Progress in Photocurable 3D Printing of Photosensitive Polyurethane: A Review

Macromolecular Rapid Communications, Journal Year: 2023, Volume and Issue: 44(18)

Published: June 9, 2023

In recent years, as a class of advanced additive manufacturing (AM) technology, photocurable 3D printing has gained increasing attention. Based on its outstanding efficiency and molding accuracy, it is employed in various fields, such industrial manufacturing, biomedical, soft robotics, electronic sensors. Photocurable technology based the principle area-selective curing photopolymerization reaction. At present, main material suitable for this photosensitive resin, composite mixture consisting prepolymer, reactive monomer, photoinitiator, other additives. As technique research deepens application gets more developed, design materials different applications becoming hotspot. Specifically, these not only can be photocured but also have excellent properties, elasticity, tear resistance, fatigue resistance. Photosensitive polyurethanes endow resin with desirable performance due to their unique molecular structure including inherent alternating hard segments, microphase separation. For reason, review summarizes comments progress polyurethanes, analyzing advantages shortcomings offering an outlook rapid development direction.

Language: Английский

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3D Printing of High Viscosity UV‐Curable Resin for Highly Stretchable and Resilient Elastomer

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(49)

Published: Aug. 2, 2023

Elastomers prepared via vat photopolymerizationus ually exhibit unsatisfied mechanical properties owing to their insufficient growth of molecular weight upon UV exposure. Increasing the ratio oligomer in resin system is an effective approach enhance properties, yet viscosity UV-curable increases dramatically; this hinders its printing. In study, a linear scan-based photopolymerization (LSVP) which can print high-viscosity resins implemented 3D oligomer-dominated dual-curing mechanism. A polyurethane methacrylate blocking first synthesized and then mixed with commercialized bifunctional oligomer, photoinitiator, primary amine as chain extender prepare for LSVP system. The deblocked isocyanate further crosslinked thermal treatment construct highly entangled polymer network. optimal parameters are investigated, resilience 3D-printed elastomer evaluated through continuous tensile loading unloading tests. Subsequently, complex structured elastomers printed, exhibiting favorable durability without defects. results obtained from work will provide reference preparing elastomeric devices excellent physical expand application scope new fields.

Language: Английский

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Self‐Healing Materials for 3D Printing

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(30)

Published: March 21, 2024

Abstract Additive manufacturing/3D printing is praised as revolutionary by many because it enables the decentralized and on‐demand manufacturing of complex shapes. With ongoing rapid development increased availability these technologies, has become crucial to develop novel materials with unique functionalities for 3D‐printed components. Advances in self‐healing have resulted structures capable recovering from physical damage through material remendability. By applying solutions 3D printing, researchers are attempting overcome current barriers such low mechanical properties, waste, printability issues, among others. This review summarizes state research on used presents recent progress The particular focus use intrinsic polymer self‐healing, which prominent published literature. mechanisms proposed systems well their composition highlighted, intended application respect focused on. scientific technological challenges involved implementation approaches potential functional applications new also discussed.

Language: Английский

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Self-healing polyurethane elastomers with dynamic crosslinked networks for complex structure 3D printing

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160193 - 160193

Published: Feb. 1, 2025

Language: Английский

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Progress in Vat Photopolymerisation Additive Manufacturing of Ceramic Lattice Structures and Applications

Thin-Walled Structures, Journal Year: 2025, Volume and Issue: 209, P. 112918 - 112918

Published: Jan. 6, 2025

Language: Английский

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3D Printing of Self‐Healing Materials

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: Oct. 25, 2023

This review article presents a comprehensive overview of the latest advances in field 3D printable structures with self-healing properties. Three-dimensional printing (3DP) is versatile technology that enables rapid manufacturing complex geometric precision and functionality not previously attainable. However, application 3DP still limited by availability materials customizable properties specifically designed for additive manufacturing. The addition within printed objects high interest as it can improve performance lifespan structural components, even enable mimicking living tissues biomedical applications, such organs printing. will discuss analyze most relevant results reported recent years development polymeric be processed via After introducing chemical physical mechanism exploited, literature here focus particular on printability repairing performances. At last, actual perspective possible critically discussed.

Language: Английский

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Mold‐Free Manufacturing of Highly Sensitive and Fast‐Response Pressure Sensors Through High‐Resolution 3D Printing and Conformal Oxidative Chemical Vapor Deposition Polymers

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(41)

Published: July 18, 2023

A new manufacturing paradigm is showcased to exclude conventional mold-dependent of pressure sensors, which typically requires a series complex and expensive patterning processes. This mold-free leverages high-resolution 3D-printed multiscale microstructures as the substrate gas-phase conformal polymer coating technique complete sensing platform. The array dome spike structures with controlled density ensures large contact surface pressures applied extended linearity in wider range. For uniform elements on microstructured surface, oxidative chemical vapor deposition employed deposit highly conductive element, poly(3,4-ethylenedioxythiophene) at low temperatures (<60 °C). fabricated sensor reacts sensitively various ranges (up 185 kPa-1 ) depending features shows an ultrafast response time (≈36 µs). mechanism investigations through finite element analysis identify effect structure figure-of-merit performance. These unique findings are expected be significant relevance technology that higher capability, scalability, facile adjustment geometry cost-effective manner.

Language: Английский

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Wearable flexible pressure sensors: An intriguing design towards microstructural functionalization

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 12(12), P. 6826 - 6874

Published: Dec. 19, 2023

Microstructures can endow flexible pressure sensors with high sensitivity and a wide linear sensing range, ensuring the comprehensive performance of medical monitoring intelligent robots.

Language: Английский

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Ionic conductive elastomer with enhanced tensile strength and Skin-Like modulus for artificial skin based on dynamic Polyurethane-urea

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159292 - 159292

Published: Jan. 6, 2025

Language: Английский

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An Unprecedented Strategy with Electric Double Layer and Adaptive Ionic Liquid in Fully Ionogel Fiber-Based TENG for Enhanced Output and Dynamic Stability

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110658 - 110658

Published: Jan. 1, 2025

Language: Английский

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