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http://dx.doi.org/10.7317/pk.2014.38.4.417

Rheology and Curing of Hydroxyl Terminated Polybutadiene/(Sugar or Calcium Carbonate) Suspension  

Lee, Sangmook (Division of Chemical Engineering, Dankook University)
Hong, In-Kwon (Division of Chemical Engineering, Dankook University)
Lee, Jae Wook (Applied Rheology Center, Department of Chemical and Biomolecular Engineering, Sogang University)
Jeong, Won Bok (Hanwha Corporation R&D Center, Hanwha Corporation)
Publication Information
Polymer(Korea) / v.38, no.4, 2014 , pp. 417-424 More about this Journal
Abstract
Reactivity and rheological behavior of highly concentrated polymer bonded explosives (PBX) simulant was studied. As a binder, thermosetting hydroxyl terminated polybutadiene (HTPB) was used. By using bimodal $CaCO_3$ (size ratio 10:1) and sugar particles (size ratio 25:1) as fillers, maximum 75 v% filling was possible during melt mixing. The relative viscosities of bimodal suspension were much lower than those of unimodal one and showed minimum values at 0.25 of fine particle fraction. In curing experiment, as curing temperature increased, the time of initiation and completeness of curing reaction became shortened, the torque kept low, and the change of internal temperature decreased.
Keywords
highly concentrated suspension; polymer bonded explosive; simulant; hydroxyl terminated polybutadiene;
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