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Application of room-temperature self-repairing 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: 2019-11-01
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 room-temperature self-repairing elastic material
  • Application of room-temperature self-repairing elastic material
  • Application of room-temperature self-repairing elastic material

Examples

Experimental program
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Effect test

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 an application of a room-temperature self-repairing elastic material. The room-temperature self-repairing elastic material is room-temperature self-repairing polyurethane andis applied to 3D printing and splicing of 3D printed products. The room-temperature self-repairing elastic material adopted in the invention has an oxime ammonia ester group and a dynamic metal-coordination bond, can enhance adhesion among layers of the printed products, realize splicing assembly of the printed parts through the room-temperature self-repairing performance, and obtain the 3D printed products with complex geometric structures without the need of external stimuli and supporting material, and has good market application prospects.

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 Applications(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