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Cover Image, Volume 131, Issue 18
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.40978
Subject(s) - fire retardant , cover (algebra) , materials science , thermoplastic , flexural strength , pallet , composite material , polymer , ultimate tensile strength , thermal stability , volume (thermodynamics) , polymer science , computer science , mechanical engineering , chemical engineering , engineering , physics , quantum mechanics
Thermoplastic polyurethanes are useful commercial polymers, with applications in both industry and daily life because of their high tensile and flexural fatigue strength, excellent low‐temperature flexibility, and outstanding abrasion resistance. However, due to their poor flame retardancy, thermal stability, and melt dripping behavior, they need improvement to meet industrial safety standards. In this study, Qiheng Tang, Yun Song, Jiyu He, and Rongjie Yang prepare a series of flame‐retardant and anti‐dripping thermoplastic poly(imide‐urethane)s (TPIUs) by incorporating pyromellitic dianhydride as a flame retardant in the main chains using a two‐step polymerization process. The results show that TPIUs exhibit excellent thermal and mechanical stabilities and flame‐retardant properties. The cover shows the anti‐dripping effect of TPIUs during the UL‐94 vertical burning test. DOI: 10.1002/app.40801