研究目的
Investigating the use of photoacidic catalysis to enhance the kinetics and properties of epoxy?amine polyaddition reactions under visible light irradiation.
研究成果
The study demonstrates that photoacidic catalysis significantly enhances the kinetics and properties of epoxy?amine polyaddition reactions under visible light irradiation. This approach enables rapid production of polymer networks with improved mechanical properties and versatility in applications ranging from thin films to thick composites.
研究不足
The study focuses on specific epoxy and amine components under controlled conditions. The scalability and applicability to other epoxy?amine systems or industrial processes require further investigation.
1:Experimental Design and Method Selection:
The study employs photoacidic catalysis to enhance epoxy?amine polyaddition reactions. The methodology includes the use of a photosensitizer/iodonium salt system under visible light irradiation (405 nm).
2:Sample Selection and Data Sources:
High purity reactants were used, including bisphenol A diglycidyl ether (BisA), bisphenol F diglycidyl ether (BisF), trimethylolpropane triglycidyl ether (tpte), and m-xylylenediamine (mxda).
3:List of Experimental Equipment and Materials:
Real-time Fourier transformed infrared spectrometer (RT-FTIR), LED@405 nm (Thorlabs), laser diode LD@405 nm (CNI lasers), dynamic mechanical analyzer (METTLER TOLEDO DMA 861), and infrared thermal imaging camera (Fluke TiX500).
4:0). Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Epoxy and amine components were mixed and irradiated under controlled conditions. The reaction kinetics and material properties were monitored using RT-FTIR and DMA.
5:Data Analysis Methods:
The evolution of reactive functions was monitored using RT-FTIR. The mechanical properties were analyzed using DMA.
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Laser Diode
MDL-III-405
CNI lasers
Used for photopolyaddition under higher intensity.
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Infrared Thermal Imaging Camera
TiX500
Fluke
Monitoring the photopolyaddition of the samples.
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Real-time Fourier transformed infrared spectrometer
Jasco 6600
Jasco
Monitoring the reactive function conversion versus time for polyaddition.
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LED
Solis 405C
Thorlabs
Used for photopolymerization experiments.
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Dynamic Mechanical Analyzer
DMA 861
METTLER TOLEDO
Performing DMA measurements with shearing mode.
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