Research Article
Enhanced Thermal Insulation and Flame-Retardant Properties of Polyvinyl Alcohol-Based Aerogels Composited with Ammonium Polyphosphate and Chitosan
Table 3
UL-94 test results of the PVA composite aerogels.
| | Sample ID | Composites | UL-94 test (3.2 mm) | | (s) | (s) | Dripping | Ignite cotton | Rating |
| | 1 | PVA/H3BO3 | 35 | 4 | Yes | Yes | NR | | 2 | PVA/5APP-CS/H3BO3 | 5 | 17 | No | Yes | V-1 | | 3 | PVA/10APP-CS/H3BO3 | 3 | 1 | No | No | V-0 | | 4 | PVA/15APP-CS/H3BO3 | 2 | 1 | No | No | V-0 |
|
|
