Light-Associated Reactions of Synthetic Polymers

Ravve, A.

doi:10.1007/0-387-36414-5

Cited by 5 publications

(1 citation statement)

References 23 publications

(45 reference statements)

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“…The essential monomers for photopolymers are acrylates, which combine high reactivity, rapid cure rates, and high versatility with the monomer functionality. [2] Owing to these potentials, there is great interest in the utilization of acrylate-based photopolymers within a broad range of AM technologies. This not only includes state-of-the-art AM but also experimental technologies and concepts with increased functionalities and elevated processrelated requirements.…”

Section: Motivationmentioning

confidence: 99%

Thermal stability and curing behavior of acrylate photopolymers for additive manufacturing

Setter

Schmölzer²,

Rudolph³

et al. 2023

Polymer Engineering & Sci

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Next-generation additive manufacturing processes based on UV-curing acrylate photopolymers extend the barriers of functional part production by deploying rapid processing speeds, complex geometries with high resolutions, and an extended material spectrum. Many technologies introduce temperature-dependent curing and decomposition behavior of acrylates to the list of process-related challenges. This investigation targets a comprehensive analysis of the curing behavior and thermal stability of acrylic photopolymers by implementing analyzing techniques like thermogravimetric analysis, Fourier-transform infrared spectroscopy, and differential scanning calorimetry. Significant parameters such as the UV intensity and the isothermal temperature are varied based on the design of experiments. Characteristic evolving gases at elevated temperatures are identified and discussed towards their relevance for the curing process. The calorimetric results demonstrate increasing reaction speeds with elevated UV intensities as well as a restricted accelerating effect of increasing temperatures. The reaction enthalpy proves to be strongly dependent on the chosen temperature. The results represent the base for the comparison of different kinetic curing models in future investigations.

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Section: Motivationmentioning

confidence: 99%