), dimethylglyoxime (DMG, 0.696g, 2mmol), glycerin (GLY, 0.0828g, 0.3mmol) and place them in a glass container equipped with a magnetic stirrer in 20ml acetone; then add isophorone diisocyanate (IPDI, 2.9637g, 4.45mmol), copper chloride solution (acetone, 0.016mmol / mL, 1mL), dibutyltin dilaurate (DBTDL, 0.0975g , 1wt%), reacted at 50°C for 2 hours; then transferred the reaction mixture to a tetrafluoro mold, put it in an oven at 50°C for 24 hours to fully react the mixture, and then continued curin...

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Abstract

The invention relates to the application of a room temperature self-healing elastic material. The room temperature self-healing elastic material is room temperature self-healing polyurethane, which is applied to 3D printing and its product splicing. The room temperature self-healing elastic material used in the present invention has oxime urethane groups and dynamic metal-coordination bonds, which can enhance the adhesion between layers of printed products, and its room temperature self-healing property can realize the splicing and assembly of printed parts without 3D printing products with complex geometric structures can be obtained with external stimuli and support materials, which has a good market application prospect.

Description

technical field [0001] The invention belongs to the field of 3D printing, and in particular relates to the application of a self-healing elastic material at room temperature. Background technique [0002] 3D printing technology is an advanced additive manufacturing technology that is rapidly developing in the manufacturing field in this century, based on digital model files, and based on the principle of layered manufacturing and layer-by-layer superposition. This technology can produce complex, fine and personalized structures that cannot be produced by traditional processing methods such as blow molding, injection molding, and molding. In particular, it can realize the construction of complex geometric structures inside products. Electronic devices, artificial organs, medical devices and many other fields have broad application prospects. [0003] Commonly used 3D printing processing methods include selective laser sintering (SLS), fused deposition modeling (FDM), and ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32B33Y70/00
CPCB33Y70/00C08G18/3819C08G18/4211C08G18/4238C08G18/4277C08G18/4825C08G18/4829C08G18/4833C08G18/4854C08G18/66
Inventor 游正伟左涵
Owner DONGHUA UNIV