Table 1.
Thermogravimetric and differential thermogravimetric (TGA/DTG) results for PA66/tungstate/PolyBrFR formulations in air.
| Sample | PA66 | Br(BrPS) | Br(BrPBz) | MC* | TGA/DTG (Air) | |||
|---|---|---|---|---|---|---|---|---|
| Concentration, wt.% | T5% | Tmax, °C | R500, wt.% * | R580, wt.% | ||||
| PA66 | 100.0 | 386 | 461 | 11.2 | 3.9 | |||
| BrPS | 90.0 | 10.0 | 400 | 430 | 8.1 | 0.5 | ||
| BrPBz | 90.0 | 10.0 | 363 | 402 | 10.6 | 1.2 | ||
| AlW-BrPS | 85.0 | 10.0 | 5.0 | 374 | 423 | 15.9 (10.9) | 4.4 | |
| ZnW-BrPS | 85.0 | 10.0 | 5.0 | 375 | 431 | 20.4 (15.4) | 9.6 | |
| SnW-BrPS | 85.0 | 10.0 | 5.0 | 368 | 424 | 20.9 (15.9) | 10.3 | |
| AlW-BrPBz | 85.0 | 10.0 | 5.0 | 367 | 405 | 15.1 (10.1) | 4.6 | |
| ZnW-BrPBz | 85.0 | 10.0 | 5.0 | 358 | 404 | 26.2 (21.2) | 20.8 | |
| SnW-BrPBz | 85.0 | 10.0 | 5.0 | 357 | 410 | 20.5 (15.5) | 9.2 | |
Key: BrPS = brominated polystyrene; BrPBz = poly(pentabromobenzyl acrylate); MC* indicates each tungstate; T5% is the temperature to 5% mass loss, Tmax is the DTG peak rate of mass loss, and R500 and R580 are the residues levels at those temperatures respectively (in °C); * bracketed values = (R500 − 5)%.