TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Vogelwaid, Julian
A1  - Bayer, Martin
A1  - Walz, Michael
A1  - Kutuzova, Larysa
A1  - Kandelbauer, Andreas
A1  - Jacob, Timo
T1  - Process optimization of the morphological properties of epoxy resin molding compounds using response surface design
JF  - Polymers
N2  - An epoxy compound’s polymer structure can be characterized by the glass transition temperature (Tg) which is often seen as the primary morphological characteristic. Determining the Tg after manufacturing thermoset-molded parts is an important objective in material characterization. To characterize quantitatively the dependence of Tg on the degree of cure, the DiBenedetto equation is usually used. Monitoring polymer network formation during molding processes is therefore one of the most challenging tasks in polymer processing and can be achieved using dielectric analysis (DEA). In this study, the morphological properties of an epoxy resin-based molding compounds (EMC) were optimized for the molding process using response surface analysis. Processing parameters such as curing temperature, curing time, and injection rate were investigated according to a DoE strategy and analyzed as the main factors affecting Tg as well as the degree of cure. A new method to measure the Tg at a certain degree of cure was developed based on warpage analysis. The degree of cure was determined inline via dielectric analysis (DEA) and offline using differential scanning calorimetry (DSC). The results were used as the response in the DoE models. The use of the DiBenedetto equation to refine the response characteristics for a wide range of process parameters has significantly improved the quality of response surface models based on the DoE approach.
KW  - dielectric analysis (DEA)
KW  - glass transition temperature (Tg)
KW  - design of experiment (DoE)
KW  - response surface
KW  - DiBenedetto equation
KW  - epoxy molding compound (EMC)
KW  - cure monitoring
Y1  - 2024
UN  - https://nbn-resolving.org/urn:nbn:de:bsz:rt2-opus4-51197
SN  - 2073-4360
SS  - 2073-4360
U6  - https://doi.org/10.3390/polym16081102
DO  - https://doi.org/10.3390/polym16081102
VL  - 16
IS  - 8
SP  - 26
S1  - 26
PB  - MDPI
CY  - Basel
ER  -