Enhanced dual photo/thermal initiating systems for preparation of few layer graphene filler-based composites and 3D printing

Lalevée, Jacques; Ma, Qiang; Schmitt, Michael; Zhang, Yijun; Schrodj, Gautier; Vidal, Loı̈c; Collange, Elea; Bégin, Dominique

doi:10.1039/d2qm00644h

Cited by 6 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This study utilized a molecular design approach to synthesize a UV-thermal dual-curing blocking organosilicon polyurethane acrylate material. − The sealing agent selected was t-BAEMA, a specific compound that incorporated photosensitive groups into the molecular chain of the organosilicon polyurethane for rapid curing and molding via UV-curing. Additionally, the t-BAEMA sealer interacted with the −NCO group in the organosilicon polyurethane to form a reversible, thermally unstable urea bond.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Silicon-Modified Polyurethane Acrylate for UV-Thermal Dual Curing in Three Dimensional Printing

Wu,

Ding,

Yuan

et al. 2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Single UV-curing silicone-modified polyurethane acrylate materials have limitations, such as low molecular polymerization and weak mechanical properties compared to thermal-curing materials. This experiment synthesized a polyurethane prepolymer coated with isocyanate groups using hydroxyl polyether silicone oil (PDMS) and diisocyanate. tert-Butylaminoethyl methacrylate (t-BAEMA) was then utilized to create a silicon-modified polyurethane acrylate (SiBPUA) prepolymer with heat-unstable urea and photosensitive groups. This prepolymer was incorporated into photosensitive resin materials and processed through 3D DLP 3D printing. Upon heating, the −NCO group regenerated, and the chain extender underwent a secondary curing reaction, increasing molecular weight and improving performance. The study investigated the impact of different reactants on SiBPUA properties, deblocking temperature, optimal curing temperature, and enhancement of UV-curing materials through thermal curing. The results revealed that the use of isophorone diisocyanate (IPDI), 4,4′-diaminodicyclohexylmethane (PACM), and methyl methacrylate (MMA) resulted in the best mechanical properties. Furthermore, UV-thermal dual curing significantly enhanced tensile strength (12.5 MPa) and elongation at break (219.5%), broadening the application potential of UV-curing 3D printing materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Silicon-Modified Polyurethane Acrylate for UV-Thermal Dual Curing in Three Dimensional Printing

Wu,

Ding,

Yuan

et al. 2024

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…This strategy exploits the association of an electron acceptor substrate and an electron donor molecule to bring about the formation of a new molecular aggregation in the ground state, called charge transfer complexes (CTCs, or electron donor−acceptor (EDA) complexes) 33 . This kind of strategy is also extended to the synthesis of polymers (and polymer composite) 34–39 . By utilizing the combination of alkyl iodide and organic amines or tertiary anilines, Goto and coworkers conduct a iodine mediated polymerization (reversible complexation‐mediated polymerization [RCMP]) over a wide range of irradiation wavelengths (350–750 nm) 40,41 .…”

Section: Introductionmentioning

confidence: 99%

“…33 This kind of strategy is also extended to the synthesis of polymers (and polymer composite). [34][35][36][37][38][39] By utilizing the combination of alkyl iodide and organic amines or tertiary anilines, Goto and coworkers conduct a iodine mediated polymerization (reversible complexation-mediated polymerization [RCMP]) over a wide range of irradiation wavelengths (350-750 nm). 40,41 Besides, CTC is more frequently used in photoinitiation (or dual photo/thermal initiation) and photocuring fields.…”

Section: Introductionmentioning

confidence: 99%

Dual photo/thermal initiation with charge transfer complexes based on bromide‐based electron acceptors

Zhang

Liu

et al. 2023

Journal of Polymer Science

Self Cite

View full text Add to dashboard Cite

Different combinations of donors and acceptors of charge transfer complexes (CTCs) can realize visible light catalysis in multiple wavelength bands. Here, we successfully demonstrated that 2‐bromoacetophenone as an electron acceptor, combined with amines (for formation of CTC), can achieve photopolymerization under LED@405 nm visible light irradiation, initiating the polymerization of (meth)acrylates, and the induction time can be completely eliminated by condition optimization. The CTC was also shown to have dual photo/thermal initiation capability and was eventually applied to 3D printing as well.

show abstract

Dual-curing polymer systems for photo-curing 3D printing

Gao,

Guo,

Cui

et al. 2024

Additive Manufacturing

View full text Add to dashboard Cite

Enhanced dual photo/thermal initiating systems for preparation of few layer graphene filler-based composites and 3D printing

Abstract: The photopolymerization synergistic thermal polymerization process has been successfully applied in the preparation of very opaque composites. In this work, the fabrication of opaque few layer graphene (FLG) composites was...

Cited by 6 publications

References 51 publications

Synthesis and Characterization of Silicon-Modified Polyurethane Acrylate for UV-Thermal Dual Curing in Three Dimensional Printing

Synthesis and Characterization of Silicon-Modified Polyurethane Acrylate for UV-Thermal Dual Curing in Three Dimensional Printing

Dual photo/thermal initiation with charge transfer complexes based on bromide‐based electron acceptors

Dual-curing polymer systems for photo-curing 3D printing

Contact Info

Product

Resources

About