Influence of the Magnetization of Thermally Expandable Particles on the Thermal and Debonding Properties of Bonding Joints DOI Creative Commons
J. Abenójar, Sara López de Armentia, Juan Carlos del Real Romero

и другие.

Inorganics, Год журнала: 2024, Номер 12(5), С. 129 - 129

Опубликована: Апрель 28, 2024

This study addresses the challenge of recycling adhesive bonds, as their disassembly is irreversible and damages substrates. It explores use thermally expandable particles (TEPs), which, when heated, expand weaken bond. The magnetization TEPs allows us to control distribution using a magnetic field. work aims obtain magnetized TEPs, influence on resin curing, mechanical performance, durability, test mobility in graded analyze temperature-induced debonding process. are characterized various techniques, including differential scanning calorimetry, nuclear resonance, electron microscopy. Additionally, impact 25 wt.% epoxy curing examined Kamal model. Adhesion assessments were conducted through tensile shear tests single-lap-joint specimens, while bond durability was determined via wedge testing. found that reduces time, though it decreases strength increasing durability. crack formation energy higher with total length lower long-term tests. Once debonded, substrates sanded reused raw material.

Язык: Английский

A Biobased Epoxy Vitrimer with Dual Relaxation Mechanism: A Promising Material for Renewable, Reusable, and Recyclable Adhesives and Composites DOI Creative Commons
Pere Verdugo, David Santiago, Silvia De la Flor

и другие.

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(15), С. 5965 - 5978

Опубликована: Апрель 4, 2024

This study presents the synthesis of a novel biobased epoxy monomer derived from vanillin and cystamine, incorporating imine disulfide exchangeable groups within its structure. A series epoxy-based vitrimers with two simultaneous exchange relaxation processes have been produced using this monomer. These mechanisms operate without need for any catalyst. Four different amine curing agents employed to achieve glass transition temperatures around 100 °C excellent thermal stability. Through dynamic-mechanical analyses, thermomechanical properties vitrimeric characteristics investigated, revealing remarkably fast stress at relatively low significant creep below temperature. Leveraging dual mechanism, chemical degradability these has explored through accessible methodologies, material's reformation after degradation demonstrated in both cases. Furthermore, material mechanically recycled, maintaining almost same properties. Finally, materials used fabricate recycle carbon-fiber-reinforced composite reversible adhesives, showcasing their promising potential applications.

Язык: Английский

Процитировано

21
Nano-Level Additive Manufacturing: Condensed Review of Processes, Materials, and Industrial Applications DOI Creative Commons
Ismail Fidan,

Mohammad Alshaikh Ali,

Vivekanand Naikwadi

и другие.

Technologies, Год журнала: 2024, Номер 12(7), С. 117 - 117

Опубликована: Июль 18, 2024

Additive manufacturing, commonly known as 3D printing, represents the forefront of modern manufacturing technology. Its growing popularity spans across research and development, material science, design, processes, everyday applications. This review paper presents a crucial nano-level examining it from perspectives materials, industrial applications, future trends. The authors have synthesized latest insights wide range archival articles source books, highlighting key findings. primary contribution this study is condensed report that consolidates newest on offering broad overview innovative technology for researchers, inventors, educators, technologists. It anticipated will significantly advance in nanotechnology, additive related technological fields.

Язык: Английский

Процитировано

3
Controlled orthogonal reactions in neat polymerizations DOI
Caleb J. Reese, Grant M. Musgrave, Chen Wang

и другие.

Polymer Chemistry, Год журнала: 2024, Номер 15(39), С. 3954 - 3966

Опубликована: Янв. 1, 2024

In this Minireview, we discuss recent implementations of orthogonal neat polymerization reactions for emerging applications including 3D printing, multimaterials, optical materials, and photo-responsive materials.

Язык: Английский

Процитировано

2
Epoxy curing in mild and eco-friendly conditions: towards bisphenol A-free systems DOI Creative Commons

Valentine Lavaux,

Jacques Lalevée

Progress in Polymer Science, Год журнала: 2024, Номер 157, С. 101873 - 101873

Опубликована: Авг. 24, 2024

Язык: Английский

Процитировано

2
Preparation of eugenol-based flame retardant epoxy resin with an ultrahigh glass transition temperature via a dual-curing mechanism DOI

Kangle Xue,

Pengbo Zhang,

Zidie Song

и другие.

Polymer Degradation and Stability, Год журнала: 2024, Номер 231, С. 111092 - 111092

Опубликована: Ноя. 17, 2024

Язык: Английский

Процитировано

2
Reprocessable, recyclable and shape programmable epoxy vitrimers DOI Creative Commons

Hongxin Yao,

Hongjun Yang, Li Jiang

и другие.

RSC Applied Polymers, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Epoxy vitrimers are versatile thermoset polymers with good mechanical and reprocessable properties.

Язык: Английский

Процитировано

1
Enabling the Reprocessability and Debonding of Epoxy Thermosets Using Dynamic Poly(β‐Amino Amide) Curing Agents DOI Open Access
Loc Tan Nguyen, Stephan Maes, Filip Du Prez

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 30, 2024

Abstract Epoxy resins, by showing outstanding performances, stand out as the most applied materials in thermoset products. However, their excellent properties, associated with covalently cross‐linked structures, come at expense of recyclability, thus posing environmental and regulatory challenges. Herein, starting from recently explored reversibility robust poly(β‐amino amide)s, dynamic curing agents are synthesized a one‐pot procedure for use preparation epoxy‐derived networks. The obtained retain desirable properties while being fully (re)processable, high temperature‐dependent viscoelasticity (activation energy (E ) ≈230 to 270 kJ mol −1 ). Moreover, this new generation epoxy shows resistance hydrolysis creep elevated temperatures (up 120 °C). As an entry point further applications, reversible implemented adhesive formulations, showcasing lap shear strengths that comparable commercial hardeners 9 MPa). β‐amino amide groups provide adhesives additional functionality heat‐triggered deconstruction (130 150 °C), re‐bonding capacity up 80% recovery lap‐shear strength. To encourage industrial adoption, cost‐effective, drop‐in synthesis protocol is developed using only bulk chemicals, hence facilitating practical implementation.

Язык: Английский

Процитировано

1
Influence of the Magnetization of Thermally Expandable Particles on the Thermal and Debonding Properties of Bonding Joints DOI Creative Commons
J. Abenójar, Sara López de Armentia, Juan Carlos del Real Romero

и другие.

Inorganics, Год журнала: 2024, Номер 12(5), С. 129 - 129

Опубликована: Апрель 28, 2024

This study addresses the challenge of recycling adhesive bonds, as their disassembly is irreversible and damages substrates. It explores use thermally expandable particles (TEPs), which, when heated, expand weaken bond. The magnetization TEPs allows us to control distribution using a magnetic field. work aims obtain magnetized TEPs, influence on resin curing, mechanical performance, durability, test mobility in graded analyze temperature-induced debonding process. are characterized various techniques, including differential scanning calorimetry, nuclear resonance, electron microscopy. Additionally, impact 25 wt.% epoxy curing examined Kamal model. Adhesion assessments were conducted through tensile shear tests single-lap-joint specimens, while bond durability was determined via wedge testing. found that reduces time, though it decreases strength increasing durability. crack formation energy higher with total length lower long-term tests. Once debonded, substrates sanded reused raw material.

Язык: Английский

Процитировано

0