Intumescent coatings: A review on recent progress
Source abstract
Abstract
Fire is a serious threat to people and the structures they build. There is a continuous development of newer methods and materials to prevent its effects on them. Nowadays, a lot of attention is being paid in the design of public and commercial buildings by incorporating fire safety. Passive fireproofing of high-rise structures has become very important due to the use of steel in load bearing mode and has attracted increased attention after the collapse of the WTC towers. Conventional passive fireproofing materials include concrete covering, gypsum board and cementitious coatings which have a poor aesthetic. Intumescent fire-resistive coatings are a newer type of passive fireproofing coatings usually applied as thin film and they swell many times their original thickness forming an insulating char which acts as a barrier between the fire and the structural steel. It prevents the temperatures of the steel members from reaching a critical value and helps in maintaining the integrity of the structure in fire event. They are the preferred choice for passive fire protection of load bearing steel frame structures of architects and designers as they offer aesthetic appearance, flexibility, speed of application, and ease of inspection and maintenance. The present review covers recent developments in the field of intumescent coatings with a major emphasis on organic intumescent coatings. The role of various ingredients, their interactions in intumescent coatings, effects of various pigments, binders and additives are discussed briefly.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Flame retardant materials and properties · Polymer composites and self-healing · Fire dynamics and safety research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (100+)
Show source-provided references
1. Saxena, NK, Gupta, DR, “Development and Evaluation of Fire Retardant Coatings.” Fire Technol., 26 (4) 329–341 (1990)10.1007/BF01293077 ↗
2. Bourbigot, S, Duquesne, S, “Fire Retardant Polymers: Recent Developments and Opportunities.” J. Mater. Chem., 17 (22) 2283–2300 (2007)10.1039/b702511d ↗
3. Vandersall, H, “Intumescent Coating Systems, Their Development and Chemistry.” J. Fire Flammabil., 2 (2) 97–140 (1971)
4. Hao, J, Chow, WK, “A Brief Review of Intumescent Fire Retardant Coatings.” Arch. Sci. Rev., 46 (1) 89–95 (2003)10.1080/00038628.2003.9696967 ↗
5. Weil, ED, “Fire-Protective and Flame-Retardant Coatings—A State-of-the-Art Review.” J. Fire Sci., 29 (3) 259–296 (2011)10.1177/0734904110395469 ↗
6. Fire Protection of Structural Steel in High-Rise Buildings. www.fire.nist.gov/bfrlpubs/build04/PDF/b04047.pdf Accessed February 2016
7. Challener, C, “Fire Safety with Specialty Coatings.” JCT CoatingsTech., 4 (9) 78 (2007)
8. Mike Reed, GM, US Coatings, Intumescent Coating vs. Cementitious Coating. Coatings World (March 2015)
9. Horacek, H, Pieh, S, “The Importance of Intumescent Systems for Fire Protection of Plastic Materials.” Polym. Int., 49 (10) 1106–1114 (2000)10.1002/1097-0126(200010)49:10<1106::AID-PI539>3.0.CO;2-I ↗
10. Kirbyshire, A, Stewart, A, A Fire Protective Coating. WO2011151649 A1
11. Bulewicz, EM, Pelc, A, Kozlowski, R, Miciukiewicz, A, “Intumescent Silicate-Based Materials: Mechanism of Swelling in Contact with Fire.” Fire Mater., 9 (4) 171–175 (1985)10.1002/fam.810090405 ↗
12. Langille, KB, Nguyen, D, Bernt, JO, Veinot, DE, Murthy, MK, “Mechanism of Dehydration and Intumescence of Soluble Silicates.” J. Mater. Sci., 26 (3) 695–703 (1991)10.1007/BF00588306 ↗
13. Veinot, DE, Langille, KB, Nguyen, D, Bernt, JO, “Soluble Silicate-Based Coatings for Fire Protection.” Fire Technol., 25 (3) 230–240 (1989)10.1007/BF01039780 ↗
14. Dat T. Nguyen, DEV, James Foster, “Inorganic Intumescent Fire Protective Coatings.” US patent US4888057 A
15. Langille, KB, Nguyen, DT, Veinot, DE, Bernt, JO, “Intumescent powder.” US patent US 6645278 B2
16. Langille, KB, Nguyen, D, Bernt, JO, Veinot, DE, Murthy, MK, “Constitution and Properties of Phosphosilicate Coatings.” J. Mater. Sci., 28 (15) 4175–4182 (1993)10.1007/BF00351250 ↗
17. Kandare, E, Chukwudolue, C, Kandola, BK, “The Use of Fire-Retardant Intumescent Mats for Fire and Heat Protection of Glass Fibre-Reinforced Polyester Composites: Thermal Barrier Properties.” Fire Mater., 34 (1) 21–38 (2010)10.1002/fam.1000 ↗
18. Wainwright, R, Evans, KA, “Intumescent Compositions.” US Patent US5532292 A
19. Erismann, D, Vesley, G, “Aqueous Intumescent Fire Barrier Composition.” US Patent US20020171068 A1
20. Youngs, RW, “Intumescent Ceramic Fire Retardant Coating Containing Intumescent Ceramic Particles.” US Patent US7045080 B1
21. Batdorf, VH, “Inorganic Based Intumescent System.” US Patent US5786095 A
22. Kalbskopf, R and Trojer, F, “Method of Forming a Fire-Resistant Silicate Coating.” US Patent US4179535 A
23. Dimanshteyn, FA, “Intumescent Coatings, Alkali Metal Silicate, Gas Releasing Inorganic Particles.” US Patent US5035951
24. Craig Lipka, JP, Roger Youngs, “Intumescent Coating Composition and Process for Fire-Retardant Wood Product Having Intumescent Coating.” US Patent US20100223878 A1
25. Camino, G, Costa, L, Martinasso, G, “Intumescent Fire-Retardant Systems.” Polym. Degrad. Stab., 23 (4) 359–376 (1989)10.1016/0141-3910(89)90058-X ↗
26. Camino, G, Costa, L, “Mechanism of Intumescence in Fire Retardant Polymers.” Rev. Inorg. Chem., 8 (1–2) 69–100 (1986)10.1515/REVIC.1986.8.1-2.69 ↗
27. Camino, G, “Flame Retardants: Intumescent Systems.” In: Pritchard, G (ed.) Plastics Additives, pp. 297–306. Springer, Dordrecht (1998)10.1007/978-94-011-5862-6_33 ↗
28. Camino, G, Costa, L, Trossarelli, L, “Study of the Mechanism of Intumescence in Fire Retardant Polymers: Part V—Mechanism of Formation of Gaseous Products in the Thermal Degradation of Ammonium Polyphosphate.” Polym. Degrad. Stab., 12 (3) 203–211 (1985)10.1016/0141-3910(85)90089-8 ↗
29. Camino, G, Costa, L, Trossarelli, L, Costanzi, F, Landoni, G, “Study of the Mechanism of Intumescence in Fire Retardant Polymers: Part IV—Evidence of Ester Formation in Ammonium Polyphosphate-Pentaerythritol Mixtures.” Polym. Degrad. Stab., 8 (1) 13–22 (1984)10.1016/0141-3910(84)90068-5 ↗
30. Horacek, H, “Reactions of Stoichiometric Intumescent Paints.” J. Appl. Polym. Sci., 113 (3) 1745–1756 (2009)10.1002/app.29940 ↗
31. Cao, K, Wu, S-L, Wang, K-L, Yao, Z, “Kinetic Study on Surface Modification of Ammonium Polyphosphate with Melamine.” Ind. Eng. Chem. Res., 50 (14) 8402–8406 (2011)10.1021/ie2007938 ↗
32. Wu, K, Wang, Z, Liang, H, “Microencapsulation of Ammonium Polyphosphate: Preparation, Characterization, and its Flame Retardance in Polypropylene.” Polym. Comp., 29 (8) 854–860 (2008)10.1002/pc.20459 ↗
33. Wu, K, Wang, Z, “Intumescent Flame Retardation of EVA Using Microencapsulated Ammonium Polyphosphate and Pentaerythritols.” Polym. Plast. Technol. Eng., 47 (3) 247–254 (2008)10.1080/03602550701866733 ↗
34. Tang, Q, Wang, B, Shi, Y, Song, L, Hu, Y, “Microencapsulated Ammonium Polyphosphate with Glycidyl Methacrylate Shell: Application to Flame Retardant Epoxy Resin.” Ind. Eng. Chem. Res., 52 (16) 5640–5647 (2013)10.1021/ie302591r ↗
35. Wu, K, Wang, Z, Hu, Y, “Microencapsulated Ammonium Polyphosphate with Urea–Melamine–Formaldehyde Shell: Preparation, Characterization, and its Flame Retardance in Polypropylene.” Polym. Adv. Technol., 19 (8) 1118–1125 (2008)10.1002/pat.1095 ↗
36. Chen, X, Jiao, C, Zhang, J, “Microencapsulation of Ammonium Polyphosphate with Hydroxyl Silicone Oil and Its Flame Retardance in Thermoplastic Polyurethane.” J. Therm. Anal. Calorim., 104 (3) 1037–1043 (2011)10.1007/s10973-011-1347-6 ↗
37. Wu, K, Song, L, Wang, Z, Hu, Y, “Microencapsulation of Ammonium Polyphosphate with PVA–Melamine–Formaldehyde Resin and Its Flame Retardance in Polypropylene.” Polym. Adv. Technol., 19 (12) 1914–1921 (2008)10.1002/pat.1231 ↗
38. Lei, Z, Cao, Y, Xie, F, Ren, H, “Study on Surface Modification and Flame Retardants Properties of Ammonium Polyphosphate for Polypropylene.” J. Appl. Polym. Sci., 124 (1) 781–788 (2012)10.1002/app.35064 ↗
39. Ni, J, Song, L, Hu, Y, Zhang, P, Xing, W, “Preparation and Characterization of Microencapsulated Ammonium Polyphosphate with Polyurethane Shell by In Situ Polymerization and Its Flame Retardance in Polyurethane.” Polym. Adv. Technol., 20 (12) 999–1005 (2009)10.1002/pat.1354 ↗
40. Liu, L, Zhang, Y, Li, L, Wang, Z, “Microencapsulated Ammonium Polyphosphate with Epoxy Resin Shell: Preparation, Characterization, and Application in EP System.” Polym. Adv. Technol., 22 (12) 2403–2408 (2011)10.1002/pat.1776 ↗
41. Chen, M, Xu, Y, Chen, X, Ma, Y, He, W, Yu, J, Zhang, Z, “Thermal stability and combustion behavior of flame-retardant polypropylene with thermoplastic polyurethane-microencapsulated ammonium polyphosphate.” High Performance Polymers (2014)10.1177/0954008313517910 ↗
42. Wang, B, Tang, Q, Hong, N, Song, L, Wang, L, Shi, Y, Hu, Y, “Effect of Cellulose Acetate Butyrate Microencapsulated Ammonium Polyphosphate on the Flame Retardancy, Mechanical, Electrical, and Thermal Properties of Intumescent Flame-Retardant Ethylene-Vinyl Acetate Copolymer/Microencapsulated Ammonium Polyphosphate/Polyamide-6 Blends.” ACS Appl. Mater. Interf., 3 (9) 3754–3761 (2011)10.1021/am200940z ↗
43. Qu, H, Wu, W, Hao, J, Wang, C, Xu, J, “Inorganic-Organic Hybrid Coating-Encapsulated Ammonium Polyphosphate and Its Flame Retardancy and Water Resistance in Epoxy Resin.” Fire Mater., 38 (3) 312–322 (2014)10.1002/fam.2182 ↗
44. Qu, H, Hao, J, Wu, W, Zhao, X, Jiang, S, “Optimization of Sol–Gel Coatings on the Surface of Ammonium Polyphosphate and its Application in Epoxy Resin.” J. Fire Sci., 30 (4) 357–371 (2012)10.1177/0734904112442360 ↗
45. Shao, ZB, Deng, C, Tan, YL, Chen, MJ, Chen, L, Wang, YZ, “Ammonium Polyphosphate Chemically Modified with Ethanolamine as an Efficient Intumescent Flame Retardant for Polypropylene.” J. Mater. Chem. A, 2 (34) 13955–13965 (2014)10.1039/C4TA02778G ↗
46. Shao, Z-B, Deng, C, Tan, Y, Chen, M-J, Chen, L, Wang, Y-Z, “Flame Retardation of Polypropylene via a Novel Intumescent Flame Retardant: Ethylenediamine-Modified Ammonium Polyphosphate.” Polym. Degrad. Stab., 106 88–96 (2014)10.1016/j.polymdegradstab.2013.10.005 ↗
47. Zheng, Z, Qiang, L, Yang, T, Wang, B, Cui, X, Wang, H, “Preparation of Microencapsulated Ammonium Polyphosphate with Carbon Source- and Blowing Agent-Containing Shell and Its Flame Retardance in Polypropylene.” J. Polym. Res., 21 (5) 1–15 (2014)10.1007/s10965-014-0443-2 ↗
48. Wang, G, Wang, Y, Yang, J, “Influences of Polymerization Degree of Ammonium Polyphosphate on Fire Protection of Waterborne Intumescent Fire Resistive Coating.” Surf. Coat. Technol., 206 (8–9) 2275–2280 (2012)10.1016/j.surfcoat.2011.10.003 ↗
49. Zav’yalov, DE, Zybina, OA, Mitrofanov, VV, Mnatsakanov, SS, “Comparative Study of the Behavior of Ammonium Phosphate in Fireproofing Intumescent Formulations.” Russ. J. Appl. Chem., 85 (1) 150–152 (2012)10.1134/S1070427212010296 ↗
50. Hill, JE, “Intumescent Coating and Method of Manufacture.” US Patent US5225464 A
51. Giraud, S, Bourbigot, S, Rochery, M, Vroman, I, Tighzert, L, Delobel, R, Poutch, F, “Flame Retarded Polyurea with Microencapsulated Ammonium Phosphate for Textile Coating.” Polym. Degrad. Stab., 88 (1) 106–113 (2005)10.1016/j.polymdegradstab.2004.01.028 ↗
52. Vroman, I, Giraud, S, Salaün, F, Bourbigot, S, “Polypropylene Fabrics Padded with Microencapsulated Ammonium Phosphate: Effect of the Shell Structure on the Thermal Stability and Fire Performance.” Polym. Degrad. Stab., 95 (9) 1716–1720 (2010)10.1016/j.polymdegradstab.2010.05.019 ↗
53. Weil, E, McSwigan, B, “Melamine Phosphates and Pyrophosphates in Flame Retardant Coatings: Old Products with New Potential.” J. Coat. Technol., 66 (839) 75–82 (1994)
54. Weil, ED, Choudhary, V, “Flame-Retarding Plastics and Elastomers with Melamine.” J. Fire Sci., 13 (2) 104–126 (1995)10.1177/073490419501300202 ↗
55. Kay, M, Price, AF, “Fire Test Behaviour of Various Crystal Types of Melamine Phosphate in Intumescent Formulations.” Fire Mater., 6 (3–4) 119–121 (1982)10.1002/fam.810060304 ↗
56. Fudang, S, Zhiming, D, Xiaomin, C, Linshuang, Z, Ye, Y, Linming, LI, “Experimental Study on Fires Extinguishing Properties of Melamine Phosphate Powders.” Proc. Eng., 84 535–542 (2014)10.1016/j.proeng.2014.10.465 ↗
57. Pirig, WD, Rothkamp, S, Thewes, V, “Intumescent Coating Stable Under Tropical Conditions.” US Patent US6054513 A
58. Wang, G, Yang, J, “Thermal Degradation Study of Fire Resistive Coating Containing Melamine Polyphosphate and Dipentaerythritol.” Prog. Org. Coat., 72 (4) 605–611 (2011)10.1016/j.porgcoat.2011.07.001 ↗
59. Ward, DA, “Fire Protection & Retardant Coatings.” European Patent EP2093263 B1
60. Chyall, LJ, Hodgen, HA, Vyverberg, FJ, Chapman, RW, “Intumescent Polymer Compositions.” US Patent US6905693 B2
61. Balabanovich, AI, “Thermal Decomposition Study of Intumescent Additives: Pentaerythritol Phosphate and Its Blend with Melamine Phosphate.” Thermochim. Acta, 435 (2) 188–196 (2005)10.1016/j.tca.2005.05.019 ↗
62. Zhou, S, Song, L, Wang, Z, Hu, Y, Xing, W, “Flame Retardation and Char Formation Mechanism of Intumescent Flame Retarded Polypropylene Composites Containing Melamine Phosphate and Pentaerythritol Phosphate.” Polym. Degrad. Stab., 93 (10) 1799–1806 (2008)10.1016/j.polymdegradstab.2008.07.012 ↗
63. Huggard, MT, White, PS, “An Alkyl Diamine Phosphate.” US Patent US5137937 A
64. Rhodes, MS, Izrailev, L, Tuerack, J and Rhodes, PS, “Enhancing the Flame Retardancy of Nitrogenous Phosphorus and/or Sulfonate Flame Retardants, Activated with a Char Forming Catalyst and/or a Phase Transfer Catalyst.” US Patent US6733697 B2
65. Sergei, VL, Edward, DW, “Recent Progress in Flame Retardancy of Polyurethane and Polyisocyanurate Foams.” Fire. Polym. IV, pp. 280–290. American Chemical Society, (2005)10.1021/bk-2006-0922.ch022 ↗
66. Green, J, “A Review of Phosphorus-Containing Flame Retardants.” Journal of Fire Sciences, 10 (6) 470–487 (1992)10.1177/073490419201000602 ↗
67. Weil, ED, Phosphorus-Based Flame Retardants. Flame-Retardant Polymeric Materials. Springer, New York, 1978
68. Nugent, RM, Ward, TA, Greigger, PP and Seiner, JA, “Flexible intumescent coating composition.” US Patent US5108832 A
69. Aslin, CD, “Composition with Integral Intumescence Properties.” US Patent US5387655 A
70. Telschow, JE, “Pentaerythritol Phosphate Alcohol-Containing Phosphonate and Phosphite Compounds.” US Patent US5536862 A
71. Göbelbecker, SD, Nägerl, HDD, Danker, GJ, Kirk, D, “Intumescent Composition of the Two-Components-Type.” European Patent EP0614944 A2
72. Ma, H, Fang, Z, “Synthesis and Carbonization Chemistry of a Phosphorous–Nitrogen Based Intumescent Flame Retardant.” Thermochim. Acta, 543 130–136 (2012)10.1016/j.tca.2012.05.021 ↗
73. Andersson, A, Lundmark, S, Maurer, FHJ, “Evaluation and Characterization of Ammoniumpolyphosphate–Pentaerythritol-Based Systems for Intumescent Coatings.” J. Appl. Polym. Sci., 104 (2) 748–753 (2007)10.1002/app.25588 ↗
74. Jenewein, EDI, Pirig, WD, “Flame-Retardant Coating Composition.” European Patent EP0735119 B1
75. Knox, CL, Damle, SB, “Intumescent Flame Retardant Composition.” US Patent US5227416
76. Adrian, H”, Per-Erik, V, “Intumescent Coating and Use Thereof.” WO2006096112 A1
77. Gestner, RE, Harshbarger, DM, “Low Density Fire Barrier Material and Method of Making” US 6153668 A
78. Réti, C, Casetta, M, Duquesne, S, Bourbigot, S, Delobel, R, “Flammability Properties of Intumescent PLA Including Starch and Lignin.” Polym. Adv. Technol., 19 (6) 628–635 (2008)10.1002/pat.1130 ↗
79. Alongi, J, Pošković, M, Frache, A, Trotta, F, “Novel Flame Retardants Containing Cyclodextrin Nanosponges and Phosphorus Compounds to Enhance EVA Combustion Properties.” Polym. Degrad. Stab., 95 (10) 2093–2100 (2010)10.1016/j.polymdegradstab.2010.06.030 ↗
80. Liu, Y, Yi, J, Cai, X, “The Investigation of Intumescent Flame-Retarded Polypropylene Using Poly(hexamethylene terephthalamide) as Carbonization Agent.” J. Therm. Anal. Calorim., 107 (3) 1191–1197 (2012)10.1007/s10973-011-1874-1 ↗
81. Feng, J, Zhang, X, Ma, S, Xiong, Z, Zhang, C, Jiang, Y, Zhu, J, “Syntheses of Metallic Cyclodextrins and Their Use as Synergists in a Poly(Vinyl Alcohol)/Intumescent Flame Retardant System.” Ind. Eng. Chem. Res., 52 (8) 2784–2792 (2013)10.1021/ie303652f ↗
82. Huang, J, Zhang, Y, Yang, Q, Liao, X, Li, G, “Synthesis and Characterization of a Novel Charring Agent and Its Application in Intumescent Flame Retardant polypropylene System.” J. Appl. Polym. Sci., 123 (3) 1636–1644 (2012)10.1002/app.34578 ↗
83. Zhang, R, Xiao, X, Tai, Q, Huang, H, Hu, Y, “Modification of Lignin and Its Application as Char Agent in Intumescent Flame-Retardant Poly(lactic acid).” Polym. Eng. Sci., 52 (12) 2620–2626 (2012)10.1002/pen.23214 ↗
84. Taylor, AP, Sale, FR, “Thermoanalytical Studies of Intumescent Systems.” Makromol. Chem. Macromol. Symp., 74 (1) 85–93 (1993)10.1002/masy.19930740110 ↗
85. Costa, L, Camino, G, “Thermal Behaviour of Melamine.” J. Ther. Anal., 34 (2) 423–429 (1988)10.1007/BF01913181 ↗
86. Wirnhier, E, Mesch, MB, Senker, J, Schnick, W, “Formation and Characterization of Melam, Melam Hydrate, and a Melam-Melem Adduct.” Chemistry, 19 (6) 2041–2049 (2013)10.1002/chem.201203340 ↗
87. Thewes, V, Pirig, WD, “Flame-Retardant Coating “US Patent US 6251961 B1
88. Camino, G, Costa, L, Trossarelli, L, “Study of the Mechanism of Intumescence in Fire Retardant Polymers: Part III—Effect of Urea on the Ammonium Polyphosphate-Pentaerythritol System.” Polym. Degrad. Stab., 7 (4) 221–229 (1984)10.1016/0141-3910(84)90098-3 ↗
89. Wang, J-S, Liu, Y, Zhao, H-B, Liu, J, Wang, D-Y, Song, Y-P, Wang, Y-Z, “Metal Compound-Enhanced Flame Retardancy of Intumescent Epoxy Resins Containing Ammonium Polyphosphate.” Polym. Degrad. Stab., 94 (4) 625–631 (2009)10.1016/j.polymdegradstab.2009.01.006 ↗
90. Zhang, P, Song, L, Lu, H, Wang, J, Hu, Y, “The Thermal Property and Flame Retardant Mechanism of Intumescent Flame Retardant Paraffin System with Metal.” Ind. Eng. Chem. Res., 49 (13) 6003–6009 (2010)10.1021/ie1001422 ↗
91. Labuschagné, FJWJ, Focke, WW, “Metal Catalysed Intumescence: Characterisation of the Thermal Decomposition of Calcium Gluconate Monohydrate.” J. Mater. Sci., 38 (6) 1249–1254 (2003)10.1023/A:1022818022650 ↗
92. Qiao, ZH, Yang, W, Song, L, Hu, Y, Kong, FQ, Li, J, Yan, HZ, Huang, W, “Synergistic Effects of Cerium(IV) Phosphate with Intumescent Flame Retardant in Styrene Butadiene Rubber.” Plast. Rubb. Comp., 40 (8) 413–419 (2011)10.1179/1743289810Y.0000000040 ↗
93. Li, Y, Li, B, Dai, J, Jia, H, Gao, S, “Synergistic Effects of Lanthanum Oxide on a Novel Intumescent Flame Retardant Polypropylene System.” Polym. Degrad. Stab., 93 (1) 9–16 (2008)10.1016/j.polymdegradstab.2007.11.002 ↗
94. Sheng, Y, Chen, Y, Bai, Y, “Catalytically Synergistic Effects of Novel LaMnO3 Composite Metal Oxide in Intumescent Flame-Retardant Polypropylene System.” Polym. Comp., 35 (12) 2390–2400 (2014)10.1002/pc.22908 ↗
95. Cao, K, Wu, S-L, Qiu, S-L, Li, Y, Yao, Z, “Synthesis of N-Alkoxy Hindered Amine Containing Silane as a Multifunctional Flame Retardant Synergist and Its Application in Intumescent Flame Retardant Polypropylene.” Ind. Eng. Chem. Res., 52 (1) 309–317 (2012)
96. Wang, L, Hu, Y, Song, L, Yuen, RKK, “Investigation of Thermal and Combustion Properties for Intumescent Flame-Retardant Ethylene-Viny Acetate Composites Containing Ferrous Disulfide.” Ind. Eng. Chem. Res., 51 (46) 15082–15088 (2012)10.1021/ie301713e ↗
97. Su, X, Yi, Y, Tao, J, Qi, H, “Synergistic Effect of Zinc Hydroxystannate with Intumescent Flame-Retardants on Fire Retardancy and Thermal Behavior of Polypropylene.” Polym. Degrad. Stab., 97 (11) 2128–2135 (2012)10.1016/j.polymdegradstab.2012.08.017 ↗
98. Wu, N, Ding, C, Yang, R, “Effects of Zinc and Nickel Salts in Intumescent Flame-Retardant Polypropylene.” Polym. Degrad. Stab., 95 (12) 2589–2595 (2010)10.1016/j.polymdegradstab.2010.07.035 ↗
99. Song, R, Zhang, B, Huang, B, Tang, T, “Synergistic Effect of Supported Nickel Catalyst with Intumescent Flame-Retardants on Flame Retardancy and Thermal Stability of Polypropylene.” J. Appl. Polym. Sci., 102 (6) 5988–5993 (2006)10.1002/app.25178 ↗
100. Bourbigot, S, Le Bras, M, Delobel, R, Tremillon, J-M, “Synergistic Effect of Zeolite in an Intumescence Process. Study of the Interactions Between the Polymer and the Additives.” J. Chem. Soc. Faraday Trans., 92 (18) 3435–3444 (1996)10.1039/FT9969203435 ↗