3D printing method for structured materials based on polymerization-induced microphase separation

By combining a direct-write multi-material extrusion system with a long-channel tapered extruder, the directional distribution of polymerization-induced microphase separation materials is achieved, solving the problem of disordered arrangement of nanostructures in traditional 3D printing, and obtaining site-specific material properties and a rich range of applications.

CN117325449BActive Publication Date: 2025-09-19JILIN UNIVERSITY
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Patent Information

Application Number
CN202311290133.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-08
Publication Date
2025-09-19
Estimated Expiration
2043-10-08

AI Technical Summary

Technical Problem

Traditional 3D printing technology cannot achieve the periodic and orderly arrangement of nanostructures within the material system, resulting in isotropic material properties at the macro level, which cannot meet the customized mechanical and other physical property requirements.

Method used

A direct-write multi-material extrusion system is used, utilizing the shearing effect of a long-channel tapered extruder head and combining it with polymerization-induced microphase separation technology to achieve the directional distribution of materials with different polymerization degrees and the printing of patterned structures, and the nanostructure is preliminarily solidified through a photocuring module.

Benefits of technology

It realizes the site-specific properties of materials, the directional distribution of nanostructures and the control of structure and properties at the macro scale, enriching the scope of application.

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Abstract

The present invention relates to the field of 3D printing additive manufacturing, particularly a method for 3D printing structured materials based on polymerization-induced microphase separation. This method utilizes polymerization-induced microphase separation technology to polymerize and synthesize a variety of macroporous trimethylolpropane (PBAn-CTA) with nanoscale domains of varying degrees of polymerization. These polymerization-induced microphase separation material systems with varying degrees of polymerization are then loaded into separate material barrels in a direct-write multi-material extrusion system. The shearing action of a long-channel tapered extruder head is then used to induce the directional distribution of separated microphases. Combined with the rational planning of the printing path, a patterned structure is formed, achieving integrated structure-performance printing of the structured material and obtaining site-specific material properties. The present invention provides a new technical solution for the preparation of structured materials.
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