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Thermoanalytische Charakterisierung Strahlengehärteter Polymerfilme

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Abstract

Thermo-oxidative and thermo-mechanical stabilities of radiation-cured acrylates and epoxides were examined by TG, DMA and DSC.

The polymeric trifunctional acrylates PETIA, TMPTA and THEIC displayed the highest temperatures of onset of degradation. The high crosslinking density of the films resulted in an almost temperature-independent complex E-modulus, as measured by DMA. With increasing degree of ethoxylation or propoxylation of the monomers, decreases in thermal stability and strength were found. For difunctional polymeric acrylates and epoxides, the glass transition temperature was measured.

The average degree of curing of UV-cured epoxy films can be determined from the temperature of the maximum in the loss modulus (Emax.

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Hösselbarth, B., Friese, K. & Geyer, W. Thermoanalytische Charakterisierung Strahlengehärteter Polymerfilme. Journal of Thermal Analysis and Calorimetry 52, 145–155 (1998). https://doi.org/10.1023/A:1010122525663

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  • DOI: https://doi.org/10.1023/A:1010122525663

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