Thermal and thermo-oxidative decomposition and decomposition kinetics of flame retardant high impact polystyrene (HIPS) with triphenyl phosphate (TPP) and novolac type epoxy resin (NE) were characterized using thermo-gravimetric experiment. And the flammability was determined by limited oxygen indices (LOI). The LOI results show that TPP and NE had a good synthetic effect on the flame retardancy of HIPS. Compared with pure HIPS, the LOI values of HIPS/NE and HIPS/TPP only increased by about 5%, and the LOI value of HIPS/TPP/NE reached 42.3%, nearly 23% above that of HIPS. All materials showed one main decomposition.step, as radical H1PS scission predominated during anaerobic decomposition. TPP increased the activity energy effectively while NE affected the thermal-oxidative degradation more with the help of the char formation. With both TPP and NE, the materials could have a comparable good result of both thermal and thermal-oxidative degradation, which could contribute to their effect on the flame retardancy.
参考文献
| [1] | Carty P;White S .Flammability of Polymer Blends[J].Polymer Degradation and Stability,1996,54:379-392. |
| [2] | Smith R;Georlette P;Finberg I et al.Development of Environmentally Friendly Multifunctional Flame Retardants for Commodity and Engineering Plastics[J].Polymer Degradation and Stability,1996,54:167-180. |
| [3] | Anderson C E;Ketchum D E;Mountain WP .1,2-methy1-1,2-oxaphospholan-5-one 2-oxide Fire Retardance in HIPS:The Effect of Melamine and Novolac[J].Fire Science,1998,6:390-398. |
| [4] | Grand AF;Wilkie CA.Fire Retardancy of Polymeric Materials[M].New York:Narcel Dekker,Inc,2000:140-147. |
| [5] | Lee K.;Kim J.;Bae J.;Yang JH.;Hong SY.;Kim HK. .Studies on the thermal stabilization enhancement of ABS; synergistic effect by triphenyl phosphate and epoxy resin mixtures[J].Polymer: The International Journal for the Science and Technology of Polymers,2002(8):2249-2253. |
| [6] | Costa L.;Camino G.;Weil ED.;Pearce EM.;Di Montelera LR. .Flame-retardant properties of phenol-formaldehyde-type resins and triphenyl phosphate in styrene-acrylonitrile copolymers[J].Journal of Applied Polymer Science,1998(7):1067-1076. |
| [7] | Costa L;Rossi di Montelera L;Camino G et al.Structure-charting Relationship in Phenol-formaldehyde Type Resin[J].Journal of Applied Polymer Science,1997,56:23-35. |
| [8] | Morterra C;Low M J D .IR Studies of Carbon Ⅶ.The Pyrolysis of a Phenol-formaldehyde Resin[J].Carbon,1985,23:525-533. |
| [9] | William M Jackson;Robert T Conely .High Temperature Oxidative Degradation of Phenol-formaldehyde Polycondensates[J].Journal of Applied Polymer Science,1964,8:2163-2193. |
| [10] | Fyfe C A;Mckinnon M S;Rudin A et al.Investigation of the Mechanism of the Thermal Decomposition of Cured Phenolic Resins by High-resolution 13C CP/MAS Solid-state NMR Spectroscopy[J].Macromolecules,1983,16:1216-1221. |
| [11] | Chetan M S;Ghadago R S;Rajan C R et al.Thermolysis of Orthonovolaks.II.Phenol-formaldehyde and-naphthol-Formaldehyde Resins[J].Journal of Applied Polymer Science,1993,50:685-696. |
| [12] | Boscoletto A B;Checchin M;Tavan M et al.Combustion and Fire Retardance of Poly (2,6-dimethyl-1,4-phenylene ether)-high-impact Polystyrene Blends.Ⅰ.Morphological aspects[J].Journal of Applied Polymer Science,1994,53:121-129. |
| [13] | 李慧勇,蔡长庚,贾德民.磷酸酯和环氧树脂在阻燃HIPS中的协同作用[J].塑料工业,2005(10):53-55,59. |
| [14] | Brauman S K;Chen I J;Matzinger D P .Polystyrene Degradation During Combustion[J].Journal of Polymer Science Part A:Polymer Chemistry,1983,21:1831-1845. |
| [15] | Martel B .Charring Processes in Thermoplastic Polymers:Effect of Condensed Phase Oxidation on the Formation of Chars in Pure Polymers[J].Journal of Applied Polymer Science,1988,35:1212-1226. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%