Furyl polyurethane material containing Diels-Alder structure as well as preparation method and application of furyl polyurethane material

By preparing the furanyl polyurethane material containing Diels-Alder structure, using amidation, aminol and Diels-Alder addition reactions, the problem of poor interlayer bonding strength in 3D printing is solved, and the interlayer strength is significantly improved, and the application of 3D printing technology is expanded.

CN120248260APending Publication Date: 2025-07-04JF POLYMERS (SUZHOU) CO LTD
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Patent Information

Application Number
CN202311817947.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-12-27
Publication Date
2025-07-04

AI Technical Summary

Technical Problem

In the field of 3D printing, especially in the FDM technology, the problem of poor bonding strength between layers leads to poor adhesion or cracks between layers, and the existing methods are limited in improvement and high in cost.

Method used

Furanyl polyurethane material containing Diels-Alder structure is used to prepare furyl polyurethane monomers through amidation, aminol and Diels-Alder addition reactions, and react with bismaleimide compounds to form a polymer with reversible dynamic covalent bonds, which is used for 3D printing of wires to improve interlayer binding strength.

Benefits of technology

Without losing other properties of the material, the interlayer strength is significantly improved by 50-200%, solving the problem of poor interlayer bonding strength and expanding the application scope of 3D printing technology.

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Abstract

The invention provides a preparation method of a furyl polyurethane material containing a Diels-Alder structure, the furyl polyurethane material and application of the furyl polyurethane material in 3D printing. The preparation method comprises the following steps: carrying out amidation reaction on furanmethyl ester and diethanol amine to generate a furyl polyamide monomer; the furyl polyamide monomer and a polyisocyanate compound are subjected to an amine-alcohol reaction to generate a furyl polyurethane monomer; and the furyl polyurethane monomer and a bismaleimide compound are subjected to a Diels-Alder addition reaction, such that the furyl polyurethane material containing the Diels-Alder structure is obtained.
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