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Studying Crosslinker Chemical Structure Effect on the Tuning Properties of HTPB‐Based Polyurethane
Author(s) -
Yarmohammadi Masoud,
Komeili Saied,
Shahidzadeh Mansour
Publication year - 2018
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201700180
Subject(s) - triethanolamine , polybutadiene , polyurethane , materials science , boron trifluoride , boron , polymer chemistry , trimethylolpropane , hydroxyl terminated polybutadiene , swelling , chemical engineering , chemistry , organic chemistry , composite material , copolymer , polymer , catalysis , analytical chemistry (journal) , engineering
Hydroxyl terminated polybutadiene based polyurethanes with various crosslinker compounds have been prepared to investigate the effect of crosslinker content and structure on polyurethanes mechanical properties. Three various crosslinkers have been used in this study, including trimethylolpropane, triethanolamine, and boron trifluoride triethanolamine complex. The results established that increasing crosslinker content increased the polyurethane strength. Moreover, boron trifluoride triethanolamine complex showed better ability in making network polyurethanes. The tensile test revealed that using boron trifluoride triethanolamine complex as crosslinker led to increasing chemical crosslinking bonds in comparison to two other crosslinkers via catalyzing side reaction like chain coupling. Swelling test and dynamical‐mechanical analysis confirmed this result, too.