Table 4.
Polyurethane raw materials denotation (after final arrangement)
| Category of the independent variable | Type of substrate | The substrate attributed to independent variable | The value of the independent variable in this category |
|---|---|---|---|
| I | Diisocyanate | MDI | 1 |
| TDI | 2 | ||
| HDI | 3 | ||
| IPDI | 4 | ||
| J | Polyol | POG 2000 | 1 |
| POG 600 | 2 | ||
| PEA 1000 | 3 | ||
| PCL 2000 | 4 | ||
| PCL 530 | 5 | ||
| PTMO 1000 | 6 | ||
| K | Chain extender | TFBD | 1 |
| N-BDA | 2 | ||
| N-PhDA | 3 | ||
| N-MDA | 4 | ||
| HD | 5 | ||
| BD | 6 | ||
| N-tert-BDA | 7 |
MDI diphenylmethane diisocyanate, TDI toluene diisocyanate, HDI hexamethylene diisocyanate, IPDI isophorone diisocyanate, POG polyoxyethylated polyols, PEA poly(ethylene adipate), PCL polycaprolactone, N-MDA N-methyldiethanolamine, N-BDA N-butyldiethanolamine, N-PhDA N-phenyl-diethanolamine, BD 1,4-butanediol, HD 1,6-hexanediol, TFBD 2,2,3,3-tetrafluoro-1,4-butanediol, N-tert-butyldiethanolamine (N-tert-BDA)