Abstract
In order to investigate the properties of soft-feel coating paints for automotive interior plastics, the characteristics of coating systems were systematically determined by changing the main resin composition, isocyanate type cross-linker ratio, and curing temperature conditions. During the thermal curing process, the change in cross-linked network structure of coating systems was analyzed from the rheological properties using a rotational rheometer and curing behaviors of thin coating films were scrutinized by a rigid-body pendulum tester. After finalizing the curing process, the change in the amount of functional groups, according to the ratio (NCO/OH ratio) between main resin and crosslinker, was checked by Fourier transform infrared spectroscopy (FTIR). Also, thermal and mechanical properties of cured films were measured via dynamic mechanical analysis and nano-indentation test. Through these analyses, the relationship between curing characteristics of soft-feel paints during the curing process and various properties of final cured coating films was elucidated.
| Original language | English |
|---|---|
| Pages (from-to) | 303-310 |
| Number of pages | 8 |
| Journal | Polymer (Korea) |
| Volume | 42 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2018 Mar |
Keywords
- Crosslinker ratio
- Nano-indentation test
- Real-time rheological properties
- Soft-feel coatings
- Thermal curing
ASJC Scopus subject areas
- Chemical Engineering(all)
- Polymers and Plastics
- Materials Chemistry