Self-Healing 3D Printing Material for Micro-Crack Repair
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Solution Overview
Problem
3D printed products are prone to micro-cracks and damage, leading to reduced functionality, increased maintenance costs, and potential safety hazards, as they cannot be restored to a normal state once damaged.
Innovation Solution
Development of self-healing materials for 3D printing that utilize reversible covalent bonds, non-covalent interactions, or coordinate bonds, such as disulfide bonds, imine bonds, hydrogen bonds, or metal coordination interactions, which allow for thermal or photo-induced healing, enabling the material to detect and repair micro-cracks autonomously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional 3D printing materials are used, then manufacturing complexity is reduced and production efficiency is improved, but the product reliability deteriorates due to micro-cracks and damage that cannot be self-repaired
Solution Approach 1:
The patent changes the chemical parameters of the 3D printing material by incorporating reversible covalent bonds (disulfide bonds, imine bonds) and non-covalent interactions (hydrogen bonds, metal coordination) into the polymer structure. These parameter changes enable the material to dynamically respond to damage through bond breaking and reforming, allowing self-healing while maintaining manufacturing efficiency.
Solution Approach 2:
The patent creates composite material systems by combining conventional 3D printing polymers with self-healing functional groups and mechanisms. The composite structure integrates the ease of manufacturing of standard polymers with the self-healing capabilities of specialized molecular structures, achieving both high productivity and reliability.
2Reliability
If self-healing materials are used, then product reliability is improved through autonomous damage repair, but device complexity increases due to the sophisticated molecular structures and healing mechanisms
Solution Approach 1:
The patent implements self-service by designing materials that autonomously detect and repair their own damage without external intervention. The reversible bonds automatically break and reform in response to micro-cracks, enabling the material to self-diagnose and self-heal, thereby improving reliability while minimizing the need for complex external monitoring systems.
Solution Approach 2:
The patent replaces complex mechanical damage detection and repair systems with molecular-level chemical mechanisms. Instead of using sensors, actuators, and external repair equipment, the self-healing functionality is embedded at the molecular level through reversible bonds, reducing overall system complexity while maintaining high reliability.
3Ease of manufacture
If conventional 3D printing materials are used, then manufacturing cost is reduced, but maintenance cost increases due to inability to restore damaged products
Solution Approach 1:
The patent applies discarding and recovering by enabling the material to recover from damaged states through self-healing. Instead of discarding entire damaged components, the reversible bonds allow local recovery of functionality, extending product life and reducing maintenance costs while maintaining simple manufacturing processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The self-healing material effectively prolongs the service life of 3D printed products by maintaining performance throughout the healing process, reducing maintenance costs, and increasing resource utilization, with a healing rate of up to 98% within 6 hours.
Implementation Method 1
a self-healing material achieving a self-healing function by utilizing a reversible covalent bond
Implementation Method 2
the non-covalent interaction in the self-healing material achieving a self-healing function by utilizing a non-covalent interaction is a hydrogen bond
Implementation Method 3
the coordinate bond in the self-healing material achieving a self-healing function by utilizing a coordinate bond is a coordinate bond formed by nitrogen, oxygen, carbon, boron, sulfur or phosphorus with metal
Implementation Method 4
a self-healing mode of the self-healing material is one or more of thermal healing
Implementation Method 5
a self-healing mode of the self-healing material is one or more of thermal healing, photo-healing
Data Source
AI summary
The present invention provides application of a self-healing material in 3D printing. In the present invention, a self-healing material is taken as a 3D printing material, and the material is intelligently detected and spontaneously healed by utilizing a self-healing function of the self-healing material, so that a potential damage to the self-healing material caused by generated micro-cracks can be prevented. Compared with molding conditions of a product, gentle and mild conditions are required for self-healing, and the overall performance of the product cannot be affected from beginning to end of a self-healing process, thereby reducing the maintenance cost of the product, prolonging the service life of the product, and increasing the utilization rate of resources.