Dynamic bond-containing polyurethane material for 3D printing and its preparation method and use

A polyurethane material, 3D printing technology, applied in the direction of additive processing, organic chemistry, etc., can solve problems such as the application of polymers with functional groups that have not been seen, achieve good flexibility and improve mechanical properties

Active Publication Date: 2015-10-07
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of polymers with functio

Method used

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  • Dynamic bond-containing polyurethane material for 3D printing and its preparation method and use
  • Dynamic bond-containing polyurethane material for 3D printing and its preparation method and use
  • Dynamic bond-containing polyurethane material for 3D printing and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Dissolve equimolar amounts of furan and maleic anhydride in excess 1,4-dioxane, react at room temperature for 12 hours, smash the precipitate, filter with suction, wash with ether, and dry to obtain product III; product III React with methanol amine in an equimolar amount at a temperature of 65°C in excess methanol for 12 hours, put the reaction mixture into the refrigerator to cool and crystallize, then filter with suction, wash with ether, and dry to obtain the product IV; add the product IV to the excess In toluene, reflux reaction at a temperature of 100°C for 10h, then filter the solution and put it into a refrigerator to cool and crystallize, filter with suction, wash with ether, and dry to obtain the product Ⅴ; equimolar amounts of product Ⅴ and furfuryl alcohol at a temperature of 70°C, in React in excess toluene for 12 hours, mash the precipitate, filter with suction, wash with ether, and dry to obtain product VI, which is a diol containing a Diels-Alder bond; ...

Embodiment 2

[0043] Dissolve equimolar amounts of furan and maleic anhydride in excess 1,4-dioxane, react at room temperature for 18 hours, smash the precipitate, filter with suction, wash with ether, and dry to obtain product III; product III React with ethanolamine in an equimolar amount at a temperature of 68°C in excess methanol for 18 hours, put the reaction mixture in the refrigerator to cool and crystallize, then filter with suction, wash with ether, and dry to obtain product IV; add product IV to excess toluene reflux reaction at a temperature of 105°C for 12h, then filter the solution and put it into a refrigerator for cooling and crystallization, and then obtain the product Ⅴ through suction filtration, washing with ether, and drying; React in toluene for 18 hours, crush the precipitate, filter with suction, wash with ether, and dry to obtain product VI, which is a diol containing Diels-Alder bond;

[0044] Melt 100 parts of toluene diisocyanate and 55 parts of polyethylene adipa...

Embodiment 3

[0046] Dissolve equimolar amounts of furan and maleic anhydride in excess 1,4-dioxane, react at room temperature for 24 hours, smash the precipitate, filter with suction, wash with ether, and dry to obtain product III; product III React with propanolamine in an equimolar amount at a temperature of 71°C in excess methanol for 24 hours, put the reaction mixture in the refrigerator to cool and crystallize, then filter with suction, wash with ether, and dry to obtain product IV; add product IV to excess in toluene at a temperature of 110°C for 14 hours, then filtered the solution and placed it in a refrigerator to cool and crystallize, and then filtered, washed with ether, and dried to obtain the product V; equimolar amounts of the product V and furfuryl alcohol at a temperature of 76°C, React in excess toluene for 24 hours, crush the precipitate, filter with suction, wash with ether, and dry to obtain product VI, which is a diol containing Diels-Alder bond;

[0047] 100 parts of ...

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Abstract

The invention discloses a dynamic bond-containing polyurethane material for 3D printing and its preparation method and use. The preparation method utilizes, by mole, 100 parts of diisocyanate, 50-75 parts of polyester polyol or polyether polyol, 50-125 parts of a Diels-Alder bond-containing dihydric alcohol chain extender, 0-50 parts of a diisocyanate trimer cross-linking agent, 50-100 parts of a ligand-containing dihydric alcohol chain extender and 0-50 parts of a metal salt cross-linking agent. The Diels-Alder bond-containing dihydric alcohol chain extender and the diisocyanate trimer cross-linking agent are matched and are used for preparation of a Diels-Alder bond-containing polyurethane material. The ligand-containing dihydric alcohol chain extender and the metal salt cross-linking agent are matched and are used for preparation of a metal ligand-containing polyurethane material. Molecular structures of the prepared polyurethane materials contain a dynamic medical bond Diels-Alder bond and a metal ligand bond. The Diels-Alder bond-containing or metal ligand-containing polyurethane material has functions of self-restoration and self-bonding.

Description

technical field [0001] The invention relates to a dynamic bond-containing polyurethane material used for 3D printing, a preparation method and application thereof, and belongs to the field of polymer materials. Background technique [0002] In the past 20 years, 3D printing technology, as an emerging rapid prototyping technology, has developed very rapidly and is currently used in aerospace, national defense, biomedicine and other fields. 3D printing technology is based on digital models, using metal, ceramic and polymer materials, etc., to construct objects by layer-by-layer printing. Its types include fused deposition technology, selective laser sintering technology, stereolithography technology and layered solid manufacturing technology. [0003] Selective laser sintering is the most widely used 3D printing technology. C.R.Dechard first proposed the idea of ​​selective laser sintering in the patent US4863538 and successfully developed the laser sintering process in 1989...

Claims

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Application Information

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IPC IPC(8): C08G18/79C08G18/66C08G18/42C08G18/48C08G18/32C08G18/10B33Y70/00C07D491/18
CPCC07D491/18C08G18/10C08G18/4238C08G18/4277C08G18/48C08G18/6633C08G18/792C08G18/794C08G18/3819
Inventor 夏和生李志超卢锡立王振华费国霞
Owner SICHUAN UNIV
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