Hot‐Lithography SLA‐3D Printing of Epoxy Resin

Dall'Argine, Corrado; Hochwallner, Alexander; Klikovits, Nicolas; Liska, Robert; Stampf, Jürgen; Sangermano, Marco

doi:10.1002/mame.202000325

Cited by 48 publications

(37 citation statements)

References 17 publications

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“…By results, increasing the temperature from 40 to 80°C leads to the increasing the polymerization during the post‐curing, which can be attributed to the increasing the mobility of the polymer chain by increasing the temperature. Thus, increasing the temperature leads to the increasing in the chain mobility, and by increasing the polymer network mobility, chain transfer reaction will be increases 40,41 …”

Section: Resultsmentioning

confidence: 99%

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Stereolithography of (meth)acrylate‐based photocurable resin: Thermal and mechanical properties

Zirak

Shirinbayan

Benfriha

et al. 2022

J of Applied Polymer Sci

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Additive manufacturing (AM) has attracted a lot of attention in the industry and studies due to the ability to fabricate parts in different sizes and shapes along with economic costs. Among the different three-dimensional (3D) printing methods, stereolithography (SLA) is becoming an important method. The objective of this work is to investigate the effect of different sub-build orientations of an acrylate-based 3D printing SLA rapid-prototyping photosensitive resin concerning UV and thermal post-curing on the thermal and mechanical properties. Key role of polymerization as a determining factor in the final mechanical and thermal properties was shown. The results indicate turning the mechanical properties of cured resin by different sub-build orientations. Furthermore, post-curing process was performed in order to complete the curing of unreacted monomers. The results show the important effect of thermal post-curing on the mechanical properties. In addition, a polymerization up to 98% for thermal curing at 80 C was achieved. In addition, the maximum tensile strength for the maximum amount of polymerization was for sub-building orientation of 45 , 0 , and 90 .

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Section: Resultsmentioning

confidence: 99%

“…Thus, increasing the temperature leads to the increasing in the chain mobility, and by increasing the polymer network mobility, chain transfer reaction will be increases. 40,41…”

Section: Effect Of Post-curing On Polymerizationmentioning

confidence: 99%

Stereolithography of (meth)acrylate‐based photocurable resin: Thermal and mechanical properties

Zirak

Shirinbayan

Benfriha

et al. 2022

J of Applied Polymer Sci

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“…This unique method enables the additive manufacturing of previously unprintable materials at exceptional resolution (< 20 μm). [17][18][19][20][21] Herein we report the tailored photo-chemically induced polycondensation of a phenolic resin (novolak) for additive manufacturing. The use of PAG-curable novolak resin for Hot Lithography offers the necessary preconditions to print structures from novolaks without an additional polymer serving as matrix.…”

Section: Introductionmentioning

confidence: 99%

Photo-chemically induced polycondensation of a pure phenolic resin for additive manufacturing

et al. 2022

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“…Various publications have already shown the benefits of the increased printing temperature. [36][37][38][39] The 3D printing of polyesters is usually performed by preparing a polyester and modifying it with appropriate end-groups for radical polymerization. Another possibility is to deploy the polymer as a filament in the fused-deposition modeling process.…”

Section: Introductionmentioning

confidence: 99%

A systematic study of temperature‐dependent cationic photopolymerization of cyclic esters

Mete

Knaack

Liska

2021

Polymer International

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The polymerization of cyclic esters to form polyesters is a thoroughly investigated topic and can be performed via anionic, cationic or metal‐mediated techniques. While there have been attempts to apply light‐induced on‐demand initiation techniques, in most investigations photobase generators are used. In this work the focus lies on photoacid generators, which – contrary to many photobase generators – are easily stored, thermally stable, reactive, less sensitive towards water and oxygen inhibition and commercially available in various forms. However, in most cases the low reactivity of the monomers requires long polymerization times. Therefore, this study provides a basic study of the temperature‐dependent cationic photopolymerization of cyclic esters and shows that polyesters can be formed in less than 5 min of irradiation at elevated temperatures and without solvents, leading to highly crystalline products. In addition, the temperature‐dependent crystallinity, molecular weights and dispersities of the polymers are investigated and presented. © 2021 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Industrial Chemistry.

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Hot‐Lithography SLA‐3D Printing of Epoxy Resin

Cited by 48 publications

References 17 publications

Stereolithography of (meth)acrylate‐based photocurable resin: Thermal and mechanical properties

Stereolithography of (meth)acrylate‐based photocurable resin: Thermal and mechanical properties

Photo-chemically induced polycondensation of a pure phenolic resin for additive manufacturing

A systematic study of temperature‐dependent cationic photopolymerization of cyclic esters

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