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Citation: Jiang Jiaqi, Wang Lanqin. RHEOLOGICAL PROPERTY OF LIQUID HYDROXY-TERMINATED POLYBUTADIENE[J]. Chinese Journal of Applied Chemistry, ;1986, 3(4): 22-25. shu

RHEOLOGICAL PROPERTY OF LIQUID HYDROXY-TERMINATED POLYBUTADIENE

Jiang Jiaqi ,
Wang Lanqin

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 24 May 1985
Available Online: 31 October 1985

The rheological property of liquid hydroxy-terminated polybutadiene (HTPB) was studied as a function of shear rate,temperature and its molecular weight. Measurements were made in the temperature from 15 to 70℃ and shear rate range from 0 to 2279 s.^-1. The flow behavior of HTPB is found to be essentially Newtonian. When bulk viscosity is below 1 Pa. sec. and shear rate below 650 s^-1., but it is also a non-Newtonian under other conditions.The results concerning the relationship between bulk viscosity and temperature are following the empirical equation:logη_a=A+B/T, when the molecular weight of HTPB is 1,000-5,600.The relation between bulk viscosity and number average molecular weight was established as η_a=2.09×10^-8M_n^2·52 and η_a=1.14×10^-8M_n^2·55 at 20 and 25℃, respectively.
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