ACP16
Material description
Material ID: ACP16
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 (26%)
Additives (fire retardants, fillers or traces of inorganic elements): Magnesium Hydroxide (67%), Calcium Carbonate (6%), Silicon (1%), Aluminium (1%), traces of other elements (<1%)
Table 1. Estimated mass concentration of compounds.
| Compound | Mass Concentration (%) |
|---|---|
| Polyethylene modified with vinyl acetate (PE-VA) | 26 |
| Magnesium Hydroxide (Mg(OH)2) | 67 |
| Calcium Carbonate (CaCO3) | 6 |
| Silicon (Si) | 1 |
| Aluminium (Al) | 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 | 23 |
| Ca | 4 |
| Si | 1 |
| Al | 1 |
| Fe | 1 |
| Mn | <1 |
| K | <1 |
| K | - |
| P | - |
| Cr | - |
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) | 0.46 |
| Oxidative (air) | 0.46 |
Table 4. Temperature and amplitude of main peaks in non-oxidative conditions.
| Peak ID | Temperature peak (°C) | Amplitude of peak (°C-1) |
|---|---|---|
| Peak 1 | 421 | 2.04 x 10-3 |
| Peak 2 | 486 | 1.028 x 10-2 |
| Peak 3 | 679 | 2.4 x 10-4 |
Table 5. Temperature and amplitude of main peaks in oxidative conditions.
| Peak ID | Temperature peak (°C) | Amplitude of peak (°C-1) |
|---|---|---|
| Peak 1 | 408 | 3.37 x 10-3 |
| Peak 2 | 469 | 1.666 x 10-2 |
| Peak 3 | 675 | 3.4 x 10-4 |
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 .
Additional information:
Update 2020/09/08: An error with the TGA upload files was rectified.