Spectroscopy and Spectral Analysis, Volume. 41, Issue 12, 3901(2021)
Flame Retardant Mechanism Investigation of Thermoplastic Polyurethane Composite/Ammonium Polyphosphate/Aluminum Hydroxide Composites Based on Spectroscopy Analysis
Figures & Tables(13)
Fig. 1. SEM images of char residues for TPU and FR-TPU composites
(a): TPU; (b): TPU/APP20;(c): TPU/ATH20; (d): TPU/APP10/ATH10
Fig. 2. FTIR spectra of char residues for TPU and FR-TPU composites
Fig. 3. XPS spectra of char residues for TPU and FR-TPU composites
Fig. 4. C(1
(a): TPU; (b): TPU/APP20; (c): TPU/ATH20; (d): TPU/APP10/ATH10
Fig. 5. O(1
(a): TPU; (b): TPU/APP20; (c): TPU/ATH20; (d): TPU/APP10/ATH10
Fig. 6. N(1
(a): TPU; (b): TPU/APP20; (c): TPU/ATH20; (d): TPU/APP10/ATH10
Fig. 7. Raman spectra of char residue for TPU and FR-TPU composites
(a): TPU; (b): TPU/APP20; (c): TPU/ATH20; (d): TPU/APP10/ATH10
Fig. 8. Schematic illustration for the flame retasdancy mechanism of TPU/APP/ATH composites
Table 1. Composition and flame retardant test results of TPU and FR-TPU composites
View tableView in ArticleTable 1. Composition and flame retardant test results of TPU and FR-TPU composites
样品 Mass Fraction/Wt% LOI/Vol% UL-94 3.2 mm bar TPU APP ATH t1/t2 Dripping Rating TPU 100 0 0 22.5 >30 s Y NR TPU/APP20 80 20 0 31.0 0.85/0.97 N V-0 TPU/APP15/ATH5 80 15 5 31.0 0.81/0.92 N V-0 TPU/APP10/ATH10 80 10 10 31.5 0.98/0.66 N V-0 TPU/APP5/ATH15 80 5 15 30.0 0.94/1.11 N V-0 TPU/ATH20 80 0 20 24.0 9.74/2.45 Y V-1
Table 2. Aromatic content of C, O and N in char residue of TPU and FR-TPU composites
View tableView in ArticleTable 2. Aromatic content of C, O and N in char residue of TPU and FR-TPU composites
样品 C
(At%)O
(At%)N
(At%)P
(At%)Al
(At%)TPU 88.2 8.07 3.73 - - TPU/APP20 45.08 41.5 1.68 11.74 - TPU/ATH20 54.21 27.09 2.34 - 16.36 TPU/APP10/ATH10 69.24 17.78 5.76 3.91 3.31
Table 3. Bonding state data of C in char residue of TPU and FR-TPU composites
View tableView in ArticleTable 3. Bonding state data of C in char residue of TPU and FR-TPU composites
样品 C—C/C—H
284.7 eV/%C—O/C—N
285.7 eV/%C—O/C—N
287.4 eV/%TPU 61.05 35.65 3.30 TPU/APP20 79.39 17.62 2.99 TPU/ATH20 49.81 35.28 14.91 TPU/APP10/ATH10 45.38 45.00 9.63
Table 4. Bonding state data of O in char residue of TPU and FR-TPU composites
View tableView in ArticleTable 4. Bonding state data of O in char residue of TPU and FR-TPU composites
样品 O2/H2O
533.2 eV
/%—O—
532.5 eV
/%—O
531.3 eV
/%TPU 28.75 44.36 26.89 TPU/APP20 41.17 28.87 29.96 TPU/ATH20 35.26 37.74 27.00 TPU/APP10/ATH10 44.33 32.78 22.89
Table 5. Bonding state data of N in char residue of TPU and FR-TPU composites
View tableView in ArticleTable 5. Bonding state data of N in char residue of TPU and FR-TPU composites
样品 —NH—
398.7 eV/%—N
400.4 eV/%TPU 40.93 59.07 TPU/APP20 27.51 72.49 TPU/ATH20 19.25 80.75 TPU/APP10/ATH10 47.17 52.83
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. Flame Retardant Mechanism Investigation of Thermoplastic Polyurethane Composite/Ammonium Polyphosphate/Aluminum Hydroxide Composites Based on Spectroscopy Analysis[J]. Spectroscopy and Spectral Analysis, 2021, 41(12): 3901
Paper Information
Category: Research Articles
Received: Nov. 2, 2020
Accepted: --
Published Online: Dec. 17, 2021
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