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To study the crosslink network structure and the correlation with tensile mechanical properties of hydroxyl-terminated polybutadiene (HTPB) binder, tensile test and nuclear magnetic resonance test were introduced, the crosslink data and tensile stress-strain curves were obtained at various temperatures. The results show that the temperature has a significant effect on the crosslink density. When heating the samples from 30 o C to 90 o C, the crosslink density decreases and the transversedoi:10.1088/1757-899x/493/1/012091 fatcat:z4ucrwvt5fbfxnpdmrywqdf7yq