ACP18
Material description
Material ID: ACP18
Material type: Aluminium composite panel with a core consisting of polyethylene modified with vinyl acetate (PE-VA) and a fire retardant.
Polymer: Polyethylene modified with vinyl acetate (36%)
Additives (fire retardants, fillers or traces of inorganic elements): Magnesium Hydroxide (60%), Calcium Carbonate (2%), Silicon (1%), Sodium (1%), traces of other elements (<1%)
Table 1. Estimated mass concentration of compounds.
| Compound | Mass Concentration (%) |
|---|---|
| Polyethylene modified with vinyl acetate (PE-VA) | 36 |
| Magnesium Hydroxide (Mg(OH)2) | 60 |
| Calcium Carbonate (CaCO3) | 2 |
| Silicon (Si) | 1 |
| Sodium (Na) | 1 |
| Traces of titanium (Ti) | <1 |
| Traces of iron (Fe) | <1 |
| Traces of potassium (K) | <1 |
Figure 1 . FTIR spectra: Absorbance percentage versus wavenumber from the sample.
Figure 2. FTIR spectra: Absorbance percentage versus wavenumber from the sample and the identified compounds.
A.2 Energy Dispersive X-Ray Fluorescence (EDXRF)
Table 2. Inorganic elements and their mass concentration identified with EDXRF.
| Element | Mass Concentration (%) |
|---|---|
| Mg | 20 |
| Ca | 2 |
| Si | 2 |
| Ti | 1 |
| Na | 1 |
| Fe | <1 |
| K | <1 |
| Al | <1 |
Figure 3. EDXRF spectra. Counts vs energy. Identified elements are shown as vertical lines.
B. Thermogravimetric analysis
Table 3. Mass fraction of residue after thermal decomposition.
| Condition | Fraction of mass residue at 800°C |
|---|---|
| Non-oxidative (nitrogen) | 0.39 |
| Oxidative (air) | 0.38 |
Table 4. Temperature and amplitude of main peaks in non-oxidative conditions.
| Peak ID | Temperature peak (°C) | Amplitude of peak (°C-1) |
|---|---|---|
| Peak 1 | 390 | 2.06 x 10-3 |
| Peak 2 | 482 | 1.612 x 10-2 |
Table 5. Temperature and amplitude of main peaks in oxidative conditions.
| Peak ID | Temperature peak (°C) | Amplitude of peak (°C-1) |
|---|---|---|
| Peak 1 | 407 | 2.31 x 10-3 |
| Peak 2 | 474 | 1.396 x 10-2 |
Figure 4. Normalised mass (solid line) and derivative of the normalised mass (dashed line) in 150 ml min-1 of nitrogen and a heating rate of 20°C min-1.
Figure 5. Normalised mass (solid line) and derivative of the normalised mass (dashed line) in 150 ml min-1 of air and a heating rate of 20°C min-1 .